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Technical Report EL-98-6 
June 1998 


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US Army Corps 
of Engineers 

Waterways Experiment 
Station 


Refinement of a Comprehensive Watershed 
Water Quality Model with Application 
to the Chesapeake Bay Watershed 

by Anthony S. Donigian, Jr., Brian R. Bicknell, Radha V. Chinnaswamy, 
Aqua Terra Consultants 

Patrick N. Deliman, WES 



Approved For Public Release; Distribution Is Unlimited 


19980707 238 

me quality INSPECTED l 


Prepared for U.S. Environmental Protection Agency 






The contents of this report are not to be used for advertising, 
publication, or promotional purposes. Citation of trade names 
does not constitute an official endorsement or approval of the use 
of such commercial products. 

The findings of this report are not to be construed as an 
official Department of the Army position, unless so desig¬ 
nated by other authorized documents. 


PRINTED ON RECYCLED PAPER 



Technical Report EL-98-6 
June 1998 


Refinement of a Comprehensive Watershed 
Water Quality Model with Application 
to the Chesapeake Bay Watershed 

by Anthony S. Donigian, Jr., Brian R. Bicknell, Radha V. Chinnaswamy 

Aqua Terra Consultants 

2672 Bayshore Parkway, Suite 1001 

Mountain View, CA 94043-1001 


Patrick N. Oeliman 

U.S. Army Corps of Engineers 
Waterways Experiment Station 
3909 Halls Ferry Road 
Vicksburg, MS 39180-6199 


Final report 

Approved for public release; distribution is unlimited 


Prepared for Chesapeake Bay Program Office 

U.S. Environmental Protection Agency 
Annapolis, MD 21403 



Waterways Experiment Station Cataloging-in-Publication Data 

Refinement of a comprehensive watershed water quality model with application to the 
Chesapeake Bay Watershed / by Anthony S. Donigian, Jr.... [et al.]; prepared for 
Chesapeake Bay Program Office, U.S. Environmental Protection Agency. 

244 p.: ill.; 28 cm. -- (Technical report; EL-98-6) 

Includes bibliographic references. 

1. Water quality -- Mathematical models. 2. Environmental quality -- Mathematical 
models. 3. Valley ecology -- Mathematical models. 4. Stream ecology -- Mathematical 
models. 4. Chesapeake Bay (Md. and Va.) - Mathematical models. I. Donigian, Anthony 
S. II. United States. Army. Corps of Engineers. III. U.S. Army Engineer Waterways 
Experiment Station. IV. Environmental Laboratory (U.S. Army Engineer Waterways 
Experiment Station) V. United States. Environmental Protection Agency. Chesapeake Bay 
Program. VI. Series: Technical report (U.S. Army Engineer Waterways Experiment Station) 

; EL-98-6. 

TA7 W34 no.EL-98-6 

















Contents 


Preface . vi 

Conversion Factors, Non-SI to SI Units of Measurement.viii 

1— Introduction . 1 

Study Background. 1 

Scope and Objectives. 1 

Conclusions and Recommendations. 5 

Format of this Report. 9 

2— Refinement of the AGCHEM Plant Uptake Function. 10 

Overview of AGCHEM and Plant Uptake Issue . 10 

Review of Available Plant Uptake Functions . 10 

NLEAP Selection . 13 

NLEAP Model Plant Uptake Functions. 14 

Adaptation of NLEAP for HSPF/AGCHEM. 15 

New Yield-Based Plant Uptake Option in AGCHEM. 16 

New AGCHEM Module Input Parameters. 18 

3— Testing the New Yield-Based AGCHEM Plant Uptake Routine. 21 

Introduction. 21 

Atmospheric Deposition and SPECIAL ACTIONS Enhancements. 21 

AGCHEM Testing Results . 22 

Conclusions and Recommendations. 34 

4 — Testing and Calibration of the Refined Watershed Model. 37 

Model Testing Procedures. 37 

Nonpoint Source and Loading Assessment . 38 

Water Quality Calibration Results. 43 

5— Representation of Nutrient Reduction Alternatives - A Demonstration _56 

Alternative Scenarios. 56 

Results of Alternative Simulations. 57 

Conclusions and Issues for Nutrient Reduction. 62 

References . 63 

































Appendix A: Shenandoah Model Segments Results .A1 

Appendix B: West Branch Susquehanna Model Segments Results .B1 

Appendix C: Monocacy Model Segments Results. Cl 

Appendix D: Alternative Nutrient Reduction Scenario Results 

for the Shenandoah Model Segments. D1 

SF 298 

List of Figures 


Figure 1. Chesapeake Bay Watershed Model and Testing Segments.3 

Figure 2. PERLND Structure Chart. 11 

Figure 3. Nitrogen and Phosphorus Transformations in AGCHEM.12 

Figure 4. NLEAP fNU function for plant uptake. 15 

Figure 5. Comparison of First-Order and Yield-Based Plant 

Uptake Options for Conventional Tillage in the 
Shenandoah Model Segment . 31 

Figure 6. Simulated Plant N Uptake and Deficits for Conventional 

Tillage in the Shenandoah Model Segment, 1984-91 .32 

Figure 7. Simulated and Observed N0 3 -N for Shenandoah River 

(Segment 200) at Millville, WV. 47 

Figure 8. Simulated and Observed NH 3 -N for Shenandoah River 

(Segment 200) at Millville, WV. 48 

Figure 9. Simulated and Observed P0 4 -P for Shenandoah River 

(Segment 200) at Millville, WV. 49 

Figure 10. Simulated and Observed Total N for Shenandoah River 

(Segment 200) at Millville, WV. 50 

Figure 11. Simulated and Observed Total P for Shenandoah River 

(Segment 200) at Millville, WV. 51 

Figure 12. Simulated and Observed Total N for West Branch 

Susquehanna River (Segment 70) at Lewisburg, PA . 52 

Figure 13. Simulated and Observed Total P for West Branch 

Susquehanna River (Segment 70) at Lewisburg, PA . 53 

Figure 14. Simulated and Observed Total N for Monocacy River 

(Segment 750) at Bridgeport MD. 54 

Figure 15. Simulated and Observed Total P for Monocacy River 

(Segment 750) at Bridgeport, MD . 55 






















List of Tables 


Table 1. New Nitrogen Parameter Tables Needed for Yield-Based 

Plant Uptake. 19 

Table 2. AGCHEM Model Results for First-Order and Yield-Based 
Plant Uptake Options for Cropland in Upper Shenandoah 
Model Segment 190,1984-87 . 24 

Table 3. AGCHEM Summary Results for Conventional Tillage 

in the Shenandoah Model Segment 192 .25 

Table 4. AGCHEM Summary Results for Conservation T illa ge 

in the Shenandoah Model Segment 193 .27 

Table 5. AGCHEM Summary Results for Hay Cropland in the 

Shenandoah Model Segment 196 . 29 

Table 6 . Impacts of Changes in Application Rates for Conventional 
Tillage in the Upper Shenandoah Model Segment 190, 

1984-87 . 33 

Table 7. Impacts of Changes in Nutrient Target Rates for 
Conventional Tillage in the Upper Shenandoah 
Model Segment 190,1984-87 . 36 

Table 8 . Unit Area Nonpoint Source Loading Rates for Each 

Land Use for the Test Model Segments. 39 

Table 9. Percent of Total Load Contributed from Each Source 

for the Test Model Segments. 41 

Table 10. Impacts of Alternatives for Conservation Tillage in the 

Upper Shenandoah Model Segment 190,1984-87 .58 

Table 11. Impacts of Alternatives for Hay Cropland in the Upper 

Shenandoah Model Segment 190,1984-87 . 59 

Table 12. Nutrient Loadings Comparison for Base Conditions and 
Two Alternatives for the Shenandoah River 
at Millville, WV . 60 
















Preface 


The work herein was authorized under U.S. Army Engineer Waterways 
Experiment Station (WES) Contract No. DACW39-94-C-0052 with Aqua Terra 
Consultants, dated March 30,1994, and was completed on May 31,1995. 

Dr. Patrick N. Deliman, Environmental Laboratory (EL), WES, was the 
Project Officer and co-author of this report He was instrumental in facilitating 
the adminis tration and execution of the contract work. 

The Refinement of a Comprehensive Watershed Water Quality Model with 
Application to the Chesapeake Bay Watershed study, as documented in this 
report, was performed for the U.S. Environmental Protection Agency Chesapeake 
Bay Program Office (CBPO), Annapolis, MD. Mr. Lewis Linker, CBPO, was 
point of contact The CBPO provided data for the test model segments within the 
Chesapeake Bay Watershed Model that were critical to the successful completion 
of this study. Mr. Linker and his staff at the CBPO are acknowledged for their 
assistance and cooperation. 

Mr. Anthony S. Donigian, Jr., Aqua Terra, was the Principal Investigator and 
Project Manager, responsible for the overall technical direction of the work and 
preparation of the final report Mr. Avinash Patwardhan, Aqua Terra, reviewed 
the available plant uptake functions and assisted Mr. Donigian in designing the 
new yield-based algorithms. Coding changes were designed by Mr. Brian R. 
Bicknell and implemented and tested by Mr. Thomas Jobes. Both were from 
Aqua Terra and performed data development for the extended simulation period 
of this study. Mr. Radha V. Chinnaswamy, also from Aqua Terra, performed 
model testing and calibration for all test subbasins under the direction of 
Messrs. Donigian and Mr. Bicknell. Messrs. Bicknell and Chinnaswamy were 
also authors of this report 

At the time of publication of this report. Director of WES was Dr. Robert W. 
Whalin, and EL Director was Dr. John Harrison. Dr. Richard E. Price was Chief, 
Environmental and Effects Division, EL. WES Commander was COL Robin R. 
Cababa, EN. 



This report should be cited as follows: 


Donigian, A. S., Jr., Bicknell, B. R., Chinnaswamy, R. V., and 
Deliman, P. N. (1998). “Refinement of a comprehensive 
watershed water quality model with application to the 
Chesapeake Bay watershed,” Technical Report EL-98-6, 

U.S. Army Engineer Waterways Experiment Station, 
Vicksburg, MS. 


The contents of this report are not to be used for advertising, publication, or 
promotional purposes. Citation of trade names does not constitute an official 
endorsement or approval of the use of such commercial products. 



Conversion Factors, Non-SI to 
SI Units of Measurement 


Non-SI units of measurement used in this report can be converted to SI units 
as follows: 


I Multiply 

By 

To Obtain 

1 acres 

2.471 

hectares 

cubic feet 

0.02831685 

cubic meters 

Fahrenheit deqrees 

5/9 

Celsius degrees 1 

feet 

0.3048 

meters 

inches 

2.54 

centimeters 

pounds 

0.4535924 


square miles 

2.590 

square kilometers I 

1 To obtain Celsius (C) tempers 
(5/9) (F-32). 

iture from Fahrenheit (F) readings, use the following formula: C = 



































1 Introduction 


Study Background 

In 1987 the Chesapeake Bay Agreement was signed by the EPA Administrator and 
governors of the member states recommending a 40% reduction in nutrient loadings to 
the Chesapeake Bay to restore and maintain the water quality and living resources of 
the Bay. The Chesapeake Bay Watershed Model, based on the U.S. EPA Hydrologic 
Simulation Program-Fortran (HSPF) (Bicknell et al. 1993) was used to provide a 
framework for quantifying and evaluating the needed nutrient loading reductions to the 
Chesapeake Bay, and to allow the Chesapeake Bay Program Office (CBPO) to 
evaluate the impacts of land use changes and alternate nutrient and agricultural 
management practices. The Watershed Model provides total pollutant loadings from 
all land areas tributary to the Bay in order to drive a fully dynamic three-dimensional, 
hydrodynamic/water, quality model of Chesapeake Bay. 

Recent refinements and re-calibration of the Watershed Model produced a report 
(Donigian et al. 1994) describing the CBP Phase D Watershed Model application to 
the Bay drainage for calculating nutrient loadings to the Bay. That work included 
updating the model database for the 1984-87 period, incorporating detailed 
agricultural process simulation using the AGCHEM modules of HSPF, developing 
capabilities for instream sediment-nutrient interactions, and re-calibrating the 
improved model for the extended time period. The resulting Watershed Model 
produced a unique state-of-the-art watershed modeling capability that includes detailed 
soil process simulation for agricultural areas, linked to an instream water quality and 
nutrient model capable of representing comprehensive point and nonpoint pollutant 
loadings for the entire 68,000 square mile drainage area of the Chesapeake Bay. 


Scope and Objectives 

As a result of the CBP Phase n Watershed Model effort, additional improvements and 
refinements were identified and recommended to improve the overall utility of the 
Watershed Model as a planning tool for comprehensive watershed planning and 
assessment. The specific improvements recommended and tasks identified in this 
effort include the following developmental and application aspects: 

Model Development and Refinement: 

• Refine the AGCHEM simulation to better represent impacts of agricultural 
practices and nutrient management scenarios 

• Test the AGCHEM refinements and develop automated output options to 


Chapter 1 


Introduction 


1 




provide summary model results for calibration and application 

Model Testing and Application: 

• Apply the refined AGCHEM to selected subbasins of the Chesapeake Bay 
drainage with updated land use data, finer model segmentation, and an 
extended database 

• Re-calibrate the Watershed Model, with the refined AGCHEM, for the 
selected subbasins 


The specific objectives of this research effort associated with the above identified tasks 
were envisioned as follows: 

Model Development and Refinement 

Task 1: Refine the AGCHEM plant uptake simulation 

Previous reviews of the Watershed Model have recommended that the plant uptake 
algorithm and process should be further investigated to better represent the soil 
nutrient balances, and especially changes associated with management practices and 
nutrient reduction efforts. Subsequent research modeling efforts in both Maryland 
and Iowa have confirmed issues of plant uptake sensitivity to nutrient application rates 
and a need to re-calibrate uptake rates for nutrient reduction scenarios. In this task, 
the plant uptake function in AGCHEM was refined to include an additional option 
more indicative of crop requirements and yields, and more flexible for handling 
alternative cropping sequences, practices, and nutrient reduction alternatives. 


Task 2: Test the Refined AGCHEM and develop output summaries 

The refined AGCHEM module was tested on three selected model segments of the 
CBP Watershed Model for the agricultural land uses (i.e. conventional tillage, 
conservation tillage, hay land) that are represented by the AGCHEM procedures. 
Sensitivity analyses was performed both to thoroughly test the new coding and to 
develop parameter estimation guidance for the new algorithms. Automated procedures 
for outputting selected AGCHEM and Watershed Model results in a limited number of 
standard formats were developed to facilitate analysis of model output. 

Model Testing and Application 

Task 1: Apply the Refined AGCHEM with updated land use data, finer model 

segmentation, and an extended database 

We selected three subbasins within the Chesapeake Bay drainage to fully test the 
refined AGCHEM module integrated within the Watershed Model framework. Figure 
1 shows the CBP Phase III Watershed Model segmentation for the Above Fall Line 
(AFL) region, along with the locations of the three test subbasins. The three test 
subbasins included the Shenandoah River at Millville, WV; the Monocacy River at 
Jug Bridge, MD; and the West Branch Susquehanna River at Lewisburg, PA. The 


2 


Chapter 1 Introduction 





AFL Model Segments 



Figure 1. 


Chesapeake Bay Watershed Model and testing segments 





original Phase II model segmentation was reviewed in coordination with CBPO and 
revised as needed in order to provide finer spatial detail in regions of special interest. 
The revised segmentation required development of new hydraulic functions (i.e. 
FTABLEs in HSPF) to represent the hydraulic properties of the additional river 
reaches, modifications to the current HSPF input sequences, and investigation of 
additional rainfall segmentation for the new segments. 

In addition the following changes were performed to take advantage of more recent 
data and/or additional model capabilities implemented within the most recent version 
of HSPF (i.e. Version no. 11) planned for release in 1995: 

a. Update land use data using the 1990 EPA-EMAP database 

b. Extend database and simulation through 1991 

c. Implement and utilize enhanced capabilities for AGCHEM chemical 
applications (i.e. SPECIAL ACTIONS in HSPF) 

d. Implement direct atmospheric deposition of nutrients utilizing the enhanced 
capabilities of HSPF Version No. 11 

e. Activate existing benthal process simulation capabilities within the instream 
module to improve the oxygen and nutrient modeling results 


Updating land use information in the Watershed Model is a relatively straight-forward 
task as long as the land use categories are identical to the model categories and the 
updated information is adapted to the model segment boundaries. EPA provided the 
needed land use data for the three selected subbasins, and AQUA TERRA updated 
the input sequences to reflect the new data. 

Updating of the land use information, based on the EPA-EMAP data, and extending 
the simulation period and associated databases through 1991, were performed by the 
EPA CBPO staff with general review, guidance, and assistance by AQUA TERRA. 
The final Phase III land use data (Neumiller et al. 1994) for the test subbasins was 
then used in the AGCHEM testing and Watershed Model re-calibration for the test 
subbasins for the extended simulation period through 1991. The timeseries datasets 
that were extended include the entire set of meteorologic data (rainfall, evaporation, 
wind, air temperature, solar radiation, cloud cover, and dewpoint), point source files, 
atmospheric deposition, diversions, and observed flow and water quality. 


Task 2: Calibrate the Selected Watershed Model Subbasins with the Refined 

AGCHEM. 


Following the AGCHEM refinements to the model, and upon incorporating the 
updated land use, the finer segmentation, the extended database, and the other changes 
noted above, the Watershed Model was re-calibrated to the three selected subbasins. 
The flow, sediment, and water quality results were compared to observed data, and a 
variety of analyses were performed to assess NPS loading rates from all the land use 
categories, and determine load contributions from all sources. 


4 


Chapter 1 Introduction 





Conclusions and Recommendations 

Below we summarize the key conclusions and recommendations derived from each of 
the three main topics of this effort: AGCHEM refinement and testing, Watershed 
Model Calibration, and Nutrient Reduction Scenarios. 

AGCHEM Refinement and Testing 

The addition of a yield-based plant uptake option in the AGCHEM module of HSPF, 
derived from the NLEAP uptake formulation, provides an improved algorithm for 
representing the plant uptake component of nutrient balances for agricultural 
croplands. The new algorithm allows for direct consideration of expected plant yield 
levels for both N and P, seasonal distribution of uptake rates and multiple cropping 
periods, N fixation by leguminous plants, and stress conditions related to available 
nutrient levels and moisture conditions. Nutrient deficit state conditions are assessed 
and enhanced uptake is allowed when additional nutrients become available. 

Testing of the algorithm shows that it is sensitive to the available plant nutrients in the 
soil layers and to the target levels defined by the user corresponding to expected crop 
yields. The formulation is definitely less sensitive than the first-order option to 
nutrient application rates. Increasing application rates results in increased uptake but 
only up to the user-defined target levels; whereas, when application rates are 
decreased, the algorithm attempts to still meet the defined target levels, subject to the 
simulated stress conditions. Our testing has shown that decreased application rates 
will allow uptake levels to remain unchanged only if the plant available nutrients 
(from applications, atmospheric deposition, and mineralization) are sufficient to satisfy 
plant needs. This has important implications for agricultural BMPs that include 
nutrient reduction components. 

Although all components and capabilities of the new yield-based plant uptake option in 
AGCHEM have been tested for proper operation, further testing under site and crop 
specific conditions is highly recommended. The ’composite crop’ employed in the 
CBP Watershed Model, derived from parameters weighted by cropping distributions 
within each model segment, precluded detailed testing for individual crops and small- 
scale field conditions. Further testing at this level is recommended for evaluation of 
N fixation by leguminous crops, multiple cropping conditions, uptake timing and plant 
nutrient levels, and representation of stress conditions (i.e. nutrient and moisture). 

Small instrumented field sites, such as those in the Patuxent Basin (R. Summers, 
personal communication, 1994), the Nomini Creek/Owl Run sites in Virginia, the 
Conestoga basin in PA, and U.S.D.A. sites in Walnut Creek, IA should be considered 
for future testing and evaluation of the new yield-based algorithm. 


Watershed Model Calibration 

The refined Watershed Model resulting from this effort for the three test segments 
differs from the earlier Phase II Watershed Model in the following ways: 

a. Land use was updated by CBPO to 1990 conditions (Neumiller at al. 1994). 


Chapter 1 Introduction 


5 



b. Selected model segments were re-defined for finer spatial detail. 

c. Precipitation and meteorologic data was reviewed and extended through 1991. 

d. Point sources, diversion, and atmospheric deposition files were extended 
through 1991. 

e. The yield-based plant uptake function was used in AGCHEM. 

f. Enhanced SPECIAL ACTIONS capabilities were used to reduce the length of 
the model input and improve representation of chemical application practices. 

g. Atmospheric deposition was included as timeseries directly input to chemical 
storages for the AGCHEM segments, taking advantage of additional HSPF 
Version No. 1 capabilities. 

h. As part of the water quality calibration, benthic oxygen demand and benthic 
algae processes were activated within HSPF in order to improve the low DO 
and inorganic nutrient simulation. 

In this study, the nonpoint loading assessment involved two primary components. The 
first involved the evaluation and analysis of the AGCHEM results using the new 
yield-based plant uptake function. Uptake targets, nutrient application rates, and 
simulated plant uptake amounts for both N and P were reviewed and evaluated to 
ensure consistency and reasonability of the results. The second component involved a 
review and relative comparison of the nonpoint loading rates for all the land uses, and 
an assessment of the relative load contributions from all sources. The key outcome of 
the loading rate comparison was the identification of the relatively high loading rates 
of N0 3 from the forest segment. Therefore, we adjusted the forest segment 
parameters, primarily decreasing the subsurface N0 3 concentrations, to reduce the 
model generated forest loads to the general range of 1.0 to 2.0 lb/ac/yr, reported in 
the literature. 

Based on the results for all three model segments, the following conclusions and 
recommendations are provided: 

a. The overall results show a significant improvement from the Phase II effort 
with improved seasonal variation and tracking of the observed values. 
However, problems still remain for selected constituents, and further Tine 
tuning’ of the calibration is recommended along with more detailed 
investigations into the algal simulation. 

b. The addition of a benthal oxygen demand significantly improved the DO 
simulation during low flow periods that were typically over estimated in the 
Phase II results. This was an early indicator of the potential importance of the 
benthal processes on the overall water quality simulation. 

c. The N0 3 simulations for the Shenandoah and West Branch Susquehanna 
segments show good agreement with the observed data. The seasonal 
variation is well represented for most years, but occasional peaks are well 
above the observed data. This is typical of most of the simulation results, and 
may be due to the relatively large model segments and long stream reaches 
used in the Watershed Model. 

d. Both the NH 3 and P0 4 simulations are generally higher than the observed 
data points, but mostly in the overall range of the observed data for the 


6 


Chapter 1 Introduction 



Shenandoah and West Branch Susquehanna. Both of these constituents are 
highly sensitive to the algal simulation (phytoplankton and benthic algae), for 
which no data was available for any of the test model segments. Additional 
instream algal data is probably the greatest data need at this time to help 
assess the validity of the phytoplankton (and benthic algae) simulation and its 
impact on the inorganic nutrient simulations. 

It should be noted that for the Shenandoah, the greatest fraction of the total 
loads for both NH 3 and P0 4 are derived from point sources. Thus, although 
the concentration peaks are likely due to nonpoint sources, the point sources 
are major contributors to the total load. 

e. The Total N results for the Shenandoah and West Branch Susquehanna 
segments are quite good and track the observed data with reasonable accuracy, 
while the Total P results are somewhat high. 

f. The organic components follow this pattern i.e. the Organic N is similar to 
the observed while the Organic P is somewhat high, leading to the differences 
shown to the totals. In our simulations, 30% to 40% of the organics is 
derived from the animal waste model segment. Also, the organic loads from 
the non-AGCHEM segments are derived from the BOD simulation with the 
conversion to organic N and P based on algal stoichiometry as derived in 
Phase II. It is clear that the BOD-organics conversion factors could be 
adjusted to improve the organic P simulation without greatly deteriorating the 
organic N simulation. However, both the animal waste loading representation 
and the algal N/P ratios should be further investigated in a joint effort to 
improve the organic simulation. 

g. Except for the inorganic nutrients, the Monocacy results are generally 
consistent with the level of agreement shown in the other test segments. 

Flow, sediment, water temperature, DO, BOD, TOC, Chi a, and benthic 
algae are all consistent with the other results, and show generally good 
agreement when observed data is available. 

h. For the Monocacy, concentrations peaks for the inorganic nutrients are high in 
spite of the loads from the agricultural land uses being in the lower end of the 
expected range. Loadings from the other land uses are all reasonable, so the 
high peaks remain a mystery needing further analysis and calibration. 

i. It should be noted that the Monocacy Segment 750 is the smallest of the 
Above Fall Line segments, and many of the watershed characteristics and 
parameters were based on the entire Phase II Segment 210 which included the 
new Segment 750 in the upper reaches of the watershed. Watersheds of this 
size, with low flows often less than 10 cfs, require more detailed spatial 
information in order to represent their behavior. Future efforts should review 
the land use, slopes, agricultural practices, and applications rates for this small 
watershed to assess the accuracy of the model input values. 


Chapter 1 Introduction 


Nutrient Reduction Scenarios 


To demonstrate the use of the Watershed Model for evaluating the impacts of 
alternative nutrient reduction practices, selected scenarios were developed and 
simulated for the Shenandoah model segments. These alternatives were an outgrowth 
of the sensitivity runs performed with the AGCHEM module using the yield-based 
plant uptake algorithm. These alternatives do not represent actual nor even 
recommended practices for the Shenandoah Basin; they are simply potential 
scenarios of model changes that are used to demonstrate and assess issues of 
concern in developing practices for evaluation. 

Two alternative scenarios were developed and compared to the Base Conditions which 
were represented by the calibrated conditions on the Shenandoah Basin. The 
alternatives were designed to represent a potential range of conditions that would 
likely be of interest. This demonstration of the simulation of alternative nutrient 
reduction scenarios has shown that the Watershed Model with the refined AGCHEM 
plant uptake routines provides a reasonable representation of nutrient balances at the 
watershed scale for evaluation of management options. Some of the conclusions and 
issues identified in this effort are as follows: 

a. The form, amount, and timing of nutrient (fertilizer and manure) applications 
are critical to reasonable modeling of watershed nutrient balances and the 
potential impacts of nutrient reduction alternatives. 

b. The Watershed Model with the refined AGCHEM plant uptake routines 
developed in this work provides a viable framework for investigating these 
issues — form, amount, timing of applications — and their impacts on resulting 
water quality. 

c. Because of the critical importance of these application issues, further efforts 
should be directed to more accurately defining these parameters for both the 
current (Base) application scenario and potential nutrient reduction alternatives 
of interest to the CBPO and it member states. 

d. Since nutrient application is a direct function of crop needs, the CBPO should 
consider upgrading the Watershed Model to simulate the major crops 
individually and remove the ’composite crop’ representation and its associated 
limitations. Further investigation of specific practices (e.g. split applications, 
cover crops, manure practices) and expected crop yields for individual model 
segments should be pursued as part of this effort. 

e. If manure management and utilization is to be a significant component of the 
CBP nutrient reduction efforts, mineralization and subsequent availability of 
organic N from animal waste should be further investigated and the ability of 
the AGCHEM module to represent this component should be improved. 
Current efforts are underway to include multiple organic N compartments 
within AGCHEM to better model dissolved organic N (DON) from forested 
areas; these refinements may provide an opportunity to also address the issues 
related to plant availability of manure N. 


8 


Chapter 1 Introduction 



Format of this Report 


Following this introduction, Chapter 2 describes the refinement of the AGCHEM 
plant uptake function, while Chapter 3 presents the results of testing and sensitivity 
analyses on the Shenandoah cropland model segments. The changes associated with 
using the new yield-based function and additional refinements in Phase III are 
discussed in Chapter 4, and calibration results are presented, for the three test model 
segments. In Chapter 5, alternative scenarios of nutrient reduction practices are 
discussed and the impacts on both segment and watershed nutrient loadings are 
presented for the Shenandoah, as a demonstration of the model capabilities for 
assessing nutrient management options. The Appendices include complete simulation 
results for each test subbasin along with the results of the alternative nutrient 
reduction scenarios. 


Chapter 1 Introduction 


9 



2 Refinement of the AGCHEM 
Plant Uptake Function 


Overview of AGCHEM and Plant Uptake Issue 

Figure 2 shows the PERLND module of HSPF along with its various component 
submodules; the AGCHEM module (or subroutines) are shown within the dashed lines 
encompassing the MSTLAY, PEST, NITR, PHOS, and TRACER subroutines. Plant 
uptake of soil nutrients is performed within the NITR and PHOS modules, whose 
transformation diagrams are shown in Figure 3. Plant uptake, and all other 
biochemical transformations in Figure 3, are represented (in HSPF Version No. 10) as 
first-order rate processes with an Arhennius temperature correction adjustment based 
on simulated soil temperatures. The first-order plant uptake rates are defined by the 
user, can be specified separately for each soil zone (i.e. surface, upper, lower, 
groundwater) within HSPF, and can vary for each month to approximate the monthly 
pattern of crop growth and nutrient uptake. The rates are adjusted during calibration 
to mimic the expected annual nutrient uptake and the seasonal pattern for the specific 
crop and practice. 

As part of the Phase II CBP Watershed Model application, potential nutrient 
management alternatives included reduced nutrient application rates for the 
agricultural cropland categories (Conventional Tillage, Conservation Tillage, Hay) in 
the Watershed Model. Since the AGCHEM modules of HSPF use first-order monthly 
uptake rates to represent time-varying plant nutrient uptake, the calculated uptake 
amounts are highly sensitive to, and a direct function of, the available nutrients in the 
soil profile and the specific nutrient application rates. This causes a problem when 
application rates are changed, such as under nutrient reduction alternatives, because 
the uptake amounts are not a function of expected crop yields and associated nutrient 
uptake; thus, even though sufficient nutrients may be available to satisfy crop needs 
under the reduced application rates, the calculated uptake may be less than the crop 
needs because of the first-order formulation. 

Review of Available Plant Uptake Functions 

As part of a previous effort, we reviewed the problem and issues related to the plant 
uptake algorithms in the AGCHEM modules (NITR, PHOS) of HSPF, along with the 
primary alternative algorithms used in a number of current agricultural nutrient 
models (Donigian and Patwardhan 1994). Based on that review effort and the 
compatibility of alternative functions with the AGCHEM and HSPF soil profile 


10 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 




PERLND Structure Chart 


PERLND 



Figure 2. 


PERLND structure chart - 


























Nutrient Transformations Simulated by the AGCHEM Module 



K-Reaction Rate 


Parameters 

A. Nitrogen transformations in NITR module 



KADP KMP 

B. Phosphorus transformations in PHOS module 


Figure 3. 


Nitrogen and phosphorus transformations in AGCHEM 















representation, we selected the conceptual approach of the plant uptake formulation in 
the NLEAP model (Shaffer, Halvorson, and Pierce 1991) for incorporation into 
AGCHEM. 


This selection was based on review and evaluation of the plant uptake algorithms for 
the following seven agricultural models: 


MODEL 

CREAMS 

OPUS 

NLEAP 

DRAINMOD-N (same as NLEAP) 
GLEAMS (same as CREAMS) 
EPIC 

ADAPT (it is same as GLEAMS) 


REFERENCE 

Knisel 1980 
Smith 1992 

Shaffer, Halvorson, and Pierce 1991 
Breve 1994, Skaggs 1978 
Leonard, Knisel, and Still 1986 
Sharpley and Williams 1990 
Ward, Alexander, Fausey, and Dorsey 
1988 


Many of these models share similar plant nutrient uptake functions. For example, 
the NLEAP functions are used in DRAINMOD-N, and the CREAMS subroutines are 
used in both the GLEAMS and ADAPT models. The plant uptake functions of these 
models were reviewed with respect to the following criteria, in order to evaluate their 
ability to be adapted to the HSPF AGCHEM module: 


a. Assumptions related to transformations (i.e. first-order, monod, Michaelis- 
Menton) 

b. Input parameters needed, and availability of data for estimation 

c. Ability to simulate uptake from different soil layers, nitrogen fixation (for 
legumes), and uptake from both N0 3 and NH 4 pools 

d. Allowable methods and forms for nutrient applications (fertilizers and manure) 

e. Effect of moisture, temperature,and nutrients on crop growth and uptake 

f. Calibration dependence 

g. Model validation experience for nutrient uptake (N and P) 

h. Ability to simulate plant growth, and double cropping 

i. Timestep for simulation. 

The original review included brief descriptions of the plant uptake functions for each 
of the major plant uptake functions used in the models reviewed, including N LEA P, 
CREAMS, OPUS, and EPIC (Donigian and Patwardhan 1994). 

NLEAP Selection 


Based on our review of the available plant uptake functions in current agricultural soil 
nutrient models and the current algorithm detail in AGCHEM, we selected the plant 
uptake functions of the NLEAP model, to be adapted and incorporated into 
AGCHEM. This selection was based on the following characteristics of the NLEAP 
plant nutrient uptake function: 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 


13 



• Calculates crop nutrient needs as a function of expected crop yield 

• Allows seasonal uptake variation based on expected crop growth patterns 

• Accommodates (or can be modified to accommodate) timesteps less than one 
day 

• Considers both N0 3 -N and NH 4 -N as available for N uptake 

• Considers N fixation, double cropping, and uptake from different soil layers 

• Except for N fixation, the N uptake functions can be adapted for P uptake in 
AGCHEM 

• Overall level of detail is consistent and compatible with AGCHEM 

NLEAP model plant uptake functions 

The following equation is used to calculate plant N uptake in NLEAP (Shaffer, 
Halvorson, and Pierce 1991): 


= YG*TNU*fNU*ITIME 


( 1 ) 


where 

YG 

TNU 

fNU 

ITIME 


N uptake demand (Ib/acre/time step) 

yield goal or maximum yield (Ib/ac) 

total N uptake (lb of N Uptake/lb of Yield) 

fractional N uptake demand at the midpoint of the time step 

time step 


The normalized curve that relates fNU to relative crop growth stage is shown in 
Figure 4. The value of fNU varies between 0 and 1, and is the average of fNU 
computed at the last time step and the current time step. 

The N uptake demand is met between the upper and lower soil horizons, with the 
upper horizon corresponding to one foot (30.5 cm) and the lower horizon extending to 
the bottom of the root zone. NLEAP assumes that if the crop roots are present only 
in the top 30 cm of the soil, then 100% of the nitrogen uptake demand is met from 
the top soil layer. If the crop roots extend to 60 cm of the soil profile, then 90% of 
the nitrogen uptake is from the top 30 cm, and 10% from the bottom horizon of the 
soil profile. When crop roots penetrate more than 60 cm into the profile, then it is 
assumed that 80% of the nitrogen uptake is from the top 30 cm, and 20% from the 
lower horizon. 


The nitrogen that is available for uptake from the upper soil horizon is computed as 
follows: 


N^, = NAF + N1T1 (2) 

where NAF is the NH 4 -N content and N1T1 is the N0 3 -N content in the upper soil 
horizon. From the lower soil horizon, it is computed as 

N avaU2 = N1T2 (3) 

where N1T2 is the N0 3 -N content in the lower horizon (lb/acre). Thus, uptake from 
the lower horizon is restricted to N0 3 -N. The nitrogen uptake in each layer is 


14 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 





Figure 4. NLEAP fNU function for plant uptake 


constrained by N availability in that layer. Therefore, N plt is set equal to the smaller 
of or (N^, + (Shaffer, Halvorson, and Pierce 1991). 

SoU N uptake by legumes is taken as either the N demand by the crop or the sum of 
Navaiu and N avail2 , whichever is smaller. If the N demand is greater that the N 
available in soil, the plant is assumed to obtain the difference from N 2 fixation. 

The NLEAP plant uptake subroutines are designed to allow the user to consider 
multiple cropping periods and alternative forms of nutrient inputs, such as urea or 
UAN (urea-ammonium-nitrate solution), ammonium sulfate, ammonium nitrate, and 
anhydrous ammonia. The manual allows the user to estimate and deduct from the 
application the amount of ammonia loss from fertilizer N applications, based on 
application methods, soils and climate scenarios (Meisinger and Randall 1991). 

Adaptation of NLEAP for HSPF/AGCHEM 

Due to differing hydrology, soil moisture, and soil profile simulation procedures 
between NLEAP and AGCHEM, and the conceptual differences between the HSPF 
watershed and NLEAP field-scale approaches, the NLEAP plant N uptake functions 
required adaptation in order to be consistent and compatible with HSPF/AGCHEM.. 
The changes primarily provided greater user flexibility in defining the timing and 
distribution of plant uptake from the individual soil layers, whose depths are also 
user-specified in HSPF, and to represent a wider potential range of watershed 
conditions. 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 


15 



















To adapt the NLEAP approach to the AGCHEM and HSPF model structure, the 
following adjustments were implemented: 

a. Total annual yield is specified in terms of a target N and P uptake, so that the 
yield goal (YG) in NLEAP is not needed. 

b. The fNU function is replaced with 12 monthly values (user-defined), along 
with planting and harvesting dates, to define the target uptake variability 
during the year (i.e. uptake curve). This is a more flexible approach, 
consistent with AGCHEM/HSPF and facilitates multiple cropping by accepting 
multiple sets of planting and harvesting dates. 

c. In place of the rigidly defined rules for uptake fractions from the upper and 
lower soil layers in NLEAP, we have incorporated the capability for the user 
to define the fraction of the total daily uptake demand that is derived from 
each of the four soil zones in AGCHEM. Thus, the user specifies 12 
monthly values for each soil zone that control how much of the total uptake is 
calculated from that zone. 

d. NLEAP does not account for moisture or temperature stress conditions, and 
possibly because of this, it tends to predict relatively constant annual uptake 
based on our limited discussions with model users. We have included 
moisture stress by stopping uptake when soil moisture is less than wilting 
point for each soil layer. Discussions with a few researchers have indicated 
that temperature stress is not important by itself; its impact is mostly on 
reducing moisture and then the moisture stress impact is considered. 
Temperature mostly impacts the availability of N through the other 
mechanisms e.g. nitrification, mineralization, for which the temperature 
adjustments are already considered in the model. 

e. When stress conditions occur, we keep track of the nutrient deficit, i.e. the 
amount of unsatisfied nutrient demand, and allow enhanced uptake if 
additional nutrients become available, such as through fertilizer/manure 
applications or atmospheric deposition. This is implemented by having the 
user define the ratio of the maximum allowable uptake to the target uptake; 
the daily (and timestep) uptake will not be allowed to exceed this limit. 


New Yield-Based Plant Uptake Option in AGCHEM 

In the new yield-based plant nutrient uptake formulation in AGCHEM, a total annual 
target, NUPTGT, is specified by the user, and is then divided into monthly targets 
during the crop growing season for each soil layer. The monthly target for each soil 
layer is calculated as: 


MONTGT = NUPTGT* NUPTFM(MON)* NUPTM(MON)* 
CRPFRC(MON,ICROP) 


16 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 




where: 

MONTGT = 
NUPTGT = 
NUPTFM = 
NUPTM = 
CRPFRC = 


MON 

ICROP 


monthly plant uptake target for current crop, mass N/area 

total annual uptake target, mass N/area 

monthly fraction of total annual uptake target, dimensionless 

soil layer fraction of monthly uptake target, dimensionless 

fraction of monthly uptake target for current crop, 

dimensionless. This is 1.0, unless the month contains parts of 

two or more crop seasons, in which case the monthly uptake 

target is divided among the crops according to the number of 

days of the month belonging to each crop season. 

current month 

index for current crop 


Planting and harvesting dates can be specified for up to three separate crops during 
the year. Plant uptake is assumed to occur only during a growing season, defined as 
the time period between planting and harvest. When portions of two growing seasons 
are contained within one month, the total monthly target is divided between the two 
crops in proportion to the number of days in each season in that month. The daily 
target is calculated by starting at zero at the beginning of a crop season and using a 
trapezoidal rule to solve for monthly boundaries; linear interpolation is used to solve 
for daily values between the monthly boundaries, and between a monthly boundary 
and a planting or harvest date. 


Yield-based plant uptake only occurs when the soil moisture is above the wilting 
point, which is specified by the user for each soil layer, and sufficient nutrients are 
available. No temperature rate adjustment is performed, but all uptake is stopped 
when soil temperature is below 4 degrees C. If the uptake target is not met during a 
given interval, whether from nutrient, temperature, or moisture stress, then a deficit is 
accumulated, and applied to the next interval’s target. When uptake later becomes 
possible, the program will attempt to make up the deficit by taking up nitrogen at a 
rate higher than the normal daily target, up to a user-specified maximum defined as a 
multiple of the target rate. The deficit is tracked for each soil layer, and is reset to 
zero at harvest, i.e. it does not carry over from one crop season to the next. 


When using the yield-based plant uptake option, it is also possible to represent 
leguminous plants (e.g. soybeans) that will fix nitrogen from the atmosphere. The 
algorithm is designed to allow N fixation only to make up any shortfall in soil 
nitrogen, i.e. fixation is only allowed if the available soil nitrogen (i.e. nitrate and 
solution ammonium) is insufficient to satisfy the target uptake. The maximum daily 
nitrogen fixation rate is subject to the same limits as the uptake under deficit 
conditions noted above. 

The version of AGCHEM included with HSPF Version No. II (Bicknell et al 1995 - 
to be released in late 1995) allows three optional formulations for plant uptake: first- 
order (current formulation in HSPF No. 10), the new yield-based algorithm, and a 
saturation kinetics (i.e. Michaelis-Menton) approach recommended for forested 
conditions. The saturation kinetics approach is being implemented and tested under a 
joint USGS/EPA effort to improve AGCHEM for representing N mass-balance 
modeling for forested areas at the watershed scale. The saturation kinetics approach 
was recommended in a report by Oak Ridge National Laboratory as part of this joint 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 


17 


effort (Hunsaker, Garten, and Mulholland 1994). 

New AGCHEM Module Input Parameters 


The modified and new parameter tables for nitrogen required for the yield-based plant 
uptake option in AGCHEM are listed below: 


NIT-FLAGS 

SOIL-DATA2 

CROP-DATES 

NIT-YIELD 

MON-NUPT-FR1 

MON-NUPT-FR2 


Additional flags added for plant uptake options and N fixation 
Wilting point values for each soil layer - NEW TABLE 
Planting and harvesting dates for up to three crops — NEW 

TABLE 

Optimum yield target and allowable ratio of max to target 
daily uptake — NEW TABLE 

Monthly fractions to distribute the annual yield target over 12 
months - NEW TABLE 

Monthly fractions to distribute the calculated daily yield target 
for each soil layer — NEW TABLES, one for each of the four 
soil layers 


The corresponding required phosphorus tables are: 


PHOS-FLAGS, PHOS-YIELD, MON-PUPT-FR1, MON-PUPT-FR2 

The specific parameter names and formats are described in the updated HSPF User 
Manual for Version No. ll(Bicknell et al. 1995); Table 1 shows an example of the 
nitrogen parameter tables and values for the Shenandoah model test segment. Note 
that any line with three asterisks (***) are comment lines used to help clarify and 
explain the model input; they are not read by the code. 


Estimating Parameter Values 

A variety of information sources need to be utilized to properly estimate the needed 
model parameters. Much of the information needed for testing the AGCHEM yield- 
based uptake was originally derived in the initial Phase II Watershed Model effort 
(Donigian et al. 1994). Below we discuss a few of the information sources and issues 
involved estimating uptake parameters. 

In table NIT-FLAGS, two additional flags have been added for selection of the uptake 
option to use and activation of nitrogen fixation. The uptake flag options are as 
follows: 

NUPTFG = 1 First-order uptake 
NUPTFG=2 Yield-based uptake 

NUPTFG = 3 Saturation kinetics uptake (implemented for N only) 


The N fixation flag, NFIXFG, activates the fixation process when it is set to 1; it can 
be used with either the yield-based or saturation kinetics uptake options. 


18 


Chapter 2 Refinement of the AGCHEM Plant Uptake Function 




Table 1. New Nitrogen Parameter Tables Needed For Yield-Based Plant 
Uptake (example from Shenandoah UCI) 


NIT-FLAGS 

<PLS > NITROGEN FLAGS *** 

# - # VNUT FORA ITMX BNUM CNUM NUPT FIXN *** 

192 196 1 100 3 1 1 

202 206 1 100 3 1 1 

END NIT-FLAGS 


S0IL-DATA2 


<PLS > 

SWILTP 

UWILTP 

# - # 

(IN/IN) 

(IN/IN) { 

192 196 

0.01 

0.02 

202 206 

0.01 

0.02 

END SOIL- 

•DATA2 


CROP-DATES 


<PLS > 


CROP 1 

# - # NCRP PM 

PD HM HD 

192 196 

1 1 

1 12 31 

202 206 

1 1 

1 12 31 

END CROP- 

DATES 


NIT-YIELD 



<PLS > 

NUPTGT 

NMXRAT *** 

# - # 

CLB/AC) 

*** 

192 

145.00 

2.0 

193 

155.00 

2.0 

196 

60.00 

2.0 

202 

155.00 

2.0 

203 

155.00 

2.0 

206 

60.00 

2.0 

END NIT-YIELD 


MON-NUPT-I 

FR1 



LUILTP 

IN/IN) 

0.05 

0.05 


AWILTP *** 
(IN/IN) *** 
0.18 
0.18 


CROP 2 

PM PD HM HD 


<PLS > Monthly fractions for plant uptake target 
# - # JAN FEB MAR APR MAY JUN JUL AUG SEP 

192 196.013 .03 .05 .07 .13 .19 .20 .15.085 

202 206 .013 .03 .05 .07 .13 .19 .20 .15 .085 

END MON-NUPT-FR1 


CROP 3 *** 

PM PD HM HD *** 


*** 

OCT NOV DEC *** 
.05 .028 .004 
.05 .028 .004 


MON-NUPT-FR2 

<PLS > Monthly fractions for plant uptake target from surface *** 

# - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC *** 

192 196 .01 .01 .01 .01 .01 .01 .01 .01 .01 .01 .01 .01 

202 206 .01 .01 .01 .01 .01 .01 .01 .01 .01 .01 .01 .01 

END MON-NUPT-FR2 

MON-NUPT-FR2 

<PLS > Monthly fractions for plant uptake target from upper 

# - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 

192 196 .56 .56 .56 .56 .56 .56 .44 .35 .35 .35 .56 

202 206 .56 .56 .56 .56 .56 .56 .44 .35 .35 .35 .56 

END MON-NUPT-FR2 

MON-NUPT-FR2 

<PLS > Monthly fractions for plant uptake target from lower *** 

# - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC *** 

192 196 .43 .43 .43 .43 .43 .43 .55 .64 .64 .64 .43 .43 

202 206 .43 .43 .43 .43 .43 .43 .55 .64 .64 .64 .43 .43 

END M0N-NUPT-FR2 


*** 
DEC *** 
.56 
.56 


Chapter 2 


Refinement of the AGCHEM Plant Uptake Function 


19 



In table SOIL-DATA2, wilting point values (volume basis, or inch moisture/inch of 
depth) are specified for each soil zone as a threshold for moisture stress conditions. 
Wilting point (or 15-bar soil moisture) information is often tabulated as a ftmction of 
soil texture, and can be found in local soil surveys, from the County Extension 
Service, or published literature (e.g. Rawls, Brakensiek, and Saxton 19S2; Mullins et 
al. 1993). Since the surface soil layer only contains moisture during runoff, it will 
normally be in a moisture stress condition leading to very little nutrient uptake from 
this layer. 

Table CROP-DATES includes the planting and harvesting dates for up to three annual 
crops. Data from local agronomists or agricultural agencies is probably the best 
source, and a standard national reference is the U.S. Department of Agriculture 
Handbook No. 628 entitled "Usual Planting and Harvesting Dates for U.S. Field 
Crops" (U.S.D.A. 1984). 

Tables NIT-YIELD and PHOS-YIELD include the target yields (in terms of N and P 
uptake) and ratios of daily maximum to daily target uptake rates for N and P, 
respectively. The target yields are essentially the maximum, or optimum, values of N 
and P taken up by the plant, as the algorithm will not calculate values in excess of 
these targets. Donigian et al (1994) developed expected yield ranges for selected 
crops for the Phase II Chesapeake Bay Watershed Model effort based on variety of 
literature sources and state-level crop yield information. Local yield data combined 
with N and P uptake estimates from standard agronomic references (e.g. Tisdale, 
Nelson, and Beaton 1985; Meisinger and Randall 1991) can be used to develop these 
targets for local site conditions. 

For the ratio of maximum to target daily uptake rates, guidance needs to be developed 
from the plant physiology literature. Current values of 1.5 to 5.0 are expected, with 
the values for N greater than those for P, pending further literature review and 
analysis. 

In Tables MON-NUPT-FR1 and MON-PUPT-FR1, monthly fractions of the annual 
target uptake for N and P are used to distribute the annual amount over the year. 

Based on local information, or using planting/harvest dates and S-curve uptake pattern 
from NLEAP (Figure 4), the monthly fractions can be estimated to provide the 
desired uptake curve. 

Tables MON-NUPT-FR2 and MON-PUPT-FR2 are specified up to four times each 
for N and P, respectively, to define the fraction of the daily uptake target derived 
from each of the four soil layers. Typically, uptake from the groundwater layer is set 
to zero, and uptake from the surface is relatively small as it is usually under moisture 
stress conditions except when runoff is occurring. Thus the majority of the uptake is 
derived from the upper and lower soil zones, with the upper soil zone dominating 
during the early growing season and the lower zone becoming a greater source during 
the latter part of the season. As these depths are specified by the user, the actual 
depth values used must be considered when deriving the layer fractions. 


20 


Chapter 2 Refinement of the AGCHEM Riant Uptake Function 



3 Testing the New Yield-Based 
AGCHEM Plant Uptake Routine 


Introduction 

The new yield-based nutrient uptake routines in AGCHEM were tested on the 
Shenandoah, Monocacy, and West Branch Susquehanna model segments, shown in 
Figure 1. These segments were selected for their diversity of location and presence of 
agricultural cropland as a major portion of the drainage area. The testing focussed on 
the evaluation of the new uptake routines, but also included other enhancements to the 
modeling that were included as part of the refinements under Phase III of the CBP 
Watershed Model. These refinements included the following: 

a. Activation of direct atmospheric deposition linkages for selected nutrients for 
the cropland model segments simulated with AGCHEM. 

b. Utilization of Enhanced SPECIAL ACTIONS capabilities to improve the 
nutrient application procedures and reduce the length of the model input. 

These changes are discussed below along with the results of the model testing. It 
should be noted that testing primarily involved evaluating the behavior of the 
algorithm through sensitivity analyses, and comparing the new routine predictions to 
those using the first-order option employed in Phase II. Except for the changes noted 
above, die model representation was the same as in Phase II, including the composite 
crop, with the primary difference being the new yield-based uptake algorithm. 


Atmospheric Deposition and SPECIAL ACTIONS 
Enhancements 

Atmospheric Deposition 

In HSPF Version No. 11 (Bicknell et al. 1995), atmospheric deposition (AD) can be 
added as a dry or total deposition flux in lbs/ac, and/or as wet deposition as a 
concentration (timeseries or monthly values) that is multiplied by precipitation; for our 
testing we used the existing AD timeseries as the total deposition flux. As part of the 
AGCHEM testing on the Shenandoah, Monocacy and West Branch Susquehanna, we 
used the new atmospheric deposition (AD) capabilities of HSPF No. 11 to replace the 
procedures in Phase II that added this component as part of the fertilizer and manure 

Chapter 3 Testing the New Yield-Based AGCHEM Plant Uptake Routine 


21 





applications. Consequently, as part of this effort to convert the Phase II model input 
to Phase III, we deleted the AD component of nitrogen from the SPECIAL 
ACTIONS block of the model input, where it was combined with the nutrient 
applications, and implemented the direct linkage of the AD timeseries (WDM datasets) 
with the corresponding soil storages for the AGCHEM segments — CNT, CST, HAY. 

Also, in Phase II all AD of N for the AGCHEM segments was assumed to be in N0 3 
form. In this step, we re-calculated the new AGCHEM N0 3 application rate, i.e. 
without AD, and modified SPECIAL ACTIONS accordingly so that only fertilizer and 
manure components were represented. 


Enhanced SPECIAL ACTIONS and AGCHEM Output 

Under funding by both the U.S. EPA and U.S. Geological Survey, a number of 
enhancements have been implemented over the past few years to the SPECIAL 
ACTIONS of HSPF Version No. 11 (Bicknell et al. 1995). These enhanced 
capabilities include a number of options that allow for a much more compact UCI 
(HSPF User’s Control Input, or model input) by making this block much shorter, and 
allow for a better representation of agricultural practices and conditions. The 
primary options we used in this effort include the following: 

a. REPEAT function — duplicates selected actions each year, and eliminates 
the need to repeat specification of the annual actions in the UCI. 

b. DISTRB function — allows a single action (e.g. application) to be split into 
multiple applications over a defined time period. This is being used to 
distribute fertilizer applications over a 5-day application ’window’. 

c. UVNAME function — allows a user-defined variable name to activate a pre¬ 
defined series of actions; this is used to distribute a total nutrient application 
into the appropriate soil layers without the need to specify each soil layer for 
each application. 

d. CONDITIONAL function — allows the user to have the program check to see 
if a specific condition exists, such as if rainfall is greater than 0.1 inches, and 
then the SPECIAL ACTION (either one or a group) can be performed if the 
condition is ’true’, or skipped if it is ’false’. This is currently used to avoid 
fertilizer applications on days with significant rainfall. 


In addition, the AGCHEM output summary now also shows the total AD for each 
nutrient form, and the applied amounts of each nutrient form as defined in the 
SPECIAL ACTIONS block. 

AGCHEM Testing Results 

Table 2 shows a comparison of the nutrient uptake and runoff results for the 1984-87 
period for all three cropland AGCHEM segments for the Upper Shenandoah model 


22 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 



segment 190 using both the first-order uptake option (as used in Phase II) and the new 
yield-based plant uptake routines. Figure 5 shows the annual uptake curves for 
Conventional Tillage for 1984-87 for both options for the same conditions. Tables 3, 
4, and 5 show AGCHEM summaries for the three cropland segments for the Upper 
Shenandoah, while Appendix A includes complete results for all three test model 
segments and for the entire simulation period of 1984-91. 

The results in Table 2 indicate that the new yield-based plant uptake option can 
produce essentially the same uptake amounts as the original first-order approach; the 
two uptake amounts are either identical or within a few percent. The only exception 
was for the Hay segment where the first-order uptake of P was below the expected 
range, so the uptake target was increased to correct for this discrepancy. 


Runoff amounts are slightly less under the yield-based option for most nutrient 
variables. However, the sediment associated organic nutrients increased due to small 
differences in the precipitation timeseries (from Phase II to Phase III) which produced 
minor runoff differences but much greater differences for sediment and associated 
nutrients. Thus, the differences were not due to the new algorithm. 

The annual N uptake curves shown in Figure 5 for both options indicate that the 
annual patterns are similar, and the yield-based option is somewhat less variable. 

This is to be expected as the yield-based option is designed to be limited by available 
nutrients but not a direct function of the available amount. Figure 6 shows the full 
eight-year simulation of N uptake for Conventional Tillage in the Shenandoah, along 
with the calculated N deficit variability during each year. 

Tables 3, 4, and 5 are examples of tables produced by a separate program (called 
OUTSUM) developed to read the standard HSPF output and summarize important 
variables and fluxes for use in calibration and alternative scenario evaluation. New 
variables and fluxes shown in these tables that were added to HSPF Version No. 11 
include atmospheric deposition, nutrient application form and amounts, and plant 
uptake deficits. These are key components in identifying the nutrient balance 
simulated by AGCHEM and comparing these components to observed data or 
expected ranges. 

Sensitivity to Application Rates 

Table 6 shows the results of sensitivity runs varying the N and P application rates by 
20%. Increasing the application rates by 20% leads to a 37% increase in N runoff 
and a 16% increase in P runoff; whereas a 20% decrease in rates leads to a 26% 
decrease in N runoff and a 13% decrease in P runoff. 

With respect to uptake amounts, the 20% increase leads to a 3% increase in N uptake 
and no significant increase in P uptake, demonstrating the design of the yield-based 
function to be relatively insensitive to application rates. However, the 20% decrease 
in application rates produces a 15% decrease in N uptake but no significant change in 
P uptake. The decrease is a direct result of the form of N application; with a 20% 
decrease in the Total N application rate, the amount of plant available N (i.e. 
ammonia and nitrate) is reduced to about 123 Ib/ac or 70% of the total, and is less 
than the needed plant uptake. The same condition does not occur for P because even 


Chapter 3 Testing the New Yield-Based AGCHEM Plant Uptake Routine 


23 


Table 2. AGCHEM Model Results for First-Order and Yield-Based Plant 
Uptake Options for Cropland in Upper Shenandoah Model 
Segment 190, 1984-87 (Ib/ac) 



Conventional 


Tillage 



First- 

Yield- 

Runoff Losses 

Order 

Based 

no 3 

17.49 

15.09 

NH 3 

3.75 

3.63 

Org N 

5.03 

5.03 

Total N 

26.26 

23.75 

P0 4 

2.29 

2.14 

Org P 

1.40 

1.40 

Total P 

3.69 

3.54 

Plant Uptake 

N 

130.1 

133.9 

P 

22.9 

23.6 

Nutrient Applications 


N 

213.8 

213.8 

no 3 

29.1 

29.1 

nh 3 

127.9 

127.9 

Org N 

56.8 

56.8 

P 

59.1 

59.1 

P0 4 

43.8 

43.8 

Org P 

15.3 

15.3 


Conservation Hay 

Tillage 


First- 

Yield- 

First- 

Yield- 

Order 

Based 

Order 

Based 

15.45 

12.25 

4.44 

3.40 

3.68 

3.58 

0.54 

0.54 

4.37 

4.37 

1.62 

1.62 

23.50 

20.21 

6.61 

5.56 

2.08 

1.93 

0.94 

0.90 . 

1.17 

1.17 

0.45 

0.45 

3.26 

3.10 

1.38 

1.35 


136.3 

143.1 

45.6 

45.8 

22.7 

23.3 

13.2 

18.7 


217.3 

217.4 

44.4 

44.4 

30.0 

30.0 

7.3 

7.3 

130.6 

130.6 

28.3 

28.3 

56.8 

56.8 

8.8 

8.8 

58.3 

58.3 

30.8 

30.8 

43.0 

43.0 

27.5 

27.5 

15.3 

15.3 

3.3 

3.3 


24 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 



Table 3. AGCHEM Summary Results for Conventional Tillage in the 
Shenandoah Model Segment 192 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 

Surface 

11.89 

9.687 

2.636 

8.933 

8.286 

Interflow 

3.631 

3.752 

1.582 

3.289 

3.063 

Baseflow 

6.611 

5.361 

4.152 

5.442 

5.391 

Total 

22.13 

18.80 

8.369 

17.66 

16.74 

Sediment Loss (t/a) 

1.390 

2.370 

0.2770 

1.560 

1.399 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

1.181 

0.4099 

0.2172 

0.4990 

0.5768 

Interflow 

12.93 

13.58 

8.011 

11.73 

11.56 

Baseflow 

2.975 

2.346 

2.439 

4.034 

2.949 

Total 

17.09 

16.33 

10.67 

16.27 

15.09 

NH3 Loss 

Surface 

4.554 

0.6716 

0.8936 

1.356 

1.869 

Interflow 

1.353 

1.781 

1.518 

2.262 

1.729 

Baseflow 

0.3573E-01 

0.9326E-02 

0.3888E-02 

0.3509E-02 

0.131 IE-01 

Sediment 

0.1642E-01 

0.2475E-01 

0.3416E-02 

0.1687E-01 

0.1536E-01 

Total 

5.959 

2.487 

2.419 

3.638 

3.626 

ORGN Sediment 

4.841 

8.743 

1.020 

5.521 

5.031 

Total N Loss (Ib/a) 

27.89 

27.56 

14.11 

25.43 

23.75 

P04 Loss 

Surface 

1.747 

0.8882 

0.8893 

1.005 

1.132 

Interflow 

0.5706 

1.181 

0.6109 

1.360 

0.9306 


BasefLow 0.6270E-03 0.7579E-05 0.4806E-05 0.8252E-05 0.1619E-03 


Sediment 

0.7212E-01 

0.1254 

0.1830E-01 

0.8645E-01 

0.7557E-01 

Total 

2.391 

2.195 

1.519 

2.451 

2.139 

ORGP Sediment 

1.342 

2.445 

0.2823 

1.534 

1.401 

Total P Loss (Ib/a) 

3.733 

4.639 

1.801 

3.985 

3.539 

Atm Depn. N03 (Ib/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (Ib/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

126.0 

129.0 

127.7 

129.0 

127.9 

Nitrate appln.(lb/a) 

28.48 

29.46 

29.05 

29.46 

29.11 

ORGN appln.(lb/a) 

56.76 

56.76 

56.76 

56.76 

56.76 

Total N appln.(lb/a) 

211.3 

215.2 

213.5 

215.2 

213.8 

P04-P appln.(lb/a) 

42.60 

44.39 

43.65 

44.39 

43.76 

ORGP appln.(lb/a) 

15.30 

15.30 

15.30 

15.30 

15.30 

Total P appln.(lb/a) 

57.91 

59.69 

58.95 

59.69 

59.06 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1000E-01 

0.1600E-01 

0.5000E-02 

0.1000E-01 

0.1025E-01 

Upper 

75.22 

73.86 

79.48 

83.89 

78.11 

Lower 

51.98 

57.08 

57.08 

57.08 

55.81 

Total 

127.2 

131.0 

136.6 

141.0 

133.9 

Phosphorus 

Surface 

0.8000E-02 

0.1200E-01 

0.3000E-02 

0.8000E-02 

0.7750E-02 

Upper 

19.58 

19.92 

19.93 

19.91 

19.83 

Lower 

3.753 

3.752 

3.752 

3.752 

3.752 

Total 

23.34 

23.68 

23.69 

23.67 

23.59 


Chapter 3 


Testing the New Yield-Based AGCHEM Plant Uptake Routine 


25 




Table 3. AGCHEM Summary Results for Conventional Tillage in the 
Shenandoah Model Segment 192 (Continued) 



1984 

1985 

1986 

1987 

SUM/AVER 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.441 

1.435 

1.446 

1.441 

1.441 

Upper 

11.61 

12.97 

7.396 

2.966 

8.736 

Lower 

5.196 

0.0000 

0.0000 

0.0000 

1.299 

Total 

18.25 

14.40 

8.842 

4.407 

11.47 

Phosphorus 

Surface 

1.243 

1.238 

1.247 

1.243 

1.243 

Upper 

0.4419 

0.9227E-01 

0.9982E-01 

0.1092 

0.1858 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

1.685 

1.330 

1.347 

1.352 

1.428 

Other Fluxes-Ib/ac 

N Mineralization 

18.66 

21.40 

22.05 

22.06 

21.04 

P Mineralization 

2.496 

2.487 

2.502 

2.459 

2.486 

Denitrification 

3.351 

4.699 

6.258 

6.860 

5.292 

N Inmobilization 

22.95 

26.50 

26.73 

26.17 

25.59 

P Immobilization 

12.99 

21.38 

17.73 

20.46 

18.14 


26 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 



Table 4. AGCHEM Summary Results for Conservation Tillage in the 
Shenandoah Model Segment 193 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 

Surface 

10.09 

8.250 

1.916 

7.327 

6.896 

Interflow 

3.565 

3.726 

1.503 

3.193 

2.997 

Baseflow 

7.245 

5.996 

4.483 

5.937 

5.915 

Total 

20.90 

17.97 

7.901 

16.46 

15.81 

Sediment Loss (t/a) 

1.010 

1.720 

0.1750 

1.050 

0.9887 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.9321 

0.2866 

0.1423 

0.3981 

0.4398 

Interflow 

11.54 

12.14 

6.482 

9.989 

10.04 

Baseflow 

2.574 

1.558 

1.123 

1.853 

1.777 

Total 

15.04 

13.99 

7.747 

12.24 

12.25 

NH3 Loss 

Surface 

5.337 

0.5397 

0.9575 

1.178 

2.003 

Interflow 

1.153 

1.573 

1.356 

2.145 

1.557 

Baseflow 

0.3701E-01 

0.8887E-02 

0.3359E-02 

0.3275E-02 

0.1313E-01 

Sediment 

0.1171E-01 

0.1792E-01 

0.2089E-02 

0.1123E-01 

0.1074E-01 

Total 

6.538 

2.140 

2.319 

3.337 

3.583 

ORGN Sediment 

4.326 

7.789 

0.7913 

4.571 

4.369 

Total N Loss (Ib/a) 

25.91 

23.92 

10.86 

20.15 

20.21 

P04 Loss 

Surface 

2.150 

0.8366 

0.9565 

1.064 

1.252 

Interflow 

0.5270 

0.6874 

0.3784 

0.9238 

0.6292 

Baseflow 

0.6368E-03 

0.6012E-05 

0.2165E-05 

0.2519E-05 

0.1619E-03 

Sediment 

0.5165E-01 

0.9029E-01 

0.1169E-01 

0.5676E-01 

0.5260E-01 

Total 

2.729 

1.614 

1.347 

2.045 

1.934 

ORGP Sediment 

1.154 

2.097 

0.2111 

1.222 

1.171 

Total P Loss (Ib/a) 

3.883 

3.711 

1.558 

3.267 

3.105 


Atm Depn. N03 (Ib/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (Ib/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

128.4 

131.7 

130.4 

131.7 

130.6 

Nitrate appln.(lb/a) 

29.30 

30.41 

29.95 

30.41 

30.02 

ORGN appln.(lb/a) 

56.76 

56.76 

56.76 

56.76 

56.76 

Total N appln.CIb/a) 

214.5 

218.9 

217.1 

218.9 

217.3 

P04-P appln.(lb/a) 

41.67 

43.69 

42.85 

43.69 

42.98 

ORGP appln.(lb/a) 

15.30 

15.30 

15.30 

15.30 

15.30 

Total P appln.(Ib/a) 

56.97 

58.99 

58.15 

58.99 

58.28 


Plant Uptake (Ib/a) 
Nitrogen 
Surface 
Upper 
Lower 
Total 

Phosphorus 

Surface 

Upper 

Lower 

Total 


0.2800E-01 

80.37 

51.25 

131.6 

0.2400E-01 

81.97 

61.12 

143.1 

0.7000E-02 

88.71 

61.13 

149.9 

0.2500E-01 

91.98 

55.95 

148.0 

0.2100E-01 

85.76 

57.36 

143.1 

0.1900E-01 

18.93 

3.753 

22.70 

0.1800E-01 

19.50 

3.752 

23.27 

0.5000E-02 

19.91 

3.752 

23.67 

0.1900E-01 

19.90 

3.752 

23.67 

0.1525E-01 

19.56 

3.752 

23.33 


Chapter 3 Testing the New Yield-Based AGCHEM Plant Uptake Routine 


27 



Table 4. AGCHEM Summary Results for Conservation Tillage in the 
Shenandoah Model Segment 193 (Continued) 



1984 

1985 

1986 

1987 

SUM/AVER 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.523 

1.526 

1.544 

1.526 

1.530 

Upper 

12.49 

11.07 

4.300 

0.9946 

7.214 

Lower 

9.928 

0.0000 

0.0000 

5.153 

3.770 

Total 

23.94 

12.60 

5.844 

7.673 

12.51 

Phosphorus 

Surface 

1.232 

1.233 

1.246 

1.232 

1.236 

Upper 

1.085 

0.5133 

0.9982E-01 

0.1092 

0.4518 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.317 

1.746 

1.346 

1.341 

1.687 

Other Fluxes-lb/ac 

N Mineralization 

18.81 

22.25 

22.89 

22.01 

21.49 

P Mineralization 

2.765 

2.714 

2.759 

2.744 

2.746 

Denitrification 

2.505 

2.969 

2.725 

3.018 

2.804 

N Immobilization 

23.54 

27.70 

27.90 

27.21 

26.59 

P Immobilization 

15.33 

23.14 

19.00 

21.78 

' 19.81 


28 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 




Table 5. AGCHEM Summary Results for Hay Cropland in the Shenandoah 
Model Segment 196 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 

Surface 

9.811 

7.853 

1.582 

6.630 

6.469 

Interflow 

2.438 

2.491 

0.8270 

2.157 

1.978 

Baseflow 

7.159 

5.821 

4.034 

5.650 

5.666 

Total 

19.41 

16.16 

6.444 

14.44 

14.11 

Sediment Loss (t/a) 
Nutrient Loss (Ib/a) 
N03 Loss 

0.7640 

0.7510 

0.1110 

0.6820 

0.5770 

Surface 

0.6038 

0.3131 

0.8451E-01 

0.3273 

0.3322 

Interflow 

1.081 

0.8509 

0.4196 

1.028 

0.8449 

Baseflow 

3.258 

1.854 

1.373 

2.406 

2.223 

Total 

4.943 

3.018 

1.877 

3.762 

3.400 

NH3 Loss 

Surface 

0.9890 

0.3337 

0.1478 

0.3741 

0.4611 

Interflow 

0.6058E-01 

0.6783E-01 

0.4962E-01 

0.4995E-01 

0.5700E-01 

Baseflow 

0.3678E-01 

0.8706E-02 

0.2978E-02 

0.2619E-02 

0.1277E-01 

Sediment 

0.8143E-02 

0.7690E-02 

0.1182E-02 

0.7217E-02 

0.6058E-02 

Total 

1.095 

0.4179 

0.2016 

0.4339 

0.5371 

ORGN Sediment 

2.127 

2.138 

0.3088 

1.911 

1.621 

Total N Loss (Ib/a) 

, P04 Loss 

8.165 

5.574 

2.388 

6.107 

5.559 

Surface 

1.287 

0.5291 

0.3795 

0.7280 

0.7309 

Interflow 

0.1617 

0.1372 

0.5257E-01 

0.2094 

0.1402 

Baseflow 

0.6426E-03 

0.4208E-05 

0.8614E-06 

0.4387E-06 

0.1620E-03 

Sediment 

0.3867E-01 

0.3871E-01 

0.6658E-02 

0.3872E-01 

0.3069E-01 

Total 

1.489 

0.7050 

0.4387 

0.9761 

0.9022 

ORGP Sediment 

0.5728 

0.5998 

0.8567E-01 

0.5226 

0.4452 

Total P Loss (Ib/a) 

2.061 

1.305 

0.5244 

1.499 

1.347 

Atm Depn. N03 (Ib/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (Ib/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

28.31 

28.31 

28.31 

28.31 

28.31 

Nitrate appln.(lb/a) 

7.320 

7.320 

7.320 

7.320 

7.320 

ORGN appln.(lb/a} 

8.760 

8.760 

8.760 

8.760 

8.760 

Total N appln.(lb/a) 

44.39 

44.39 

44.39 

44.39 

44.39 

P04-p appln.(Ib/a) 

27.48 

27.48 

27.48 

27.48 

27.48 

ORGP appln.(lb/a) 

3.360 

3.360 

3.360 

3.360 

3.360 

Total P appln.(Ib/a) 

Plant Uptake (Ib/a) 

30.84 

30.84 

30.84 

30.84 

30.84 

Nitrogen 

Surface 

0.4000E-02 

0.4000E-02 

0.1000E-02 

0.6000E-02 

0.3750E-02 

Upper 

32.82 

33.44 

33.49 

32.25 

33.00 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

45.66 

46.28 

46.33 

45.09 

45.84 

Phosphorus 

Surface 

0.8000E-02 

0.8000E-02 

0.2000E-02 

0.1100E-01 

0.7250E-02 

Upper 

15.94 

15.94 

15.94 

15.93 

15.94 

Lower 

3.002 

3.001 

3.001 

1.924 

2.732 

Total 

18.95 

18.95 

18.94 

17.86 

18.68 


Chapter 3 


Testing the New Yield-Based AGCHEM Plant Uptake Routine 


29 



Table 5. AGCHEM Summary Results for Hay Cropland In the Shenandoah 
Model Segment 196 (Continued) 



1984 

1985 

1986 

1987 

SUM/AVER 

Deficit (Ib/a) 






Nitrogen 






Surface 

0.4959 

0.4959 

0.4994 

0.4945 

0.4964 

Upper 

3.910 

3.292 

3.236 

4.462 

3.725 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

4.406 

3.788 

3.735 

4.957 

4.222 

Phosphorus 






Surface 

0.9928 

0.9924 

0.9988 

0.9895 

0.9934 

Upper 

0.8367E-01 

0.7382E-01 

0.7985E-01 

0.8734E-01 

0.8117E- 

Lower 

0.0000 

0.0000 

0.0000 

1.077 

0.2693 

Total 

1.076 

1.066 

1.079 

2.154 

1.344 

Other Fluxes-Ib/ac 






N Mineralization 

19.27 

19.33 

19.17 

18.95 

19.18 

P Mineralization 

2.342 

2.351 

2.244 

1.954 

2.223 

Denitrification 

4.162 

3.366 

3.511 

4.291 

3.832 

N Immobilization 

8.629 

9.451 

9.354 

9.358 

9.198 

P Immobilization 

11.51 

13.02 

9.969 

12.05 

11.64 


30 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 



IN LB/AC 



FIRST ORDER UPTAKE 
YIELD-BASED UPTAKE 


jfmamjjasond[jfma«jjasond|jfmamjjasond|jfmamjjasond 

<384 1985 1986 1 1987 

SIMULATED FIRST ORDER AND YIELD-BASED P UPTAKES 
CONVENTIONAL T ILLAGE (PERLND 192), SHENANDOAH BASIN 



FIRST-ORDER UPTAKE 
YIELD-BASED UPTAKE 


J F M AM J J A S 0 N D|J F II A II J J A SO N D IJ F M A M J J A S 0 N 0 |j F M A M J J A S 0 N D 
1984 1985 1986 1987 


Figure 5. Comparison of first-order and yield-based plant uptake options for 
conventional tillage in the Shenandoah model segment 






OV/81 NI N 


THE SHENANDOAH MODEL SEGMENT, 1984-91 








Table 6. Impacts of Changes in Application Rates for Conventional Tillage 
in the Upper Shenandoah Model Segment 190. 1984-87 (lb/ac) 



Conventional 

20 % 

20% 

20% Decrease 

Runoff Losses 

Tillage 

Increase 

Decrease 

with Org N/P 
Converted to NH 3 /PO. 

no 3 

15.09 

23.26 

9.62 

18.73 

nh 3 

3.63 

4.23 

3.04 

5.10 

Org N 

5.03 

5.10 

4.96 

4.69 

Total N 

23.75 

32.59 

17.62 

28.52 

P0 4 

2.14 

2.68 

1.69 

2.81 

Org P 

1.40 

1.42 

1.38 

1.31 

Total P 

3.54 

4.10 

3.07 

4.12 

Plant Uptake 

N 

133.9 

137.4 

115.4 

132.6 

P 23.6 

Nutrient Applications 

23.7 

23.4 

23.7 

N 

213.8 

256.5 

171.7 

171.7 

no 3 

29.1 

34.9 

23.3 

23.3 

nh 3 

127.9 

153.5 

102.9 

148.4 

Org N 

56.8 

68.1 

45.5 

0.0 

P 

59.1 

70.9 

49.4 

49.4 

P0 4 

43.8 

52.5 

37.2 

49.4 

Org P 

15.3 

18.4 

12.2 

0.0 


Chapter 3 


Testing the New Yield-Based AGCHEM Plant Uptake Routine 


33 



with the 20% reduction, the plant available P (i.e. P0 4 ) is still about 37 lb/ac and is 
adequate to meet the plant needs. 

To confirm this behavior, the 20% reduction condition was redone with all organic N 
and P converted to NH 3 and P0 4 . As shown in the last column in Table 6, 
conversion of the organics results in plant uptake returning to the desired levels. This 
demonstrates that the yield-based function will attempt to meet target demands, 
but that the nutrients must be in a plant available form. Otherwise, a nutrient 
stress condition will result and will lead to deficit conditions with uptake less than 
needed. Nutrient management efforts will need to consider alternative scenarios of 
changes in fertilizer and manure applications in order to ensure that sufficient plant 
available nutrients are applied to meet crop needs. 

Sensitivity to Nutrient Target Rates 

Table 7 shows the impact of a 20% increase and decrease in the N and P target rates 
for the Conventional Tillage land use in the Shenandoah model segment 190. The 
target rates used in these runs were as follows: 

N and P Target Uptake Rates (lb/ac) 

Base Condition 20 % Increase 20% Decrease 

N 145 174 116 

P 25 30 20 

The 20% increase leads to a smaller increased uptake than the target increase due to 
the limiting impact of the available plant nutrients, even though total applications are 
sufficient to meet the target levels. The 20 % decrease in target levels leads to plant 
uptake levels reduced by almost the same percentage for N and the identical 20% 
decrease for P. In this case, there are sufficient plant available nutrients to meet the 
lower demand, and the result is significantly greater runoff amounts - almost 30% 
greater for N and almost 10% greater for P. These runs also demonstrate that the 
target levels are effectively maximum, or optimum levels, that are not fully satisfied 
in these simulations. Moisture stress in the surface layer, nutrient stress associated 
with the uptake occurring from the solution form of NH 3 and P0 4 , and the defined 
distribution of the uptake target between NH 3 and N0 3 all lead to uptake levels 
somewhat below the target. Thus, target levels should be set to 10% to 20% above 
desired uptake levels based on our experience in this effort. 

Conclusions and Recommendations 
Conclusions 

The addition of a yield-based plant uptake option in the AGCHEM module of HSPF, 
derived from the NLEAP uptake formulation, provides an improved algorithm for 
representing the plant uptake component of nutrient balances for agricultural 
croplands. The new algorithm allows for direct consideration of expected plant yield 
levels for both N and P, seasonal distribution of uptake rates and multiple cropping 
periods, N fixation by leguminous plants, and stress conditions related to available 


34 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 



nutrient levels and moisture conditions. Nutrient deficit state conditions are assessed 
and enhanced uptake is allowed when additional nutrients become available. In this 
option, soil temperature is only considered as a threshold as uptake is stopped below 
4°C. High temperatures leading to low moisture conditions are indirectly considered 
when uptake is inhibited below soil wilting point levels. 

Testing of the algorithm shows that it is sensitive to the available plant nutrients in the 
soil layers and to the target levels defined by the user corresponding to expected crop 
yields. The formulation is definitely less sensitive than the first-order option to 
nutrient application rates. Increasing application rates results in increased uptake but 
only up to the user-defined target levels; whereas, when application rates are 
decreased, the algorithm attempts to still meet the defined target levels, subject to the 
simulated stress conditions. Our testing has shown that decreased application rates 
will allow uptake levels to remain unchanged only if the plant available nutrients 
(from applications, atmospheric deposition, and mineralization) are sufficient to satisfy 
plant needs. This has important implications for agricultural BMPS that include 
nutrient reduction components. 

Recommendations 


Although all components and capabilities of the new yield-based plant uptake option in 
AGCHEM have been tested for proper operation, not all have been tested under site 
and crop specific conditions. The ’composite crop’ employed in the CBP Watershed 
Model, derived from parameters weighted by cropping distributions within each model 
segment, precluded detailed testing for individual crops and small-scale field 
conditions. Further testing at this level is recommended for evaluation of N fixation 
by leguminous crops, multiple cropping conditions, uptake timing and plant nutrient 
levels, and representation of stress conditions (i.e. nutrient and moisture). Small 
instrumented field sites, such as those in the Patuxent Basin (R. Summers, personal 
communication, 1994), the Nomini Creek/Owl Run sites in Virginia, the Conestoga 
basin in PA, and U.S.D.A. sites in Walnut Creek, IA should be considered for future 
testing and evaluation of the new yield-based algorithm. 


Chapter 3 Testing the New Yield-Based AGCHEM Plant Uptake Routine 


35 



Table 7. Impacts of Changes in Nutrient Target Rates for Conventional 

Tillage in the Upper Shenandoah Model Segment 190. 1984-87 
(Ib/ac) 



Conventional 

20 % 

20% 


Tillage 

Increase 

Decrease 

Runoff Losses 

no 3 

15.09 

11.70 

21.98 

nh 3 

3.63 

3.64 

3.64 

Org N 

5.03 

5.03 

5.03 

Total N 

23.75 

20.37 

30.64 

P0 4 

2.14 

2.00 

2.30 

Org P 

1.40 

1.40 

1.40 

Total P 

3.54 

3.40 

3.70 

Plant Uptake 

N 

133.9 

137.9 

110.6 

P 

23.6 

21A 

18.9 

Nutrient Applications 

N 

213.8 

213.8 

213.8 

no 3 

29.1 

29.1 

29.1 

nh 3 

127.9 

127.9 

127.9 

Org N 

56.8 

56.8 

56.8 

P 

59.1 

59.1 

59.1 

P0 4 

43.8 

43.8 

43.8 

Org P 

15.3 

15.3 

15.3 


36 


Chapter 3 Testing of the New Yield-Based AGCHEM Plant Uptake Routine 



4 Testing and Calibration of the 
Refined Watershed Model 


Model Testing Procedures 

Testing and calibration of the refined Watershed Model for the three selected test 
segments involved: 

a. Review and evaluation of the AGCHEM cropland simulations 

b. Review and comparison of nonpoint source loadings from all land use 
categories 

c. Calibration of selected instream water quality parameters based on comparison 
of simulated and observed concentrations 

The refined Watershed Model resulting from this effort for the three test segments 
differs from the earlier Phase II Watershed Model in the following ways: 

a. Land use was updated by CBPO to 1990 conditions (Neumiller at al. 1994) 

b. Selected model segments were re-defined for finer spatial detail 

c. Precipitation and meteorologic data was reviewed and extended through 1991 

d. Point sources, diversion, and atmospheric deposition files were extended 
through 1991 

e. The yield-based plant uptake function was used in AGCHEM 

f. Enhanced SPECIAL ACTIONS capabilities were used to reduce the length of 
the model input and improve representation of chemical application practices 

g. Atmospheric deposition was included as timeseries directly input to chemical 
storages for the AGCHEM segments, taking advantage of additional HSPF 
Version No. 1 capabilities 

In addition, as part of the water quality calibration, benthic oxygen demand and 
benthic algae processes were activated within HSPF in order to improve the low DO 
and inorganic nutrient simulation. These processes had been included in earlier 
versions of HSPF but had not been ’turned on’ due to the focus of developing loads to 
the Bay versus local water quality conditions within model segments. 

In spite of these many differences, the two versions are essentially similar with the 
refined version extending the simulation through 1991 and incorporating a number of 
refinements that have helped to improve the simulations and its utility for evaluating 
nutrient management. 


Chapter 4 Testing and Calibration of the Refined Watershed Model 


37 



Nonpoint Source and Loading Assessment 

The loading assessment involved reviewing the contaminant loadings for each 
constituent for each source, including nonpoint sources, point sources, and 
atmospheric deposition. Table 8 and 9 are key tools in this assessment; Table 8 
shows the unit area (per acre) loads for each land use simulated in the Watershed 
Model for each of the model test segments, while Table 9 shows the ’percent of total 
load’ derived from each source. These tables show only the mean values for the eight 
year simulation period, with the complete results provided in the Appendices. 

Table 8 allows the model user to assess validity and reasonability of the unit area 
loading values by comparing them to ’expected’ or generally accepted values, or 
ranges of values, from the literature. Table 9 allows the user to determine the relative 
distribution and contributions of each load source to each stream reach in the 
Watershed Model. Judicious and careful analysis of these two types of tables for each 
model segment allows the user to evaluate both the validity of the loading sources and 
identify those sources that may need to be re-evaluated in order to improve or refine 
the comparison between simulated and observed instream concentrations. 

In this study, the nonpoint loading assessment involved two primary components. The 
first involved the evaluation and analysis of the AGCHEM results using the new 
yield-based plant uptake function. Uptake targets, nutrient application rates, and 
simulated plant uptake amounts for both N and P were reviewed and evaluated to 
ensure consistency and reasonability of the results. Uptake targets were derived from 
the expected uptake amounts for each crop and the cropping distributions within each 
model segment as described in the Phase II report (Donigian et al. 1994). The 
simulated plant uptake was then compared to the targets, by assessing the calculated 
deficits, and to the nutrient application rates for each segment to ensure that crop 
needs were being satisfied. Some adjustments were required to the new yield-based 
parameters (described in Chapter 2) to adjust the simulated uptake to the proper 
levels; the primary adjustments were to the uptake targets, the monthly distribution 
factors, and the soil layer fractions. Thus the plant uptake was the primary criteria 
for the AGCHEM parameter changes. The remaining AGCHEM parameters are 
essentially the same as those derived in the Phase II effort. 

The second component involved a review and relative comparison of the nonpoint 
loading rates for all the land uses, and an assessment of the relative load contributions 
as derived from the information in Table 9. The key outcome of the loading rate 
comparison was the identification of the relatively high loading rates of N0 3 from the 
forest segment. In comparison with selected datasets for forested watershed sites, 
Hunsaker, Garten, and Mulholland (1994) noted that the N0 3 loading rates used in 
the Watershed Model were up to ten times greater in the Susquehanna than indicated 
by measured data, and up to five times greater in other model segments. The model 
values were in typically in the range of 1.0 to 6.0 lb/ac/year, whereas the measured 
data were in the range of 0.5 to 2.0 Ib/ac/yr. Therefore in this effort we adjusted the 
forest segment parameters, primarily decreasing the subsurface N0 3 concentrations, to 
reduce the model generated forest loads to the general range of 1.0 to 2.0 lb/ac/yr. 


38 


Chapter 4 Testing and Calibration of the Refined Watershed Model 



Table 8. Unit Area Nonpoint Source Loading Rates for Each Land Use for 
the Test Model Segments 


CONSTITUENT 


Pervious 


SEGMENT 50 


SEGMENT 60 


SEGMENT 70 


SEGMENT 190 


SEGMENT 200 


SEGMENT 210 



FOR 

HTC 

NH3 

0.145 

5.597 

N03 

2.188 

15.799 

ORGN 

0.182 

1.015 

TN 

2.514 

22.413 

P04 

0.012 

0.858 

ORGP 

0.026 

0.282 

TP 

0.038 

1.140 

BOD 

4.894 

32.333 

SED 

0.038 

0.319 

NH3 

0.126 

4.111 

N03 

1.889 

18.643 

ORGN 

0.164 

1.325 

TN 

2.178 

24.076 

P04 

0.010 

0.760 

ORGP 

0.023 

0.368 

TP 

0.033 

1.127 

BOD 

4.414 

40.549 

SED 

0.039 

0.421 

NH3 

0.124 

3.495 

N03 

1.850 

15.113 

ORGN 

0.195 

2.578 

TN 

2.170 

21.186 

P04 

0.009 

0.663 

ORGP 

0.028 

0.715 

TP 

0.037 

1.378 

BOD 

5.264 

36.323 

SED 

0.041 

0.795 

NH3 

0.055 

3.930 

N03 

1.412 

17.101 

ORGN 

0.358 

3.822 

TN 

1.825 

24.854 

P04 

0.025 

2.371 

ORGP 

0.051 

1.063 

TP 

0.076 

3.434 

BOD 

2.898 

98.213 

SED 

0.071 

1.067 

NH3 

0.040 

2.849 

N03 

1.103 

12.777 

ORGN 

0.233 

2.440 

TN 

1.375 

18.063 

P04 

0.005 

1.812 

ORGP 

0.033 

0.687 

TP 

0.038 

2.499 

BOD 

1.881 

56.805 

SED 

0.053 

0.702 

NH3 

0.054 

2.039 

N03 

1.716 

8.960 

ORGN 

0.117 

1.434 

TN 

1.888 

12.434 

P04 

0.005 

1.014 

ORGP 

0.017 

0.397 

TP 

0.022 

1.411 

BOD 

3.165 

36.270 

SED 

0.013 

0.434 


LTC 

PAS 

URB 

6.180 

0.313 

0.503 

18.687 

7.641 

10.265 

0.697 

0.580 

1.726 

25.564 

8.534 

12.494 

0.938 

0.044 

0.147 

0.186 

0.083 

0.247 

1.124 

0.127 

0.393 

16.613 

15.645 

46.525 

0.180 

0.091 

0.130 

4.259 

0.285 

0.451 

19.816 

7.010 

9.559 

0.955 

0.910 

1.544 

25.031 

8.205 

11.554 

0.847 

0.040 

0.134 

0.255 

0.130 

0.221 

1.102 

0.170 

0.354 

20.854 

24.525 

41.613 

0.247 

0.123 

0.146 

3.321 

0.286 

0.460 

15.317 

7.368 

10.058 

2.003 

0.627 

1.489 

20.639 

8.281 

12.006 

0.737 

0.039 

0.130 

0.534 

0.090 

0.213 

1.272 

0.129 

0.342 

18.146 

16.913 

40.125 

0.497 

0.143 

0.147 

3.679 

0.079 

0.321 

14.407 

5.059 

5.790 

3.249 

0.907 

2.083 

21.336 

6.045 

8.194 

2.114 

0.043 

0.270 

0.870 

0.130 

0.298 

2.984 

0.173 

0.568 

57.548 

7.331 

16.845 

0.739 

0.199 

0.162 

2.690 

0.066 

0.235 

10.813 

4.219 

4.675 

1.735 

0.738 

1.473 

15.237 

5.022 

6.384 

1.631 

0.035 

0.190 

0.464 

0.105 

0.210 

2.095 

0.141 

0.400 

27.004 

5.967 

11.914 

0.401 

0.153 

0.172 

1.769 

0.087 

0.244 

8.451 

5.494 

6.995 

0.802 

1.475 

1.444 

11.022 

7.056 

8.682 

0.926 

0.047 

0.184 

0.214 

0.211 

0.206 

1.140 

0.258 

0.390 

17.993 

39.763 

38.913 

0.197 

0.157 

0.140 



><-Impervious--- 

■> Total 

HAY 

ANML 

URB 

Load 

1.956 

284.740 

1.038 

0.392 

16.798 

71.185 

2.161 

3.811 

0.282 

1708.438 

3.720 

0.416 

19.038 

2491.472 

6.920 

4.639 

1.194 

71.185 

0.479 

0.085 

0.076 

284.740 

0.531 

0.066 

1.269 

498.294 

1.010 

0.157 

9.840 

4982.944 

30.083 

8.864 

0.119 

0.000 

0.000 

0.055 

1.184 

234.852 

1.229 

0.362 

14.981 

58.713 

3.108 

3.537 

0.366 

1409.115 

3.627 

0.384 

16.533 

2054.959 

7.963 

4.306 

0.725 

58.713 

0.630 

0.084 

0.098 

234.852 

0.518 

0.065 

0.823 

410.992 

1.148 

0.156 

12.203 

4109.917 

29.329 

7.864 

0.151 

0.000 

0.000 

0.062 

1.418 

246.166 

1.530 

0.915 

14.581 

61.541 

3.313 

6.098 

0.731 

1476.996 

3.591 

0.901 

16.731 

2153.952 

8.433 

7.958 

0.926 

61.541 

0.742 

0.249 

0.198 

246.166 

0.513 

0.198 

1.123 

430.790 

1.255 

0.461 

12.439 

4307.904 

29.036 

12.418 

0.281 

0.000 

0.000 

0.187 

0.644 

219.611 

1.041 

0.531 

3.373 

54.903 

2.289 

3.809 

1.262 

1317.666 

3.289 

1.531 

5.278 

1921.596 

6.620 

6.004 

0.965 

54.903 

0.465 

0.349 

0.348 

219.611 

0.470 

0.284 

1.312 

384.319 

0.935 

0.678 

24.440 : 

3843.192 

26.599 

14.399 

0.451 

0.000 

0.000 

0.205 

0.365 

183.384 

1.350 

0.343 

2.704 

45.846 

2.471 

2.908 

0.763 

1100.306 

3.234 

0.991 

3.832 

1604.613 

7.055 

4.331 

0.660 

45.846 

0.460 

0.221 

0.208 

183.384 

0.462 

0.178 

0.868 

320.923 

0.922 

0.429 

21.694 3209.225 

26.153 

9.253 

0.276 

0.000 

0.000 

0.136 

0.353 

222.020 

1.389 

0.713 

3.045 

55.505 

2.974 

4.577 

0.430 1665.151 

3.097 

1.295 

3.827 1942.676 

7.459 

6.585 

0.511 

55.505 

0.645 

0.393 

0.116 

333.030 

0.442 

0.261 

0.627 

388.535 

1.087 

0.654 

16.860 3885.352 

25.043 

18.798 

0.162 

0.000 

0.000 

0.127 


Chapter 4 Testing and Calibration of the Refined Watershed Model 


39 






Table 8. Unit Area Nonpoint Source Loading Rates for Each Land Use for the Test Model 
Segments (Continued) 


CONSTITUENT <.Pervious.><-Impervious---> Total 




FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

URB 

Load 

SEGMENT 750 

NH3 

0.056 

2.421 

2.044 

0.096 

0.278 

0.392 

241.333 

1.403 

0.812 


N03 

1.794 

8.384 

8.522 

5.448 

6.934 

3.301 

60.333 

3.004 

4.723 


ORGN 

0.178 

2.265 

1.292 

1.853 

1.804 

0.655 

1809.997 

3.128 

1.431 


TN 

2.028 

13.071 

11.860 

7.396 

9.015 

4.348 

2111.663 

7.535 

6.966 


P04 

0.008 

1.107 

1.019 

0.056 

0.230 

0.580 

60.333 

0.652 

0.446 


ORGP 

0.025 

0.628 

0.345 

0.265 

0.258 

0.178 

362.000 

0.447 

0.299 


TP 

0.033 

1.735 

1.363 

0.321 

0.488 

0.757 

422.333 

1.099 

0.745 


BOO 

4.789 

54.840 

25.496 

49.938 

48.613 

24.199 

4223.327 

25.298 

25.394 


SED 

0.026 

0.680 

0.314 

0.200 

0.184 

0.241 

0.000 

0.000 

0.200 


40 


Chapter 4 Testing and Calibration of the Refined Watershed Model 






Table 9. Percent of Total Load Contributed from Each Source for the Test Model Segments 


CONSTITUENT <. 

FOR HTC 


SEGMENT 50 NH3 12.54 12.22 



N03 

45.23 

8.22 


ORGN 

32.12 

4.52 


TN 

38.19 

8.57 


P04 

4.56 

8.41 


ORGP 

24.01 

6.56 


TP 

10.09 

7.68 


BOO 

39.66 

6.59 


SED 

55.58 

11.78 

SEGMENT 

60 NH3 

19.25 

16.91 


N03 

43.39 

11.52 


ORGN 

31.36 

6.82 


TN 

39.22 

11.66 


P04 

5.09 

10.39 


ORGP 

24.82 

10.49 


TP 

11.14 

10.10 


BOD 

45.29 

11.19 


SED 

53.50 

15.37 

SEGMENT 

70 NH3 

5.35 

25.26 


N03 

17.92 

24.59 


ORGN 

11.52 

25.54 


TN 

15.05 

24.69 


P04 

1.01 

12.02 


ORGP 

6.83 

29.37 


TP 

2.74 

17.03 


BOD 

24.43 

28.33 


SED 

13.64 

44.79 


SEGMENT 

190 NH3 

1.66 

5.29 


N03 

17.98 

9.70 


ORGN 

10.66 

5.06 


TN 

12.34 

7.48 


P04 

2.03 

8.52 


ORGP 

7.59 

7.02 


TP 

3.81 

7.63 


BOD 

9.07 

13.69 


SED 

17.08 

11.46 

SEGMENT 

200 NH3 

2.22 

5.51 


N03 

25.22 

9.06 


ORGN 

7.25 

6.65 


TN 

16.86 

7.74 


P04 

0.36 

10.19 


ORGP 

5.03 

9.08 


TP 

1.75 

9.34 


BOD 

6.06 

13.22 


SED 

9.40 

18.09 

SEGMENT 

210 NH3 

1.17 

7.64 


N03 

11.98 

10.86 


ORGN 

2.71 

5.75 


TN 

8.11 

9.27 


P04 

0.29 

9.49 


ORGP 

1.97 

8.12 


TP 

0.82 

9.06 


BOO 

5.21 

10.38 


SED 

3.85 

21.90 


---Kervi 

LTC 

OUS. 

PAS 

URB 

HAY 

3.44 

2.84 

2.41 

6.29 

2.48 

16.52 

11.73 

12.87 

0.79 

10.73 

16.87 

1.85 

2.50 

13.56 

10.49 

10.73 

2.34 

1.79 

3.16 

17.22 

1.11 

8.02 

12.62 

2.60 

1.93 

3.55 

5.83 

12.61 

0.86 

13.26 

20.84 

2.96 

1.70 

13.90 

10.55 

6.48 

11.66 

2.71 

1.22 

9.91 

8.15 

10.02 

3.88 

18.85 

3.27 

10.84 

5.22 

3.84 

8.06 

9.19 

3.67 

16.29 

7.70 

1.26 

1.20 

20.17 

4.84 

8.58 

4.13 

5.70 

6.57 

3.52 

2.09 

15.02 

3.83 

15.65 

7.54 

6.86 

6.01 

10.41 

3.50 

11.22 

16.98 

1.05 

0.69 

10.28 

17.64 

6.10 

3.41 

23.80 

14.04 

3.16 

3.07 

7.26 

17.02 

4.91 

2.91 

19.56 

9.45 

0.36 

0.49 

16.82 

15.54 

1.87 

1.82 

8.14 

11.12 

0.81 

0.88 

13.93 

10.02 

6.71 

6.51 

9.73 

19.81 

4.10 

1.73 

15.91 


11.49 

1.06 

1.40 

4.69 

18.95 

28.42 

10.62 

10.36 

9.99 

11.91 

8.93 

9.06 

14.90 

18.04 

7.98 

8.61 

17.63 

1.55 

3.14 

18.77 

13.34 

8.48 

6.36 

12.44 

15.38 

3.81 

4.09 

15.80 

18.62 

10.13 

7.60 

18.48 

18.42 

21.19 

5.64 

26.23 

7.29 

1.25 

0.76 

4.23 

9.02 

35.38 

8.09 

10.14 

7.11 

13.30 

4.72 

8.87 

8.18 

23.77 

5.82 

8.49 

12.12 

1.50 

1.21 

31.10 

9.21 

9.23 

3.27 

11.53 

10.63 

3.76 

1.78 

23.63 

8.81 

11.11 

3.95 

18.79 

15.46 

23.00 

3.92 

30.12 

21.91 

0.67 

0.58 

3.34 

33.84 

13.75 

5.41 

9.33 

10.63 

12.22 

3.70 

4.36 

27.15 

10.86 

4.13 

7.21 

28.62 

0.92 

1.10 

12.09 

14.44 

8.90 

2.69 

6.00 

24.17 

3.42 

1.60 

10.18 

17.01 

23.49 

7.11 

12.19 

32.76 

16.33 

4.50 

20.64 


><----Impervious- 

---> Point 

Total 

ANML 

URB 

Source Load 

1.44 

0.90 

57.91 

100.00 

0.09 

0.45 

2.43 

100.00 

17.65 

6.59 

8.90 

100.00 

2.21 

1.05 

12.69 

100.00 

1.62 

1.87 

59.07 

100.00 

15.40 

4.93 

24.77 

100.00 

7.80 

2.71 

47.80 

100.00 

2.36 

2.44 

11.02 

100.00 

0.00 

0.00 

0.00 

100.00 

2.78 

1.33 

25.12 

100.00 

0.10 

0.51 

3.59 

100.00 

20.87 

4.92 

12.84 

100.00 

2.86 

1.02 

8.05 

100.00 

2.31 

2.27 

49.61 

100.00 

19.27 

3.89 

18.27 

100.00 

10.60 

2.71 

38.26 

100.00 

3.26 

2.13 

4.26 

100.00 

0.00 

0.00 

0.00 

100.00 

1.99 

1.16 

37.25 

100.00 

0.11 

0.57 

5.87 

100.00 

16.34 

3.74 

15.32 

100.00 

2.80 

1.03 

12.01 

100.00 

1.24 

1.41 

57.19 

100.00 

11.29 

2.22 

22.90 

100.00 

5.94 

1.63 

45.92 

100.00 

3.75 

2.38 

8.10 

100.00 

0.00 

0.00 

0.00 

100.00 


5.44 

1.33 

67.63 

100.00 

0.57 

1.23 

2.16 

100.00 

32.14 

4.13 

8.11 

100.00 

10.65 

1.89 

18.11 

100.00 

3.63 

1.59 

43.14 

100.00 

26.71 

2.95 

15.11 

100.00 

15.72 

1.97 

31.77 

100.00 

9.87 

3.52 

9.02 

100.00 

0.00 

0.00 

0.00 

100.00 

5.33 

2.30 

71.12 

100.00 

0.47 

1.50 

1.10 

100.00 

40.75 

7.04 

4.30 

100.00 

9.97 

2.58 

16.60 

100.00 

3.85 

2.27 

37.40 

100.00 

32.98 

4.88 

14.80 

100.00 

17.45 

2.95 

28.70 

100.00 

12.28 

5.88 

19.90 

100.00 

0.00 

0.00 

0.00 

100.00 

4.68 

1.84 

58.17 

100.00 

0.38 

1.27 

13.16 

100.00 

37.54 

4.39 

18.67 

100.00 

8.14 

1.97 

23.14 

100.00 

2.92 

2.13 

42.43 

100.00 

38.27 

3.20 

16.37 

100.00 

14.02 

2.47 

34.25 

100.00 

6.25 

2.53 

15.82 

100.00 

0.00 

0.00 

0.00 

100.00 


Chapter 4 Testing and Calibration of the Refined Watershed Model 


41 





Table 9. Percent of Total Load Contributed from Each Source for the Test Model 
Segments (Continued) 


><-Impervious-> Point Total 

URB Source Load 


CONSTITUENT <— 
FOR 

SEGMENT 750 NH3 1.54 

N03 12.23 

ORGN 3.90 

TN 8.86 

P04 0.57 

ORGP 2.86 

TP 1.47 

BOO 6.09 

SED 4.51 


Pervious 


HTC 

LTC 

PAS 

12.98 

36.22 

1.06 

11.16 

37.48 

14.97 

9.71 

18.30 

16.40 

11.16 

33.45 

13.04 

15.62 

47.50 

1.63 

13.84 

25.12 

12.04 

14.92 

38.75 

5.70 

13.61 

20.91 

25.60 

22.81 

34.80 

13.87 


URB 

HAY 

ANML 

0.86 

5.31 

4.53 

5.32 

11.11 

0.28 

4.46 

7.10 

27.16 

4.44 

9.39 

6.31 

1.87 

20.67 

2.98 

3.27 

9.90 

27.92 

2.42 

16.47 

12.72 

6.96 

15.19 

3.67 

3.57 

20.43 

0.00 


2.58 

34.93 

100.00 

1.37 

6.07 

100.00 

4.61 

8.38 

100.00 

2.21 

11.13 

100.00 

3.16 

6.01 

100.00 

3.38 

1.16 

100.00 

3.25 

4.31 

100.00 

2.16 

5.82 

100.00 

0.00 

0.00 

100.00 


42 


Chapter 4 Testing and Calibration of the Refined Watershed Model 





The only other adjustments were to NH 3 loads from pasture, which were generally 
quite low in Phase II, and BOD loads in selected segments, when the adjustments 
were indicated by the assessment of the instream water quality simulation. With these 
few exceptions, the NPS loading simulation was essentially the same as in Phase II. 

Water Quality Calibration Results 

Following the loading assessment, water quality calibration involved adjustment of 
selected instream parameters to improve the overall comparison between observed and 
simulated concentrations. As noted above, the simulation of benthic oxygen demand 
and benthic algae were activated in this effort as part of the water quality calibration. 
These processes provided additional mechanisms impacting the instream simulation. 
The primary focus of the calibration was on maintaining reasonable levels of 
phytoplankton and benthic algae, since no observed data was available, and adjusting 
the related parameters so that the nutrients, both organic and inorganic, followed the 
observed variation. Periods of no phytoplankton, noted in the Phase II simulations, 
were eliminated with changes to the temperature adjustment and nutrient limitation 
parameters, benthic algae levels were established and adjusted, and the settling 
parameters controlling the organics were calibrated. 

Complete simulation results, in the form of eight-year timeseries plots of daily 
simulated concentrations and the sporadic observed data are provided in the 
Appendices; the results for the Shenandoah segments, West Branch Susquehanna 
segments, and Monocacy segments are included in Appendices A, B, and C, 
respectively. The extent and volume of the results precludes duplication as part of 
this discussion, so the reader should refer to the results in the appendices to better 
comprehend the results discussion below. 

Shenandoah Model Results 

Figures 7 through 11 show the simulated results and observed data for the inorganic 
nutrients (N0 3 , NH 3 , and P0 4 ) along with the Total N and Total P for the Shenandoah 
River at Millville, WV (model segment 200) as examples of the model results. 

Based on the results for all three model subbasins, the following conclusions and 
recommendations are provided: 

a. The overall results show a significant improvement from the Phase II effort 
with improved seasonal variation and tracking of the observed values. 

However, problems still remain for selected constituents, and further ’fine 
tuning’ of the calibration is recommended along with more detailed 
investigations into the algal simulation. 

b. The addition of a benthal oxygen demand significantly improved the DO 
simulation during low flow periods that were typically over estimated in the 
Phase II results. This was an early indicator of the potential importance of the 
benthal processes on the overall water quality simulation. 


Chapter 4 Testing and Calibration of the Refined Watershed Model 


43 


c. The N0 3 simulations show good agreement with the observed data, as shown 
in Figure 7 for the Shenandoah. The seasonal variation is well represented 
for most years, but occasional peaks are well above the observed data. This 
is typical of most of the simulation results, and may be due to the relatively 
large model segments and long stream reaches used in the Watershed Model. 
However, the observed data is relatively infrequent (about every two months) 
and one sample point exceeding 9.0 mg/1 N0 3 -N in the summer of 1986 
indicates that much higher concentrations are possible. 

d. Both the NH 3 and P0 4 simulations (Figures 8 and 9) are generally higher 
than the observed data points, but mostly in the overall range of the observed 
data. Both of these constituents are highly sensitive to the algal simulation 
(phytoplankton and benthic algae), for which no data was available for any of 
the test model segments. This is probably the greatest data need at this time; 
additional instream algal data would help to assess the validity of the 
phytoplankton (and benthic algae) simulation and its impact on the inorganic 
nutrient simulations. 

It should be noted that for the Shenandoah, the greatest fraction of the total 
loads for both NH 3 and P0 4 are derived from point sources. For NH 3 , 67% 
to 70%, on the average is derived from point sources, and up to 80% in some 
years. For P0 4 , the range is 30% to 43%, and up to 60% in some years. 
Thus, although the concentration peaks in Figures 8 and 9 are likely due to 
nonpoint sources, the point sources are major contributors to the total load. 

e. The Total N and Total P results in Figures 10 and 11 demonstrate behavior 
similar to that noted above. The Total N results are quite good and track the 
observed data with reasonable accuracy, while the Total P results are 
somewhat high. 

f. The organic components (not shown here, but included in the Appendices) 
follow this pattern i.e. the Organic N is similar to the observed while the 
Organic P is somewhat high, leading to the differences shown to the totals. In 
our simulations, 30% to 40% of the organics is derived from the animal waste 
model segment. Also, the organic loads from the non-AGCHEM segments 
are derived from the BOD simulation with the conversion to organic N and P 
based on algal stoichiometry as derived in Phase II. It is clear that the BOD- 
organics conversion factors could be adjusted to improve the organic P 
simulation without greatly deteriorating the organic N simulation. However, 
both the animal waste loading representation and the alga] N/P ratios should 
be further investigated in a joint effort to improve the organic simulation. 

West Branch Susquehanna and Monocacy Model Results 

Many of the same issues noted in the Shenandoah simulations are also observed in the 
model results for the West Branch Susquehanna River site, at Lewisburg, PA. 

Figures 12 and 13 show the model simulations and observed data for Total N and 
Total P at this site; Appendix B includes complete results for the West Branch 


44 


Chapter 4 Testing and Calibration of the Refined Watershed Model 



Susquehanna River. It is interesting to note that the Susquehanna N results show a 
dip in the simulated curve in the late summer/early fall for a few years that appears to 
be due to loading reductions that are not observed in the data. The N0 3 curves in 
Appendix B show this more dramatically. This could be due to an underestimate of N 
application rates, since they appear to be somewhat lower in the Susquehanna model 
segments, or accelerated crop uptake leading to depletion by the end of the growing 
season. Further investigations are needed. 

The Monocacy model results show significant deviations between observed and 
simulated values for most of the nutrient constituents, and further investigation and 
calibration is recommended. Using model parameters similar in value to those used 
on the other two test segments produced concentration peaks four to five times greater 
than observed. However, limited observed data for only 27 months in 1989-91 was 
available for calibration for the upper segment (No. 750) which was added as an 
additional segment in Phase III. Figures 14 and 15 show the Total N and Total P 
simulations for the Monocacy River at Bridgeport, MD, with complete results 
provided in Appendix C. 

Some observations and recommendations are as follows: 

a. Except for the inorganic nutrients, the Monocacy results are generally 
consistent with the level of agreement shown in the other test segments. 

Flow, sediment, water temperature, DO, BOD, TOC, Chi a, and benthic 
algae are all consistent with the other results, and show generally good 
agreement when observed data is available. 

b. The organics show the same behavior as in the other watersheds i.e. organic 
N is within reasonable agreement the limited data and organic P is generally 
high. As noted above, further investigation into the organics and BOD 
loadings and simulations are needed. 

c. Concentrations peaks for the inorganic nutrients are high in spite of the loads 
from the agricultural land uses being in the lower end of the expected range. 
Loadings from the other land uses are all reasonable, so the high peaks remain 
a mystery needing further analysis and calibration, hopefully with more data. 

It should be noted that 1993 data near the downstream site near Fredericks, 

MD showed a Total N exceeding 6.0 mg/1, based on monthly grab samples, 
so the peak concentrations shown in Figure 14, for the smaller upstream site 
are not unreasonable, especially for intensive agricultural areas. 

d. It should be noted that Segment 750 is the smallest of the Above Fall Line 
segments, and many of the watershed characteristics and parameters were 
based on the entire Phase II Segment 210 which included the new Segment 
750 in the upper reaches of the watershed. Watersheds of this size, with low 
flows often less than 10 cfs, require more detailed spatial information in order 
to represent their behavior. Future efforts should review the land use, slopes, 
agricultural practices, and applications rates for this small watershed to assess 
the accuracy of the model input values. 


Chapter 4 Testing and Calibration of the Refined Watershed Model 


45 



e. Some limited water quality observations at the downstream site, along with 
continuous sediment data was not available for this effort; they should be used 
for calibration in any future efforts on the Monocacy. 


46 


Chapter 4 Testing and Calibration of the Refined Watershed Model 



1 50000 



(SJO) MOli 


1/3W NI 0N03 N-£ON 


FIGURE 7. SIMULATED AND OBSERVED N03-N FOR SHENANDOAH RIVER (SEGME 
MILLVILLE, WV 








1 50000 



(SJD) M01J 


1/3H HI ONOD N-fHN 


SIMULATED AND OBSERVED NH3-N FOR SHENANDOAH RIVER (SEGME 
































1 50000 



FIGURE 10. SIMUUTEO AND OBSERVED TOTAL N FOR SHENANDOAH RIVER (SEGMENT 200) 





1 50000 



(SJO) MO 1J 


1/OH NI 3N00 d 1V101 


FIGURE 11. SIMULATEO AND OBSERVED TOTAL P FOR SHENANDOAH RIVER 

















O' 

UJ 

> 

or 


a 
co 


o 

-«c 

ad 

CD 


cn 

UJ 

3T 

cc: 



o CD 


cd m 
UJ CO 
>■ — 
or » 

UJ UJ 
CO _j 
cn 

<33 ►— 

< 


•< <=3 



ZD CD 
DE UJ 
— CO 
CO *s— 


CNJ 


(SJO) MO1J 


1/OH NI 0NO0 N IViOI 




200000 



1/3H N! d IViOi 


. SIMULATEO AND OBSERVED TOTAL P FOR WEST BRANCH SUSQUEHANNA RIVER 
(SEGMENT 70) AT LEWISBURG, PA 











1 5 000 



SIMULATED AND OBSERVED TOTAL N FOR MONOCACY RIVER (SEGMENT 750) 
BRIDGEPORT, MO 















1 5000 



{SJD} MOU 


1/3H NI ONOO d TYlOi 


FIGURE 15. SIMULATED AND OBSERVED TOTAL P FOR MONOCACY RIVER (SEGMENT 7501 AT 
BRIDGEPORT, MD ' ' 




















5 Representation of Nutrient 
Reduction Alternatives - 
A Demonstration 


To demonstrate the use of the Watershed Model for evaluating the impacts of 
alternative nutrient reduction practices, selected scenarios were developed and 
simulated for the Shenandoah model segments. These alternatives were an outgrowth 
of the sensitivity runs performed with the AGCHEM module using the yield-based 
plant uptake algorithm described in Chapter 3. These alternatives do not represent 
actual nor even recommended practices for the Shenandoah Basin; they are 
simply potential scenarios of model changes that are used to demonstrate and 
assess issues of concern in developing practices for evaluation. 

Alternative Scenarios 

Two alternative scenarios were developed and compared to the Base Conditions which 
were represented by the calibrated conditions on the Shenandoah Basin. The 
alternatives were designed to represent a potential range of conditions that would 
likely be of interest. The changes implemented for each alternative were as follows: 

Alternative #1: 

1. All cropland is represented as Conservation Tillage (CST), i.e. all 
Conventional Tillage (CNT) land is converted to CST 

2. No change in the amount of fertilizer applications on cropland or hay, but the 
timing was adjusted to better match the timing of crop needs 

3. A 70% reduction in manure application was implemented on both CST and 
HAY 

Alternative #2: 

1. Same changes as in 1 above 

2. A 40% reduction in fertilizer on CST and 10% reduction on Hay was 
implemented, along with the timing adjustments noted above 


56 


Chapter 5 Representation of Nutrient Reduction Alternatives - A Demonstration 





3. Mineralization rates were increased in the surface and upper soil layers to 
make more manure organics available for plant uptake 

The current version of the AGCHEM model used in this effort includes only one 
Organic N and one Organic P compartment which represents the soil organic material. 
Thus, it was not originally designed for use with manure applications that include 
organics that mineralize at a faster rate that the parent soil material. To partially 
compensate for this limitation, the Phase II effort assumed that 30% of manure 
organic N was readily mineralizable and was applied as NH 3 at the time of 
application. However, the remaining organic N applied as manure continues to 
mineralize at the basic rate of the soil organic N. The same procedures were applied 
in this study. 

Thus the two alternatives represent two opposite extremes. Alternative No. 1 reduces 
manure and maintains adequate plant available nutrients by applying fertilizer, while 
Alternative No. 2 reduces fertilizer (the preferred objective of nutrient management) 
and attempts to offset the loss of available nutrients by increasing the mineralization 
rate. The availability of the manure organics is an important issue if fertilizer 
reductions are to be offset by manure applications. 

Results of Alternative Simulations 

Tables 10 and 11 show the unit area impacts (i.e. lbs/ac) of the two alternatives as 
compared to the Base Conditions for both the Conservation Tillage and Hay model 
land use categories, respectively. These tables show the impacts on nutrient runoff 
losses, plant uptake, and the nutrient applications under each condition. A su mmar y 
comparison is provided in Table 12, which shows the mean annual loads for the Base 
Condition and each alternative for the 1984 through 1991 simulation period for the 
inorganics and total nutrients for the Shenandoah River at Millville, WV. 

For Conservation Tillage, the following observations are noted: 

a. Alternative No. 1 clearly shows the greatest reduction in runoff losses even 
though it receives the lowest application rates and plant uptake is reduced. 

Since the fertilizer is applied in plant available form (i.e. inorganics), it is 
more readily taken up by the crop, making less available for runoff than under 
Alternative No. 2 and the Base Condition. 

b. N uptake is reduced under Alternative No. 1 (by about 15%) but it is still in a 
reasonable range for expected yields for the composite crop. Out of the 131 
lb/ac of inorganic N applied, 121 was taken up by the crop leading to a 
relatively high fertilizer efficiency. Note that other components of the N 
balance, such as mineralization, immobilization, denitrification, etc. are not 
shown here but are tabulated in the summary output tables in the appendices. 


Chapter 5 Representation of Nutrient Reduction Alternatives - A Demonstration 


57 



Table 10. Impacts of Alternatives for Conservation Tillage in the Upper 
Shenandoah Model Segment 190, 1984-87 (Ib/ac) 



Base 

Alternative 

Alternative 


Conditions 

No. 1 

No. 2 

Runoff Losses 

no 3 

12.25 

7.37 

12.41 

nh 3 

3.58 

1.60 

2.71 

Org N 

4.37 

4.21 

4.32 

Total N 

20.21 

13.19 

19.43 

P0 4 

1.93 

0.70 

1.29 

Org P 

1.17 

1.12 

1.17 

Total P 

3.10 

1.83 

2.46 

Plant Uptake 

N 

143.1 

121.3 

143.8 

P 

23.3 

22.6 

23.0 

Nutrient Applications 

N 

217.3 

148.6 

168.9 

no 3 

30.1 

29.8 

17.9 

nh 3 

130.6 

101.7 

94.2 

Org N 

56.8 

17.1 

56.8 

P 

58.3 

36.8 

47.1 

P0 4 

43.0 

32.2 

31.8 

Org P 

15.3 

4.6 

15.3 


58 


Chapter 5 


Representation of Nutrient Reduction Alternatives - A Demonstration 


Table 11. Impacts of Alternatives for Hay Cropland in the Upper 
Shenandoah Model Segment 190, 1984-87 (Ib/ac) 

Base Alternative Alternative 

Conditions No. 1 No. 2 

Runoff Losses 


no 3 

3.40 

3.22 

3.24 

nh 3 

0.54 

0.47 

0.55 

Org N 

1.62 

1.61 

1.62 

Total N 

5:56 

5.30 

5.41 

P0 4 

0.90 

0.83 

0.83 

Org P 

0.45 

0.44 

0.44 

Total P 

1.35 

1.27 

1.27 

Plant Uptake 

N 

44.8 

43.0 

45.8 

P 

18.7 

18.5 

18.5 

Nutrient Applications 

N 

44.4 

33.8 

41.5 

no 3 

7.3 

7.3 

6.6 

nh 3 

28.3 

23.9 

26.1 

Org N 

8.8 

2.6 

8.8 

P 

30.8 

26.2 

28.4 

P0 4 

27.5 

25.2 

25.1 

Org P 

3.3 

1.0 

3.3 


Chapter 5 Representation of Nutrient Reduction Alternatives - A Demonstration 


59 



Table 12. Nutrient Loadings Comparison for Base Conditions and Two Alternatives 
for the Shenandoah River at Millville, WV 

MEAN ANNUAL LOADS FOR 1984 -91 


CONSTITUENT 

BASELINE 

LBS 

Alt. # 1 
LBS 

Alt. # 2 
LBS 

%CHANGE 
IN Alt. #1 
FROM 
BASELINE 

%CHANGE 
IN Alt. n 
FROM 
BASELINE 

nh 3 -n 

13590 

11541 

14301 

-15.1 

5.2 

no 3 -n 

199841 

143175 

167093 

-28.4 

-16.4 

TOTAL N 

288678 

238918 

266100 

-17.2 

-7.8 

P0 4 -P 

17995 

12171 

14342 

-32.4 

-20.3 

TOTAL P 

32025 

27653 

29992 

-13.7 

-6.4 


60 


Chapter 5 Representation of Nutrient Reduction Alternatives - A Demonstration 



c. Alternative No. 2 shows some reduction in runoff losses, and no significant 
change in plant uptake, due to added inorganic N available through the 
increased mineralization rates. This made more inorganic N available for 
both uptake and runoff. Note that the difference in the 143 Ib/ac taken up by 
the plant the 112 lb/ac inorganic N applied is derived from the increased 
mineralization. 

d. The impacts on P runoff are similar to those of N runoff, but the plant uptake 
of P is essentially the same for all three conditions. This results because more 
than enough P0 4 is applied to satisfy plant needs. 

For the Hay cropland, similar observations are evident but the differences among the 
three conditions are not as dramatic due to the lower application rates and plant 
uptake levels. The plant uptake is essentially the same for all three conditions for 
both N and P, and die N runoff shows the same ordering as did the Conservation 
Tillage segment. P runoff and uptake show little or no difference among the 
alternatives, since the overall P balance is not greatly disturbed by the relatively small 
changes in the P applications. 

The changes in total loads shown in Table 12 indicate that Alternative No. 1 leads to 
the greatest reduction in loads at the Shenandoah River watershed outlet, consistent 
with the unit area impacts noted above. Loads for all constituents are lower under 
Alternative No. 1 than for the Base Condition, while the loads under Alternative No. 

2 are lower by a smaller amount (except for NH 3 , discussed below). 

Under Alternative No. 1, applications of Total N and Total P are reduced by about 
30% and 37%, respectively, and these reductions lead to total load reductions of 17% 
and 14%, respectively. For Alternative No. 2, the application reductions are 22% 
and 19% for Total N and Total P, respectively, and the corresponding load reductions 
are 8% and 6 %. Thus, the impacts of application reductions are highly non-linear, 
due to the complications of the form of the nutrient being applied as compared to the 
crop demands. 

It is interesting to note that Alternative No. 2 actually leads to a slight increase in the 
NH 3 load, as compared to the Base Condition. This is partially due to the increased 
NH 3 levels resulting from the increased mineralization (note that the Hay segment 
showed a slight increase in NH 3 runoff), but primarily due to the lower levels of 
phytoplankton (as shown by the Chi a plots in the appendices) and associated 
reduction in algal uptake of NH 3 . This further confirms the importance of the 
instream algal simulation in watershed assessment of nutrient management. 


Chapter 5 Representation of Nutrient Reduction Alternatives - A Demonstration 


61 



Conclusions and Issues for Nutrient Reduction 

This demonstration of the simulation of alternative nutrient reduction scenarios has 
shown that the Watershed Model with the refined AGCHEM plant uptake routines 
provides a reasonable representation of nutrient balances at the watershed scale for 
evaluation of management options. Some of the conclusions and issues identified in 
this work are as follows: 

a. The form, amount, and timing of nutrient (fertilizer and manure) applications 
are critical to reasonable modeling of watershed nutrient balances and the 
potential impacts of nutrient reduction alternatives. 

b. The Watershed Model with the refined AGCHEM plant uptake routines 
developed in this work provides a viable framework for investigating these 
issues - form, amount, timing of applications - and their impacts on resulting 
water quality. 

c. Because of the critical importance of these application issues, further efforts 
should be directed to more accurately defining these parameters for both the 
current (Base) application scenario and potential nutrient reduction alternatives 
of interest to the CBPO and it member states. 

d. Since nutrient application is a direct function of crop needs, the CBPO should 
consider upgrading the Watershed Model to simulate the major crops 
individually and remove the ’composite crop’ representation and its associated 
limitations. Further investigation of specific practices (e.g. split applications, 
cover crops, manure practices) and expected crop yields for individual model 
segments should be pursued as part of this effort. 

e. If manure management and utilization is to be a significant component of the 
CBP nutrient reduction efforts, mineralization and subsequent availability of 
organic N from animal waste should be further investigated and the ability of 
the AGCHEM module to represent this component should be improved. 
Current efforts are underway to include multiple organic N compartments 
within AGCHEM to better model dissolved organic N (DON) from forested 
areas; these refinements may provide an opportunity to also address the issues 
related to plant availability of manure N. 


62 


Chapter 5 Representation of Nutrient Reduction Alternatives - A Demonstration 




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Values. (DRAFT, November 17, 1994). U.S. EPA, CBPO, Annapolis, MD. 

Rawls, W J. D.L. Brakensiek, and K.E. Saxton. 1982. Estimation of Soil Water 
Properties. Trans. ASAE Paper No. 81-2510. pp 1316-1320. 

Shaffer, M.J., A.D. Halvorson, and F.J. Pierce. (1991). Nitrate Leaching and 
Economic Analysis Package (NLEAP): Model Description and Application. In: 
Managing Nitrogen for Groundwater Quality and Farm Profitability. R.F. Follett, 
D.R. Keeney, and R.M. Cruse (eds.). Soil Science Society of America, Inc. 

Sharpley, A.N., and J.R. Williams, eds. (1990). EPIC-Erosion/Productivity Impact 
Calculator: 1. Model Documentation. U.S. Department of Agriculture Technical 
Bulletin No. 1768. 235 p. 

Skaggs, R.W. (1978). A Water Management Model for Shallow Water Table Soils. 
North Carolina Water Resources Institute, Report No. 134. North Carolina State 
University, Raleigh, NC. 178 p. 

Smith, R.E. (1992). Opus, An Integrated Simulation Model for Transport of Nonpoint 
Source Pollutants at the Field Scale: Volume I, Documentation. U.S. Department 
of Agriculture, Agriculture Research Service, ARS-98, 120 p. 

Tisdale, S.L., W.L. Nelson, and J.D. Beaton. 1985. Soil Fertility and Fertilizers . 

4th Edition. Macmillan Publishing Company, New York, NY. 754 p. 

U.S. Department of Agriculture. 1984. Usual Planting and Harvesting dates for 
U.S. Field Crops. Agricultural Handbook No. 628, Statistical Reporting Service, 
U.S. Department of Agriculture, Washington, DC. 77 p. 


file:9408\REP9408.wp 


64 


References 




Appendices 


Appendix A. 
Appendix B. 

Appendix C. 
Appendix D. 


Shenandoah Model Segment Results 

West Branch Susquehanna Model Segments 
Results 

Monocacy Model Segments Results 

Alternative Nutrient Reduction Scenario 
Results for the Shenandoah Model Segments 


Appendices 


65 





Appendix A 

Shenandoah Model Segments 
Results 


Simulated and Observed Flow at Reach 200 

Frequency Analysis of Flow at Reach 200 

Comparison of Annual Total Observed and Simulated Flow Volume 

Simulated and Observed Sediment Concentration at Reach 200 

Simulated and Observed Water Temperature at Reach 200 

Simulated and Observed DO at Reach 200 

Simulated and Observed Nitrate-N Concentration at Reach 200 

Simulated and Observed Ammonia-N Concentration at Reach 200 

Simulated and Observed Organic-N Concentration at Reach 200 

Simulated and Observed Total-N Concentration at Reach 200 

Simulated and Observed P0 4 -P Concentration at Reach 200 

Simulated and Observed Organic-P Concentration at Reach 200 

Simulated and Observed Total-P Concentration at Reach 200 

Simulated and Observed TOC Concentration at Reach 200 

Simulated Chlorophyll A Concentration at Reach 200 

Simulated BOD Concentration at Reach 200 

Simulated Benthic Algae Concentration at Reach 200 

AGCHEM Summary for Shenandoah Basin (Hi-Till), PERLND 192 
AGCHEM Summary for Shenandoah Basin (Low-Till), PERLND 193 
AGCHEM Summary for Shenandoah Basin (HAY), PERLND 196 
AGCHEM Summary for Shenandoah Basin (Hi-Till), PERLND 202 
AGCHEM Summary for Shenandoah Basin (Low-Till), PERLND 203 
AGCHEM Summary for Shenandoah Basin (HAY), PERLND 206 

Per Acre Load Contributed from Each Land Use in Shenandoah Basin (lb/ac) 
Percent of Total Load Contributed from Each Land Use in Shenandoah Basin 


Appendix A 


A1 














CHESAPEAKE BAY WATERSHED HYDROLOGIC CALIBRATION 
COMPARISON OF ANNUAL TOTAL OBSERVED vs SIMULATED FLOW 

PHASE III 


SHENANDOAH RIVER AT MILLVILLE, WV (SEGMENT 200) 


YEAR 

OBSERVED* 

SIMULATED' 


FLOW (in) 

FLOW (in) 

1984 

17.86 

17.53 

1985 

13.02 

13.45 

1986 

6.93 

6.49 

1987 

13.98 

11.86 

1988 

7.74 

6.76 

1989 

12.04 

13.20 

1990 

11.60 

13.78 

1991 

10.53 

9.99 

MEAN 

11.71 

11.63 


* - Observed Flow at Shenandoah River at Millville, WV 
** - Simulated Outflow from RCH 200 


A4 


Appendix A Shenandoah Model Segments Results 



1 50000 



Appendix A Shenandoah Model Segments Results 


SIMULATED AND OBSERVED SEDIMENT CONG AT REACH 200 
SHENANDOAH RIVER AT MILLVILLE, WV 












SIM WTEMP 
OBS WTEMP 



q tO CM CO ^ O <0 CSl CO M" O 

r*o to CM CM CM ■*“ 

0 930 Nl d«31 H31VM 


A6 


Appendix A Shenandoah Model Segments Results 












































SIM DO 
OBS DO 



Appendix A Shenandoah Model Segments Results 


1984 1985 


































1 50000 



(sjo)mou 


l/OH NI ONOD N-CON 


A8 


Appendix A Shenandoah Model Segments Results 


1984 1985 1986 1987 1988 1989 1990 

SIMULATED AND OBSERVED N03-N CONC AT REACH 200 
SHENANDOAH RIVER AT MILLVILLE, WV 





150000 



Appendix A Shenandoah Model Segments Results 


r*l# 


1984 1985 1986 1987 1968 1989 

SIMULATED AND OBSERVED NH3-N AT REACH 200 
SHENANOOAH RIVER AT MILLVILLE, WV 














150000 



C3 O C3 

O 

o 

LT3 


<0 CM OQ 


<0 CN4 OO 


CM CM 04 


(SJO)MOU 


l/3« Ml ONOO NOaO 


A10 


Appendix A Shenandoah Model Segments Results 



























1 50000 




{SJO} JKOU 


1/OH NI ONOO N 1V101 




SIMULATED AND OBSERVED TOTAL N AT REACH 200 
SHENANDOAH RIVER AT MILLVILLE, WV 





000051 



(SJ3)*0U 


1/3H NI ONOD d-tOd 


A12 


Appendix A Shenandoah Model Segments Results 


1984 1985 1986 19B7 1988 1989 1990 

SIMULATED AND OBSERVED P04-P AT REACH 200 
SHENANDOAH RIVER AT MILLVILLE, WV 





























1 50000 



SHENANDOAH RIVER AT MILLVILLE, WV 




1 50000 




CD O CD <30 <0 

tea oj •*— •*— 

in 

r-* 


(sjd)mou 


cm a oo <o 

l/ow Nl ONOO d 1VI01 



A14 


Appendix A Shenandoah Model Segments Results 


SHENANDOAH RIVER AT MILLVILLE, WV 













































150000 



o o m 

lO 


o 

iXl 


(sjo)mou 


in o 

C*«J Csl 


i/on n i ooi 


A16 


Appendix A Shenandoah Model Segments Results 


SHENANDOAH RIVER 





















0<OCSJCO'*-0<OCMOO 

*■*" PO K1 C-*| C«4 Csi 

1/9H NI GOB 


Appendix A Shenandoah Model Segments Results 


A17 


SHENANDOAH RIVER AT MILLVILLE, WV 









































AGCHEM RESULTS FOR SHENANDOAH (HI-TILL), SEGMENT 192 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 






Surface 

11.89 

9.687 

2.636 

8.933 

8.286 

Interflow 

3.631 

3.752 

1.582 

3.289 

3.063 

Baseflow 

6.611 

5.361 

4.152 

5.442 

5.391 

Total 

22.13 

18.80 

8.369 

17.66 

16.74 

Sediment Loss (t/a) 

1.390 

2.370 

0.2770 

1.560 

1.399 

Nutrient Loss (lb/a) 






N03 Loss 






Surface 

1.181 

0.4099 

0.2172 

0.4990 

0.5768 

Interflow 

12.93 

13.58 

8.011 

11.73 

11.56 

Baseflow 

2.975 

2.346 

2.439 

4.034 

2.949 

Total 

17.09 

16.33 

10.67 

16.27 

15.09 

NH3 Loss 






Surface 

4.554 

0.6716 

0.8936 

1.356 

1.869 

Interflow 

1.353 

1.781 

1.518 

2.262 

1.729 

Baseflow 

0.3573E-01 

0.9326E-02 

0.3888E-02 

0.3509E-02 

0.131IE-01 

Sediment 

0.1642E-01 

0.2475E-01 

0.3416E-02 

0.1687E-01 

0.1536E-01 

Total 

5.959 

2.487 

2.419 

3.638 

3.626 

ORGN Sediment 

4.841 

8.743 

1.020 

5.521 

5.031 

Total N Loss (lb/a) 

27.89 

27.56 

14.11 

25.43 

23.75 

P04 Loss 






Surface 

1.747 

0.8882 

0.8893 

1.005 

1.132 

Interflow 

0.5706 

1.181 

0.6109 

1.360 

0.9306 

Baseflow 

0.6270E-03 

0.7579E-05 

0.4806E-05 

0.8252E-05 

0.1619E-03 

Sediment 

0.7212E-01 

0.1254 

0.1830E-01 

0.8645E-01 

0.7557E-01 

Total 

2.391 

2.195 

1.519 

2.451 

2.139 

ORGP Sediment 

1.342 

2.445 

0.2823 

1.534 

1.401 

Total P Loss (lb/a) 

3.733 

4.639 

1.801 

3.985 

3.539 

Atm Depn. N03 (lb/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (lb/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

126.0 

129.0 

127.7 

129.0 

127.9 

Nitrate appln.(lb/a) 

28.48 

29.46 

29.05 

29.46 

29.11 

ORGN appln.(lb/a) 

56.76 

56.76 

56.76 

56.76 

56.76 

Total N appln.(lb/a) 

211.3 

215.2 

213.5 

215.2 

213.8 

P04-P appln.(lb/a) 

42.60 

44.39 

43.65 

44.39 

43.76 

ORGP appln.(lb/a) 

15.30 

15.30 

15.30 

15.30 

15.30 

Total P appln.(lb/a) 

57.91 

59.69 

58.95 

59.69 

59.06 

Plant Uptake (lb/a) 






Nitrogen 






Surface 

0.1000E-01 

0.1600E-01 

0.5000E-02 

0.1000E-01 

0.1025E-01 

Upper 

75.22 

73.86 

79.48 

83.89 

78.11 

Lower 

51.98 

57.08 

57.08 

57.08 

55.81 

Total 

127.2 

131.0 

136.6 

141.0 

133.9 

Phosphorus 






Surface 

0.8000E-02 

0.1200E-01 

0.3000E-02 

0.8000E-02 

0.7750E-02 

Upper 

19.58 

19.92 

19.93 

19.91 

19.83 

Lower 

3.753 

3.752 

3.752 

3.752 

3.752 

Total 

23.34 

23.68 

23.69 

23.67 

23.59 

Deficit (lb/a) 






Nitrogen 






Surface 

1.441 

1.435 

1.446 

1.441 

1.441 

Upper 

11.61 

12.97 

7.396 

2.966 

8.736 

Lower 

5.196 

0.0000 

0.0000 

0.0000 

1.299 

Total 

18.25 

14.40 

8.842 

4.407 

11.47 

Phosphorus 






Surface 

1.243 

1.238 

1.247 

1.243 

1.243 

Upper 

0.4419 

0.9227E-01 

0.9982E-01 

0.1092 

0.1858 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

1.685 

1.330 

1.347 

1.352 

1.428 

Other Fluxes-Ib/ac 






N Mineralization 

18.66 

21.40 

22.05 

22.06 

21.04 

P Mineralization 

2.496 

2.487 

2.502 

2.459 

2.486 

Denitrification 

3.351 

4.699 

6.258 

6.860 

5.292 

N Immobilization 

22.95 

26.50 

26.73 

26.17 

25.59 

P Immobilization 

12.99 

21.38 

17.73 

20.46 

18.14 


Appendix A Shenandoah Model Segments Results A19 


AGCHEM RESULTS FOR SHENANDOAH (HI-TILL), SEGMENT 192 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

31.42 

45.43 

41.84 

35.51 

38.55 

Runoff (in) 

Surface 

2.461 

9.571 

8.561 

6.395 

6.747 

Interflow 

1.588 

3.969 

3.331 

2.128 

2.754 

Baseflow 

4.360 

6.394 

5.551 

4.896 

5.300 

Total 

8.409 

19.93 

17.44 

13.42 

14.80 

Sediment Loss (t/a) 

0.1460 

0.8070 

1.120 

0.8620 

0.7337 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2378 

1.480 

0.7108 

0.6698 

0.7746 

Interflow 

13.73 

16.67 

16.13 

10.57 

14.28 

Baseflow 

3.148 

7.087 

3.053 

2.956 

4.061 

Total 

NH3 Loss 

17.12 

25.24 

19.89 

14.20 

19.11 

Surface 

0.5165 

4.789 

2.844 

1.706 

2.464 

Interflow 

1.538 

2.048 

2.132 

1.321 

1.760 

Baseflow 

0.2033E-02 

0.2348E-02 

0.1589E-02 

0.1610E-02 

0.1895E-02 

Sediment 

0.1628E-02 

0.1035E-01 

0.1286E-01 

0.1046E-01 

0.8825E-02 

Total 

2.058 

6.849 

4.991 

3.039 

4.234 

ORGN Sediment 

0.4887 

2.847 

4.070 

3.047 

2.613 

Total N Loss (Ib/a) 

19.67 

34.94 

28.95 

20.28 

25.96 

P04 Loss 

Surface 

0.5708 

1.969 

2.148 

0.9956 

1.421 

Interflow 

1.135 

1.630 

1.107 

0.6834 

1.139 

Baseflow 

0.6205E-05 

0.1546E-04 

0.1031E-04 

0.7217E-05 

0.9798E-05 

Sediment 

0.8985E-02 

0.4881E-01 

0.6800E-01 

0.5012E-01 

0.4398E-01 

Total 

1.714 

3.648 

3.323 

1.729 

2.603 

ORGP Sediment 

0.1359 

0.7911 

1.129 

0.8444 

0.7251 

Total P Loss (Ib/a) 

1.850 

4.439 

4.452 

2.574 

3.329 

Atm Depn. N03 (Ib/a) 

5.997 

7.040 

6.498 

6.097 

6.408 

Atm Depn. NH4 (Ib/a) 

1.852 

2.618 

2.130 

1.833 

2.108 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

127.7 

129.0 

129.0 

119.8 

126.4 

Nitrate appln.(lb/a) 

29.05 

29.46 

29.46 

26.41 

28.60 

ORGN appln.(lb/a) 

56.76 

56.76 

56.76 

56.76 

56.76 

Total N appln.(lb/a) 

213.6 

215.2 

215.2 

203.0 

211.7 

P04-P appln.(Ib/a) 

44.39 

44.39 

44.39 

44.39 

44.39 

ORGP appln.(Ib/a) 

15.30 

15.30 

15.30 

15.30 

15.30 

Total P appln.(Ib/a) 

59.69 

59.69 

59.69 

59.69 

59.69 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1100E-01 

0.2300E-01 

0.1500E-01 

0.1100E-01 

0.1500E-01 

Upper 

65.30 

73.76 

73.90 

67.83 

70.20 

Lower 

57.07 

57.08 

57.07 

57.08 

57.08 

Total 

122.4 

130.9 

131.0 

124.9 

127.3 

Phosphorus 

Surface 

0.9000E-02 

0.2000E-01 

0.1200E-01 

0.8000E-02 

0.1225E-01 

Upper 

19.91 

19.90 

19.93 

19.43 

19.79 

Lower 

3.753 

3.752 

3.752 

3.752 

3.752 

Total 

23.67 

23.67 

23.69 

23.19 

23.56 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.440 

1.427 

1.436 

1.439 

1.435 

Upper 

21.49 

13.02 

12.94 

19.07 

16.63 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

22.93 

14.45 

14.37 

20.51 

18.06 

Phosphorus 

Surface 

1.242 

1.231 

1.239 

1.242 

1.238 

Upper 

0.1181 

0.1222 

0.9433E-01 

0.5848 

0.2299 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

1.360 

1.353 

1.333 

1.827 

1.468 

Other Fluxes-Ib/ac 

N Mineralization 

20.59 

20.02 

20.93 

20.75 

20.57 

P Mineralization 

2.486 

2.492 

2.522 

2.472 

2.493 

Denitrification 

7.727 

10.45 

5.672 

5.684 

7.383 

N Immobilization 

26.75 

25.82 

26.61 

23.90 

25.77 

P Immobilization 

21.02 

23.55 

19.64 

20.02 

21.06 


A20 


Appendix A Shenandoah Model Segments Results 



AGCHEM RESULTS FOR SHENANDOAH (LOW-TILL), SEGMENT 193 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 






Surface 

10.09 

8.250 

1.916 

7.327 

6.896 

Interflow 

3.565 

3.726 

1.503 

3.193 

2.997 

Baseflow 

7.245 

5.996 

4.483 

5.937 

5.915 

Total 

20.90 

17.97 

7.901 

16.46 

15.81 

Sediment Loss (t/a) 

1.010 

1.720 

0.1750 

1.050 

0.9887 

Nutrient Loss (lb/a) 






N03 Loss 






Surface 

0.9321 

0.2866 

0.1423 

0.3981 

0.4398 

Interflow 

11.54 

12.14 

6.482 

9.989 

10.04 

Baseflow 

2.574 

1.558 

1.123 

1.853 

1.777 

Total 

15.04 

13.99 

7.747 

12.24 

12.25 

NH3 Loss 






Surface 

5.337 

0.5397 

0.9575 

1.178 

2.003 

Interflow 

1.153 

1.573 

1.356 

2.145 

1.557 

Baseflow 

0.3701E-01 

0.8887E-02 

0.3359E-02 

0.3275E-02 

0.1313E-01 

Sediment 

0.1171E-01 

0.1792E-01 

0.2089E-02 

0.1123E-01 

0.1074E-01 

Total 

6.538 

2.140 

2.319 

3.337 

3.583 

ORGN Sediment 

4.326 

7.789 

0.7913 

4.571 

4.369 

Total N Loss (lb/a) 

25.91 

23.92 

10.86 

20.15 

20.21 

P04 Loss 






Surface 

2.150 

0.8366 

0.9565 

1.064 

1.252 

Interflow 

0.5270 

0.6874 

0.3784 

0.9238 

0.6292 

Baseflow 

0.6368E-03 

0.6012E-05 

0.2165E-05 

0.2519E-05 

0.1619E-03 

Sediment 

0.5165E-01 

0.9029E-01 

0.1169E-01 

0.5676E-01 

0.5260E-01 

Total 

2.729 

1.614 

1.347 

2.045 

1.934 

ORGP Sediment 

1.154 

2.097 

0.2111 

1.222 

1.171 

Total P Loss (lb/a) 

3.883 

3.711 

1.558 

3.267 

3.105 

Atm Depn. N03 (lb/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (lb/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

128.4 

131.7 

130.4 

131.7 

130.6 

Nitrate appln.(lb/a) 

29.30 

30.41 

29.95 

30.41 

30.02 

ORGN appln.(lb/a) 

56.76 

56.76 

56.76 

56.76 

56.76 

Total N appln.(lb/a) 

214.5 

218.9 

217.1 

218.9 

217.3 

P04-P appln.(lb/a) 

41.67 

43.69 

42.85 

43.69 

42.98 

ORGP appln.(lb/a) 

15.30 

15.30 

15.30 

15.30 

15.30 

Total P appln.(lb/a) 

56.97 

58.99 

58.15 

58.99 

58.28 

Plant Uptake (lb/a) 






Nitrogen 






Surface 

0.2800E-01 

0.2400E-01 

0.7000E-02 

0.2500E-01 

0.2100E-01 

Upper 

80.37 

81.97 

88.71 

91.98 

85.76 

Lower 

51.25 

61.12 

61.13 

55.95 

57.36 

Total 

131.6 

143.1 

149.9 

148.0 

143.1 

Phosphorus 






Surface 

0.1900E-01 

0.1800E-01 

0.5000E-02 

0.1900E-01 

0.1525E-01 

Upper 

18.93 

19.50 

19.91 

19.90 

19.56 

Lower 

3.753 

3.752 

3.752 

3.752 

3.752 

Total 

22.70 

23.27 

23.67 

23.67 

23.33 

Deficit (lb/a) 






Nitrogen 






Surface 

1.523 

1.526 

1.544 

1.526 

1.530 

Upper 

12.49 

11.07 

4.300 

0.9946 

7.214 

Lower 

9.928 

0.0000 

0.0000 

5.153 

3.770 

Total 

23.94 

12.60 

5.844 

7.673 

12.51 

Phosphorus 






Surface 

1.232 

1.233 

1.246 

1.232 

1.236 

Upper 

1.085 

0.5133 

0.9982E-01 

0.1092 

0.4518 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.317 

1.746 

1.346 

1.341 

1.687 

Other Fluxes-Ib/ac 






N Mineralization 

18.81 

22.25 

22.89 

22.01 

21.49 

P Mineralization 

2.765 

2.714 

2.759 

2.744 

2.746 

Denitrification 

2.505 

2.969 

2.725 

3.018 

2.804 

N Immobilization 

23.54 

27.70 

27.90 

27.21 

26.59 

P Immobilization 

15.33 

23.14 

19.00 

21.78 

19.81 


Appendix A Shenandoah Model Segments Results 


A21 


AGCHEM RESULTS FOR SHENANDOAH (LOW-TILL), SEGMENT 193 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

31.42 

45.43 

41.84 

35.51 

38.55 

Runoff (in) 

Surface 

1.447 

7.420 

7.087 

5.296 

5.313 

Interflow 

1.479 

3.951 

3.365 

2.152 

2.737 

Baseflow 

4.788 

7.142 

6.262 

5.450 

5.911 

Total 

7.713 

18.51 

16.72 

12.90 

13.96 

Sediment Loss (t/a) 

0.7836E-01 

0.5170 

0.8060 

0.5530 

0.4886 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.1217 

0.9763 

0.5880 

0.5449 

0.5577 

Interflow 

12.28 

16.56 

16.22 

9.944 

13.75 

Baseflow 

1.888 

4.546 

1.147 

1.435 

2.254 

Total 

14.29 

22.08 

17.95 

11.92 

16.56 

NH3 Loss 

Surface 

0.4598 

3.536 

3.167 

1.424 

2.147 

Interflow 

1.502 

1.689 

2.016 

1.275 

1.620 

Baseflow 

0.2005E-02 

0.2276E-02 

0.1532E-02 

0.1601E-02 

0.1854E-02 

Sediment 

0.8305E-03 

0.6175E-02 

0.9018E-02 

0.6571E-02 

0.5649E-02 

Total 

1.965 

5.234 

5.194 

2.707 

3.775 

ORGN Sediment 

0.3173 

2.225 

3.557 

2.413 

2.128 

Total N Loss (Ib/a) 

16.57 

29.54 

26.70 

17.04 

22.46 

P04 Loss 

Surface 

0.5983 

1.787 

2.123 

1.064 

1.393 

Interflow 

0.9134 

1.353 

0.7625 

0.4613 

0.8725 

Baseflow 

0.1696E-05 

0.3243E-05 

0.1221E-05 

0.8632E-06 

0.1756E-05 

Sediment 

0.4732E-02 

0.3056E-01 

0.4681E-01 

0.3270E-01 

0.2870E-01 

Total 

1.516 

3.171 

2.932 

1.558 

2.294 

ORGP Sediment 

0.8493E-01 

0.5962 

0.9516 

0.6442 

0.5692 

Total P Loss (Ib/a) 

1.601 

3.767 

3.884 

2.202 

2.864 

Atm Depn. N03 (Ib/a) 

5.997 

7.040 

6.498 

6.097 

6.408 

Atm Depn. NH4 (Ib/a) 

1.852 

2.618 

2.130 

1.833 

2.108 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

130.4 

131.7 

131.7 

121.4 

128.8 

Nitrate appln.(lb/a) 

29.95 

30.41 

30.41 

26.95 

29.43 

ORGN appln.(lb/a) 

56.76 

56.76 

56.76 

56.76 

56.76 

Total N appln.(lb/a) 

217.1 

218.9 

218.9 

205.1 

215.0 

P04-P appln.(lb/a) 

43.69 

43.69 

43.69 

43.69 

43.69 

ORGP appln.(lb/a) 

15.30 

15.30 

15.30 

15.30 

15.30 

Total P appln.(lb/a) 

58.99 

58.99 

58.99 

58.99 

58.99 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1800E-01 

0.4400E-01 

0.2000E-01 

0.2200E-01 

0.2600E-01 

Upper 

76.91 

78.35 

80.72 

75.78 

77.94 

Lower 

61.11 

59.64 

57.65 

53.09 

57.87 

Total 

138.0 

138.0 

138.4 

128.9 

135.8 

Phosphorus 

Surface 

0.1300E-01 

0.3500E-01 

0.1500E-01 

0.1600E-01 

0.1975E-01 

Upper 

19.91 

18.53 

19.93 

19.27 

19.41 

Lower 

3.753 

3.752 

2.902 

2.062 

3.117 

Total 

23.68 

22.32 

22.84 

21.35 

22.55 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.533 

1.507 

1.531 

1.528 

1.525 

Upper 

15.92 

14.45 

12.19 

17.12 

14.92 

Lower 

0.0000 

1.441 

3.452 

8.015 

3.227 

Total 

17.46 

17.40 

17.17 

26.66 

19.67 

Phosphorus 

Surface 

1.238 

1.215 

1.236 

1.235 

1.231 

Upper 

0.1181 

1.484 

0.9433E-01 

0.7397 

0.6090 

Lower 

0.0000 

0.0000 

0.8501 

1.690 

0.6350 

Total 

1.356 

2.699 

2.180 

3.664 

2.475 

Other Fluxes-Ib/ac 

N Mineralization 

21.61 

19.32 

19.92 

19.36 

20.05 

P Mineralization 

2.770 

2.743 

2.559 

2.209 

2.570 

Denitrification 

4.172 

6.168 

2.078 

2.455 

3.718 

N Immobilization 

27.44 

26.87 

27.62 

24.49 

26.60 

P Immobilization 

21.44 

23.71 

20.87 

20.98 

21.75 


A22 


Appendix A Shenandoah Model Segments Results 



AGCHEH RESULTS FOR SHENANDOAH (HAY), SEGMENT 196 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 

Surface 

9.811 

7.853 

1.582 

6.630 

6.469 

Interflow 

2.438 

2.491 

0.8270 

2.157 

1.978 

Baseflow 

7.159 

5.821 

4.034 

5.650 

5.666 

Total 

19.41 

16.16 

6.444 

14.44 

14.11 

Sediment Loss (t/a) 

0.7640 

0.7510 

0.1110 

0.6820 

0.5770 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.6038 

0.3131 

0.8451E-01 

0.3273 

0.3322 

Interflow 

1.081 

0.8509 

0.4196 

1.028 

-0.8449 

Baseflow 

3.258 

1.854 

1.373 

2.406 

2.223 

Total 

4.943 

3.018 

1.877 

3.762 

3.400 

NH3 Loss 

Surface 

0.9890 

0.3337 

0.1478 

0.3741 

0.4611 

Interflow 

0.6058E-01 

0.6783E-01 

0.4962E-01 

0.4995E-01 

0.5700E-01 

Baseflow 

0.3678E-01 

0.8706E-02 

0.2978E-02 

0.2619E-02 

0.1277E-01 

Sediment 

• 0.8143E-02 

0.7690E-02 

0.1182E-02 

0.7217E-02 

0.6058E-02 

Total 

1.095 

0.4179 

0.2016 

0.4339 

0.5371 

ORGN Sediment 

2.127 

2.138 

0.3088 

1.911 

1.621 

Total N Loss (Ib/a) 

8.165 

5.574 

2.388 

6.107 

5.559 

P04 Loss 

Surface 

1.287 

0.5291 

0.3795 

0.7280 

0.7309 

Interflow 

0.1617 

0.1372 

0.5257E-01 

0.2094 

0.1402 

Baseflow 

0.6426E-03 

0.4208E-05 

0.8614E-06 

0.4387E-06 

0.1620E-03 

Sediment 

0.3867E-01 

0.3871E-01 

0.6658E-02 

0.3872E-01 

0.3069E-01 

Total 

1.489 

0.7050 

0.4387 

0.9761 

0.9022 

ORGP Sediment 

0.5728 

0.5998 

0.8567E-01 

0.5226 

0.4452 

Total P Loss (Ib/a) 

2.061 

1.305 

0.5244 

1.499 

1.347 

Atm Depn. N03 (Ib/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (Ib/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

28.31 

28.31 

28.31 

28.31 

28.31 

Nitrate appln.(lb/a) 

7.320 

7.320 

7.320 

7.320 

7.320 

ORGN appln.(lb/a) 

8.760 

8.760 

8.760 

8.760 

8.760 

Total N appln.(lb/a) 

44.39 

44.39 

44.39 

44.39 

44.39 

P04-p appln.(lb/a) 

27.48 

27.48 

27.48 

27.48 

27.48 

ORGP appln.(lb/a) 

3.360 

3.360 

3.360 

3.360 

3.360 

Total P appln.(tb/a) 

30.84 

30.84 

30.84 

30.84 

30.84 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.4000E-02 

0.4000E-02 

0.1000E-02 

0.6000E-02 

0.3750E-02 

Upper 

32.82 

33.44 

33.49 

32.25 

33.00 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

45.66 

46.28 

46.33 

45.09 

45.84 

Phosphorus 

Surface 

0.8000E-02 

0.8000E-02 

0.2000E-02 

0.1100E-01 

0.7250E-02 

Upper 

15.94 

15.94 

15.94 

15.93 

15.94 

Lower 

3.002 

3.001 

3.001 

1.924 

2.732 

Total 

18.95 

18.95 

18.94 

17.86 

18.68 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4959 

0.4959 

0.4994 

0.4945 

0.4964 

Upper 

3.910 

3.292 

3.236 

4.462 

3.725 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

4.406 

3.788 

3.735 

4.957 

4.222 

Phosphorus 

Surface 

0.9928 

0.9924 

0.9988 

0.9895 

0.9934 

Upper 

0.8367E-01 

0.7382E-01 

0.7985E-01 

0.8734E-01 

0.8117E-01 

Lower 

0.0000 

0.0000 

0.0000 

1.077 

0.2693 

Total 

1.076 

1.066 

1.079 

2.154 

1.344 

Other Fluxes-Ib/ac 

N Mineralization 

19.27 

19.33 

19.17 

18.95 

19.18 

P Mineralization 

2.342 

2.351 

2.244 

1.954 

2.223 

Denitrification 

4.162 

3.366 

3.511 

4.291 

3.832 

N Immobilization 

8.629 

9.451 

9.354 

9.358 

9.198 

P Immobilization 

11.51 

13.02 

9.969 

12.05 

11.64 


Appendix A Shenandoah Model Segments Results 


A23 


AGCHEM RESULTS FOR SHENANDOAH (HAY), SEGMENT 196 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

31.42 

45.43 

41.84 

35.51 

38.55 

Runoff (in) 

Surface 

1.105 

7.414 

6.983 

4.666 

5.042 

Interflow 

0.8380 

2.648 

2.215 

1.403 

1.776 

Baseflow 

4.515 

6.778 

6.172 

5.363 

5.707 

Total 

6.459 

16.84 

15.37 

11.43 

12.53 

Sediment Loss (t/a) 

0.3172E-01 

0.3910 

0.6190 

0.2550 

0.3242 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.8371E-01 

0.8091 

0.3771 

0.3427 

0.4032 

Interflow 

0.3441 

0.9187 

1.052 

0.7893 

0.7760 

Baseflow 

1.864 

2.806 

2.126 

1.870 

2.167 

Total 

2.292 

4.533 

3.554 

3.002 

3.345 

NH3 Loss 

Surface 

0.1325 

1.693 

0.4345 

0.5063 

0.6916 

Interflow 

0.3004E-01 

0.7837E-01 

0.6507E-01 

0.4064E-01 

0.5353E-01 

Baseflow 

0.1467E-02 

0.1825E-02 

0.1438E-02 

0.1245E-02 

0.1494E-02 

Sediment 

0.2821E-03 

0.4695E-02 

0.6529E-02 

0.2905E-02 

0.3603E-02 

Total 

0.1643 

1.778 

0.5075 

0.5511 

0.7502 

ORGN Sediment 

0.7174E-01 

1.078 

1.757 

0.7028 

0.9024 

Total N Loss (Ib/a) 

2.528 

7.389 

5.819 

4.256 

4.998 

P04 Loss 

Surface 

0.1990 

1.559 

0.8449 

1.101 

0.9260 

Interflow 

0.5241E-01 

0.1152 

0.9546E-01 

0.6456E-01 

0.8191E-01 

Baseflow 

0.1353E-06 

0.8790E-07 

0.8993E-07 

0.8978E-07 

0.1007E-06 

Sediment 

0.1425E-02 

0.2458E-01 

0.3428E-01 

0:1626E-01 

0.1914E-01 

Total 

0.2528 

1.699 

0.9746 

1.182 

1.027 

ORGP Sediment 

0.1926E-01 

0.2994 

0.4902 

0.1917 

0.2501 

Total P Loss (Ib/a) 

0.2721 

1.998 

1.465 

1.374 

1.277 

Atm Depn. N03 (Ib/a) 

5.997 

7.040 

6.498 

6.097 

6.408 

Atm Depn. NH4 (Ib/a) 

1.852 

2.618 

2.130 

1.833 

2.108 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. 0RGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

28.31 

27.56 

28.31 

27.79 

27.99 

Nitrate appln.(lb/a) 

7.320 

7.070 

7.320 

7.145 

7.214 

ORGN appln.(lb/a) 

8.760 

8.760 

8.760 

8.760 

8.760 

Total N appln.(lb/a) 

44.39 

43.39 

44.39 

43.69 

43.96 

P04-p appln.(lb/a) 

27.48 

26.65 

27.48 

26.90 

27.13 

ORGP appln.(lb/a) 

3.360 

3.360 

3.360 

3.360 

3.360 

Total P appln.(lb/a) 

30.84 

30.01 

30.84 

30.26 

30.49 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.4000E-02 

0.1000E-01 

0.4000E-02 

0.4000E-02 

0.5500E-02 

Upper 

34.54 

32.10 

33.10 

32.45 

33.05 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

47.38 

44.94 

45.94 

45.29 

45.89 

Phosphorus 

Surface 

0.7000E-02 

0.1900E-01 

0.8000E-02 

0.8000E-02 

0.1050E-01 

Upper 

15.92 

15.92 

15.94 

15.96 

15.94 

Lower 

1.045 

0.9250 

0.7650 

0.6860 

0.8553 

Total 

16.97 

16.86 

16.71 

16.66 

16.80 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4963 

0.4900 

0.4959 

0.4960 

0.4945 

Upper 

2.184 

4.617 

3.622 

4.291 

3.678 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.680 

5.107 

4.118 

4.787 

4.173 

Phosphorus 

Surface 

0.9937 

0.9817 

0.9926 

0.9929 

0.9902 

Upper 

0.9447E-01 

0.9779E-01 

0.7546E-01 

0.5295E-01 

0.8017E-01 

Lower 

1.958 

2.077 

2.237 

2.316 

2.147 

Total 

3.046 

3.156 

3.305 

3.362 

3.217 

Other Fluxes-Ib/ac 

N Mineralization 

19.46 

19.25 

19.36 

19.19 

19.31 

P Mineralization 

1.662 

1.709 

1.712 

1.579 

1.665 

Denitrification 

4.040 

4.448 

3.901 

3.882 

4.068 

N Immobilization 

9.439 

9.079 

9.592 

9.291 

9.350 

P Immobilization 

12.10 

12.01 

10.65 

8.520 

10.82 


A24 


Appendix A Shenandoah Model Segments Results 



AGCHEH RESULTS FOR SHENANDOAH (HI-TILL), SEGMENT 202 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

39.78 

36.84 

27.99 

37.57 

35.54 

Runoff (in) 

Surface 

9.001 

4.544 

1.973 

5.008 

5.131 

Interflow 

3.480 

3.032 

1.403 

2.687 

2.650 

Baseflow 

6.224 

4.998 

4.168 

4.608 

4.999 

Total 

18.70 

12.57 

7.544 

12.30 

12.78 

Sediment Loss (t/a) 

1.660 

0.4610 

0.2090 

0.5850 

0.7288 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.9336 

0.2277 

0.3440 

0.4281 

0.4833 

Interflow 

11.24 

8.840 

6.672 

9.341 

9.023 

Baseflow 

2.820 

1.738 

1.615 

2.560 

2.183 

Total 

14.99 

10.81 

8.632 

12.33 

11.69 

NH3 Loss 

Surface 

2.766 

0.3425 

1.390 

1.644 

1.536 

Interflow 

1.082 

1.552 

1.534 

1.762 

1.482 

Baseflow 

0.3214E-01 

0.7711E-02 

0.3390E-02 

0.2456E-02 

0.1142E-01 

Sediment 

0.1978E-01 

0.4726E-02 

0.2658E-02 

0.6598E-02 

0.8441E-02 

Total 

3.900 

1.907 

2.931 

3.415 

3.038 

ORGN Sediment 

5.729 

1.607 

0.7419 

1.998 

2.519 

Total N Loss (Ib/a) 

24.62 

14.32 

12.30 

17.74 

17.25 

P04 Loss 

Surface 

1.042 

0.5627 

0.9401 

0.8519 

0.8492 

Interflow 

0.4315 

1.027 

0.5439 

1.038 

0.7601 

Baseflow 

0.5401E-03 

0.1690E-05 

0.1398E-05 

0.2451E-05 

0.1364E-03 

Sediment 

0.9119E-01 

0.2498E-01 

0.1343E-01 

0.3400E-01 

0.4090E-01 

Total 

1.565 

1.614 

1.497 

1.924 

1.650 

ORGP Sediment 

1.610 

0.4525 

0.2056 

0.5640 

0.7080 

Total P Loss (Ib/a) 

3.175 

2.067 

1.703 

2.488 

2.358 

Atm Depn. N03 (Ib/a) 

6.464 

6.154 

5.854 

6.257 

6.182 

Atm Depn. NH4 (Ib/a) 

2.118 

1.894 

1.670 

1.964 

1.911 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

123.1 

124.2 

124.2 

124.2 

123.9 

Nitrate appln.(lb/a) 

27.08 

27.42 

27.42 

27.42 

27.34 

ORGN appln.(lb/a) 

51.47 

51.47 

51.47 

51.47 

51.47 

Total N appln.(lb/a) 

201.6 

203.1 

203.1 

203.1 

202.7 

P04-P appln.(lb/a) 

42.78 

43.43 

43.43 

43.43 

43.27 

ORGP appln.(lb/a) 

11.12 

11.12 

11.12 

11.12 

11.12 

Total P appln.(lb/a) 

53.90 

54.55 

54.55 

54.55 

54.39 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1900E-01 

0.1000E-01 

0.3000E-02 

0.1500E-01 

0.1175E-01 

Upper 

75.22 

76.68 

80.95 

81.30 

78.54 

Lower 

52.24 

57.09 

57.10 

57.07 

55.88 

Total 

127.5 

133.8 

138.0 

138.4 

134.4 

Phosphorus 

Surface 

0.1800E-01 

0.9000E-02 

0.3000E-02 

0.1300E-01 

0.1075E-01 

Upper 

21.59 

22.33 

22.32 

22.30 

22.14 

Lower 

1.848 

2.868 

3.108 

4.203 

3.007 

Total 

23.46 

25.20 

25.43 

26.51 

25.15 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.432 

1.441 

1.448 

1.436 

1.439 

Upper 

11.61 

10.17 

6.026 

5.555 

8.340 

Lower 

4.968 

0.0000 

0.0000 

0.0000 

1.242 

Total 

18.01 

11.61 

7.474 

6.991 

11.02 

Phosphorus 

Surface 

1.383 

1.392 

1.398 

1.387 

1.390 

Upper 

0.8309 

0.1021 

0.1021 

0.1176 

0.2882 

Lower 

2.355 

1.335 

1.095 

0.0000 

1.196 

Total 

4.569 

2.829 

2.594 

1.505 

2.874 

Other Fluxes-Ib/ac 

N Mineralization 

19.14 

21.62 

22.12 

22.36 

21.31 

P Mineralization 

1.888 

2.230 

2.119 

2.396 

2.158 

Denitrification 

3.504 

3.926 

4.163 

5.860 

4.363 

N Immobilization 

22.95 

25.73 

25.74 

25.11 

24.88 

P Immobilization 

11.54 

18.44 

14.52 

19.30 

15.95 


Appendix A Shenandoah Model Segments Results 


A25 



AGCHEM RESULTS FOR SHENANDOAH (HI-TILL), SEGMENT 202 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

Runoff (in) 

28.82 

38.09 

39.88 

28.66 

33.86 

Surface 

2.796 

5.344 

6.123 

3.020 

4.321 

Interflow 

1.500 

2.632 

2.951 

1.467 

2.138 

Baseflow 

3.738 

4.789 

5.249 

4.139 

4.479 

Total 

8.033 

12.77 

14.32 

8.625 

10.94 

Sediment Loss (t/a) 

0.3410 

0.7170 

1.170 

0.4750 

0.6758 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2560 

0.5512 

0.4906 

0.3417 

0.4099 

Interflow 

12.51 

14.57 

11.19 

6.170 

11.11 

Baseflow 

1.990 

4.019 

1.862 

1.489 

2.340 

Total 

14.76 

19.14 

13.55 

8.001 

13.86 

NH3 Loss 

Surface 

0.4440 

1.668 

2.366 

0.7698 

1.312 

Interflow 

1.391 

1.391 

1.617 

0.9523 

1.338 

Baseflow 

0.1505E-02 

0.151IE-02 

0.1289E-02 

0.1199E-02 

0.1376E-02 

Sediment 

0.3936E-02 

0.1035E-01 

0.1378E-01 

0.5812E-02 

0.8470E-02 

Total 

1.841 

3.072 

3.998 

1.729 

2.660 

ORGN Sediment 

1.166 

2.503 

4.138 

1.637 

2.361 

Total N Loss (Ib/a) 

17.76 

24.71 

21.68 

11.37 

18.88 

P04 Loss 

Surface 

0.6633 

1.244 

1.555 

0.6319 

1.024 

Interflow 

1.057 

1.294 

0.8371 

0.4463 

0.9086 

Baseflow 

0.1740E-05 

0.2185E-05 

0.1238E-05 

0.9801E-06 

0.1536E-05 

Sediment 

0.2187E-01 

0.4370E-01 

0.7004E-01 

0.2843E-01 

Q.4101E-01 

Total 

1.743 

2.582 

2.462 

1.107 

1.973 

ORGP Sediment 

0.3305 

0.7043 

1.171 

0.4608 

0.6666 

Total P Loss (Ib/a) 

2.073 

3.286 

3.633 

1.567 

2.640 

Atm Depn. N03 (Ib/a) 

5.703 

6.603 

6.329 

5.688 

6.081 

Atm Depn. NH4 (Ib/a) 

1.684 

2.303 

2.051 

1.537 

1.894 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. 0RGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

124.2 

106.4 

123.2 

118.5 

118.1 

Nitrate appln.(lb/a) 

27.42 

21.48 

27.13 

25.53 

25.39 

ORGN appln.(lb/a) 

51.47 

51.47 

51.47 

51.47 

51.47 

Total N appln.(lb/a) 

203.1 

179.3 

201.9 

195.5 

195.0 

P04-P appln.(lb/a) 

43.43 

43.34 

42.87 

43.43 

43.27 

ORGP appln.(lb/a) 

11.12 

11.12 

11.12 

11.12 

11.12 

Total P appln.(lb/a) 

54.55 

54.46 

53.99 

54.55 

54.39 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1500E-01 

0.1300E-01 

0.2000E-01 

0.5000E-02 

0.1325E-01 

Upper 

67.09 

61.04 

71.65 

75.63 

68.85 

Lower 

57.07 

55.80 

57.06 

56.65 

56.64 

Total 

124.2 

116.9 

128.7 

132.3 

125.5 

Phosphorus 

Surface 

0.1200E-01 

0.1200E-01 

0.1500E-01 

0.6000E-02 

0.1125E-01 

Upper 

22.30 

22.28 

22.33 

22.36 

22.32 

Lower 

4.203 

4.202 

3.007 

2.251 

3.416 

Total 

26.51 

26.50 

25.35 

24.62 

25.75 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.436 

1.437 

1.431 

1.445 

1.437 

Upper 

19.70 

25.77 

15.20 

11.23 

17.98 

Lower 

0.0000 

1.286 

0.0000 

0.4290 

0.4288 

Total 

21.13 

28.49 

16.63 

13.10 

19.84 

Phosphorus 

Surface 

1.389 

1.389 

1.386 

1.395 

1.390 

Upper 

0.1273 

0.1322 

0.9377E-01 

0.6556E-01 

0.1047 

Lower 

0.0000 

0.0000 

1.196 

1.951 

0.7868 

Total 

1.516 

1.521 

2.676 

3.412 

2.281 

Other Fluxes-Ib/ac 

N Mineralization 

21.31 

17.57 

20.48 

21.20 

20.14 

P Mineralization 

2.413 

2.461 

2.071 

1.931 

2.219 

Denitrification 

5.485 

7.105 

4.009 

3.776 

5.094 

N Immobilization 

25.68 

21.64 

25.50 

23.87 

24.17 

P Immobilization 

16.33 

21.74 

17.33 

14.75 

17.54 


A26 


Appendix A Shenandoah Model Segments Results 



AGCHEM RESULTS FOR SHENANDOAH (LOU-TIU), SEGMENT 203 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

39.78 

36.84 

27.99 

37.57 

35.54 

Runoff (in) 

Surface 

7.438 

3.413 

1.345 

3.533 

3.932 

Interflow 

3.401 

2.963 

1.350 

2.505 

2.555 

Baseflow 

6.670 

5.437 

4.426 

4.937 

5.368 

Total 

17.51 

11.81 

7.121 

,10.97 

11.85 

Sediment Loss (t/a) 

0.9900 

0.2920 

0.1140 

0.3020 

0.4245 

Nutrient Loss (Ib/a) 

N03 Loss 

. Surface 

0.9958 

0.1578 

0.3093 

0.3807 

0.4609 

Interflow 

9.218 

8.381 

5.402 

6.978 

7.495 

Baseflow 

2.368 

0.9491 

0.6116 

1.450 

1.345 

Total 

12.58 

9.488 

6.323 

8.809 

9.300 

NH3 Loss 

Surface 

2.777 

0.3127 

1.261 

1.000 

1.338 

Interflow 

0.9135 

1.290 

1.450 

1.578 

1.308 

Baseflow 

0.3298E-01 

0.7316E-02 

0.2973E-02 

0.22S2E-02 

0.1139E-01 

Sediment 

0.1152E-01 

0.2908E-02 

0.1404E-02 

0.3340E-02 

0.4793E-02 

Total 

3.735 

1.613 

2.716 

2.584 

2.662 

ORGN Sediment 

4.267 

1.266 

0.4980 

1.289 

1.830 

Total N Loss (Ib/a) 

20.58 

12.37 

9.537 

12.68 

13.79 

P04 Loss 

Surface 

1.181 

0.5983 

0.8536 

0.8979 

0.8827 

Interflow 

0.3777 

0.6366 

0.3922 

0.6917 

0.5246 

Baseflow 

0.5433E-03 

0.9928E-06 

0.7342E-06 

0.1391E-05 

0.1366E-03 

Sediment 

0.5266E-01 

0.1549E-01 

0.7340E-02 

0.1716E-01 

0.2316E-01 

Total 

1.612 

1.250 

1.253 

1.607 

1.430 

ORGP Sediment 

1.138 

0.3392 

0.1333 

0.3445 . 

0.4887 

Total P Loss (Ib/a) 

2.750 

1.590 

1.386 

1.951 

1.919 

Atm Depn. N03 (Ib/a) 

6.464 

6.154 

5.854 

6.257 

6.182 

Atm Depn. NH4 (Ib/a) 

2.118 

1.894 

1.670 

1.964 

1.911 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

124.6 

125.9 

125.9 

125.9 

125.6 

Nitrate appln.(lb/a) 

28.96 

29.39 

29.39 

29.39 

29.28 

ORGN appln.(lb/a) 

54.54 

54.54 

54.54 

54.54 

54.54 

Total N appln.(lb/a) 

208.1 

209.9 

209.9 

209.9 

209.4 

P04-P appln.(lb/a) 

42.36 

43.12 

43.12 

43.12 

42.93 

ORGP appln.(lb/a) 

14.70 

14.70 

14.70 

14.70 

14.70 

Total P appln.(lb/a) 

57.06 

57.82 

57.82 

57.82 

57.63 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.4000E-01 

0.2300E-01 

0.5000E-02 

0.2500E-01 

0.2325E-01 

Upper 

82.25 

84.56 

92.05 

91.31 

87.54 

Lower 

51.57 

59.38 

50.54 

56.37 

54.46 

Total 

133.9 

144.0 

142.6 

147.7 

142.0 

Phosphorus 

Surface 

0.3400E-01 

0.1900E-01 

0.5Q00E-02 

0.2000E-01 

0.1950E-01 

Upper 

21.17 

21.84 

22.31 

22.29 

21.90 

Lower 

1.836 

2.184 

1.971 

3.195 

2.296 

Total 

23.03 

24.04 

24.29 

25.51 

24.22 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.511 

1.528 

1.545 

1.526 

1.528 

Upper 

10.63 

8.491 

1.038 

1.629 

5.447 

Lower 

9.671 

1.737 

10.48 

4.724 

6.653 

Total 

21.81 

11.76 

13.07 

7.879 

13.63 

Phosphorus 

Surface 

1.367 

1.382 

1.396 

1.380 

1.381 

Upper 

1.257 

0.5821 

0.1021 

0.1176 

0.5147 

Lower 

2.368 

2.019 

2.231 

1.007 

1.906 

Total 

4.991 

3.983 

3.729 

2.505 

3.802 

Other Fluxes-lb/ac 

N Mineralization 

19.15 

21.51 

19.86 

22.31 

20.71 

P Mineralization 

2.115 

2.318 

2.198 

2.416 

2.262 

Denitrification 

2.550 

1.953 

1.127 

3.195 

2.206 

N Immobilization 

23.61 

26.77 

26.83 

26.21 

25.85 

P Immobilization 

14.44 

20.40 

16.04 

21.02 

17.97 


Appendix A Shenandoah Model Segments Results 


A27 


AGCHEM RESULTS FOR SHENANDOAH (LOW-TILL), SEGMENT 203 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

28.82 

38.09 

39.88 

28.66 

33.86 

Runoff (in) 

Surface 

1.932 

3.814 

4.912 

2.401 

3.265 

Interflow 

1.441 

2.476 

2.906 

1.419 

2.060 

Baseflow 

4.146 

5.137 

5.669 

4.391 

4.836 

Total 

7.519 

11.43 

13.49 

8.211 

10.16 

Sediment Loss (t/a) 

0.1710 

0.3710 

0.6860 

0.2850 

0.3782 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.1699 

0.3872 

0.7875 

0.2571 

0.4004 

Interflow 

11.34 

14.09 

11.94 

4.749 

10.53 

Baseflow 

1.220 

2.493 

1.287 

0.5848 

1.396 

Total 

12.73 

16.97 

14.01 

5.590 

12.33 

NH3 Loss 

Surface 

0.3515 

1.402 

3.524 

0.6787 

1.489 

Interflow 

1.396 

1.159 

1.412 

0.9226 

1.222 

Baseflow 

0.1497E-02 

0.1396E-02 

0.1213E-02 

0.1158E-02 

0.1316E-02 

Sediment 

0.1854E-02 

0.5088E-02 

0.8063E-02 

0.3632E-02 

0.4659E-02 

Total 

1.751 

2.567 

4.945 

1.606 

2.717 

ORGN Sediment 

0.7228 

1.595 

3.017 

1.228 

1.641 

Total N Loss (Ib/a) 

15.20 

21.13 

21.97 

8.425 

16.68 

P04 Loss 

Surface 

0.6955 

1.285 

1.746 

0.6217 

1.087 

Interflow 

0.9323 

1.091 

0.5800 

0.2848 

0.7220 

Baseflow 

0.1171E-05 

0.1474E-05 

0.7273E-06 

0.5229E-06 

0.9738E-06 

Sediment 

0.1044E-01 

0.2215E-01 

0.4029E-01 

0.1729E-01 

0.2254E-01 

Total 

1.638 

2.399 

2.366 

0.9238 

1.832 

ORGP Sediment 

0.1942 

0.4260 

0.8096 

0.3279 

0.4394 

Total P Loss (Ib/a) 

1.832 

2.825 

3.176 

1.252 

2.271 

Atm Depn. N03 (Ib/a) 

5.703 

6.603 

6.329 

5.688 

6.081 

Atm Depn. NH4 (Ib/a) 

1.684 

2.303 

2.051 

1.537 

1.894 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

125.9 

105.2 

124.8 

119.8 

118.9 

Nitrate appln.(lb/a) 

29.39 

22.48 

29.02 

27.34 

27.06 

ORGN appln.(lb/a) 

54.54 

54.54 

54.54 

54.54 

54.54 

Total N appln.(lb/a) 

209.9 

182.2 

208.4 

201.6 

200.5 

P04-P appln.(lb/a) 

43.12 

43.01 

42.47 

43.12 

42.93 

ORGP appln.(lb/a) 

14.70 

14.70 

14.70 

14.70 

14.70 

Total P appln.(lb/a) 

57.82 

57.71 

57.17 

57.82 

57.63 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2000E-01 

0.2200E-01 

0.2700E-01 

0.8000E-02 

0.1925E-01 

Upper 

78.76 

62.74 

75.63 

88.73 

76.46 

Lower 

58.62 

49.70 

59.76 

47.36 

53.86 

Total 

Phosphorus 

Surface 

137.4 

112.5 

135.4 

136.1 

130.3 

0.1500E-01 

0.1800E-01 

0.2000E-01 

0.7000E-02 

0.1500E-01 

Upper 

22.30 

20.30 

22.07 

22.36 

21.76 

Lower 

3.111 

3.560 

1.974 

1.397 

2.510 

Total 

25.43 

23.88 

24.06 

23.76 

24.28 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.532 

1.529 

1.523 

1.543 

1.532 

Upper 

14.05 

30.02 

17.27 

4.163 

16.38 

Lower 

2.465 

11.32 

1.355 

13.65 

7.197 

Total 

18.04 

42.86 

20.15 

19.36 

25.10 

Phosphorus 

Surface 

1.386 

1.383 

1.381 

1.394 

1.386 

Upper 

0.1273 

2.107 

0.3545 

0.6556E-01 

0.6636 

Lower 

1.093 

0.6431 

2.228 

2.805 

1.692 

Total 

2.606 

4.134 

3.964 

4.264 

3.742 

Other Fluxes-Ib/ac 

N Mineralization 

21.06 

16.48 

19.97 

18.64 

19.04 

P Mineralization 

2.293 

2.463 

2.101 

2.009 

2.217 

Denitrification 

2.612 

3.947 

2.526 

1.169 

2.563 

N Immobilization 

26.36 

21.55 

26.24 

24.36 

24.63 

P Immobilization 

17.32 

22.20 

19.17 

15.84 

18.63 


A28 


Appendix A Shenandoah Model Segments Results 



AGCHEM RESULTS FOR SHENANDOAH (HAY) 

1984 

l, SEGMENT 206 

1985 1986 

1987 

SUM/AVER 


Rainfall (in) 

39.78 

36.84 

27.99 

37.57 

35.54 


Runoff (in) 

Surface 

6.998 

3.215 

1.060 

2.775 

3.512 


Interflow 

2.458 

1.945 

0.7600 

1.580 

1.686 


Baseflow 

6.566 

5.063 

4.028 

4.531 

5.047 


Total 

16.02 

10.22 

5.848 

8.886 

10.24 


Sediment Loss (t/a) 

0.7220 

0.2190 

0.6218E-01 

0.1660 

0.2923 


Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.4650 

0.1504 

0.9988E-01 

0.1466 

0.2155 


Interflow 

1.228 

0.3914 

0.4585 

0.8801 

0.7395 


Baseflow 

2.955 

1.462 

1.123 

1.659 

1.800 


Total 

4.648 

2.003 

1.682 

2.686 

2.755 


NH3 Loss 

Surface 

0.7730 

0.1305 

0.2122 

0.1964 

0.3280 


Interflow 

0.5607E-01 

0.3661E-01 

0.5950E-01 

0.5215E-01 

0.5108E-01 


Baseflow 

0.3273E-01 

0.7037E-02 

0.2677E-02 

0.1827E-02 

0.1107E-01 


Sediment 

0.7866E-02 

0.2134E-02 

0.6718E-03 

0.1664E-02 

0.3084E-02 


Total 

0.8697 

0.1763 

0.2751 

0.2520 

0.3933 


ORGN Sediment 

2.017 

0.5983 

0.1667 

0.4436 

0.8064 


Total N Loss (Ib/a) 

7.535 

2.778 

2.123 

3.382 

3.954 


P04 Loss 

Surface 

0.8707 

0.1663 

0.4592 

0.4121 

0.4771 


Interflow 

0.1746 

0.1245 

0.6414E-01 

0.2026 

0.1415 


Baseflow 

0.5453E-03 

0.2077E-06 

0.1670E-06 

0.3875E-06 

0.1365E-03 


Sediment 

0.3861E-01 

0.1083E-01 

0.3945E-02 

0.8831E-02 

0.1555E-01 


Total 

1.084 

0.3016 

0.5273 

0.6235 

0.6341 


ORGP Sediment 

0.5464 

0.1655 

0.4560E-01 

0.1198 

0.2193 


Total,? Loss (Ib/a) 

1.631 

0.4672 

0.5729 

0.7433 

0.8536 


Atm Depn. N03 <lb/a) 

6.464 

6.154 

5.854 

6.257 

6.182 


Atm Depn. NH4 (Ib/a) 

2.118 

1.894 

1.670 

1.964 

1.911 


Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 


Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 


Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 


Ammonia appln.(lb/a) 

28.31 

28.31 

28.31 

28.31 

28.31 


Nitrate appln.(lb/a) 

7.320 

7.320 

7.320 

7.320 

7.320 


ORGN appln.(lb/a) 

8.760 

8.760 

8.760 

8.760 

8.760 


Total N appln.(lb/a) 

44.39 

44.39 

44.39 

44.39 

44.39 


P04-p appln.(lb/a) 

27.48 

27.48 

27.48 

27.48 

27.48 


ORGP appln.(lb/a) 

3.360 

3.360 

3.360 

3.360 

3.360 


Total P appln.(lb/a) 

Plant Uptake (Ib/a) 

30.84 

30.84 

30.84 

30.84 

30.84 


Nitrogen 

Surface 

0.9000E-02 

0.3000E-02 

0.1000E-02 

0.6000E-02 

0.4750E-02 


Upper 

32.41 

35.49 

34.71 

32.15 

33.69 


Lower 

12.84 

12.84 

12.84 

12.84 

12.84 


Total 

45.26 

48.33 

47.54 

44.99 

46.53 


Phosphorus 

Surface 

0.1600E-01 

0.7000E-02 

0.2000E-02 

0.1000E-01 

0.8750E-02 


Upper 

15.95 

15.94 

15.94 

15.93 

15.94 


Lower 

1.490 

0.9240 

0.9610 

1.970 

1.336 


Total 

17.46 

16.87 

16.91 

17.91 

17.29 


Deficit (Ib/a) 

Nitrogen 

Surface 

0.4914 

0.4968 

0.4991 

0.4945 

0.4955 


Upper 

4.310 

1.251 

2.030 

4.572 

3.041 


Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 


Total 

4.802 

1.748 

2.529 

5.067 

3.536 


Phosphorus 

Surface 

0.9846 

0.9937 

0.9984 

0.9905 

0.9918 


Upper 

0.7094E-01 

0.7296E-01 

0.7290E-01 

0.8399E-01 

0.7520E-01 


Lower 

1.513 

2.077 

2.041 

1.032 

1.666 


Total 

2.568 

3.144 

3.112 

2.106 

2.732 


Other Fluxes-Ib/ac 

N Mineralization 

19.23 

19.60 

19.31 

18.99 

19.28 


P Mineralization 

1.831 

1.801 

1.658 

1.956 

1.811 


Denitrification 

4.290 

3.140 

3.076 

3.918 

3.606 


N Immobilization 

8.689 

9.516 

9.189 

9.355 

9.187 


P Immobilization 11.54 

Appendix A Shenandoah Model Segments 

12.27 

Results 

8.714 

14.24 

11.69 

A29 



AGCHEM RESULTS FOR SHENANDOAH (HAY), SEGMENT 206 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

28.82 

38.09 

39.88 

28.66 

33.86 

Runoff (in) 

Surface 

1.269 

3.090 

4.584 

2.126 

2.767 

Interflow 

0.8230 

1.639 

2.004 

0.9720 

1.359 

Baseflow 

3.928 

4.760 

5.488 

4.383 

4.640 

Total 

6.021 

9.490 

12.08 

7.481 

8.767 

Sediment Loss (t/a) 

0.7286E-01 

0.1980 

0.5660 

0.2000 

0.2592 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.8922E-01 

0.3405 

0.1907 

0.1921 

0.2031 

Interflow 

0.2939 

0.6761 

0.7594 

0.6046 

0.5835 

Baseflow 

1.566 

2.321 

2.113 

1.466 

1.867 

Total 

1.950 

3.338 

3.063 

2.263 

2.654 

NH3 Loss 

Surface 

0.1106 

0.5248 

0.2438 

0.3057 

0.2962 

Interflow 

0.2738E-01 

0.4875E-01 

0.4028E-01 

0.2672E-01 

0.3578E-01 

Baseflow 

0.1138E-02 

0.1149E-02 

0.1177E-02 

0.9174E-03 

0.1095E-02 

Sediment 

0.7340E-03 

0.2374E-02 

0.5916E-02 

0.2450E-02 

0.2869E-02 

Total 

0.1399 

0.5771 

0.2912 

0.3357 

0.3360 

ORGN Sediment 

0.1917 

0.5332 

1.601 

0.5522 

0.7195 

Total N Loss (Ib/a) 

2.281 

4.448 

4.955 

3.150 

3.708 

P04 Loss 

Surface 

0.1929 

0.7599 

0.6552 

0.7940 

0.6005 

Interflow 

0.5032E-01 

0.9320E-01 

0.8933E-01 

0.4564E-01 

0.6962E-01 

Baseflow 

0.1432E-06 

0.9722E-07 

0.7523E-07 

0.8653E-07 

0.1005E-06 

Sediment 

0.3770E-02 

0.1263E-01 

0.3120E-01 

0.1408E-01 

0.1542E-01 

Total 

0.2470 

0.8657 

0.7757 

0.8538 

0.6856 

ORGP Sediment 

0.5159E-01 

0.1462 

0.4432 

0.1478 

0.1972 

Total P Loss (Ib/a) 

0.2986 

1.012 

1.219 

1.002 

0.8829 

Atm Depn. N03 (Ib/a) 

5.703 

6.603 

6.329 

5.688 

6.081 

Atm Depn. NH4 (Ib/a) 

1.684 

2.303 

2.051 

1.537 

1.894 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(Ib/a) 

28.31 

27.81 

27.58 

27.79 

27.87 

Nitrate appln.(Ib/a) 

7.320 

7.153 

7.076 

7.145 

7.174 

ORGN appln.(Ib/a) 

8.760 

8.760 

8.760 

8.760 

8.760 

Total N appln.(Ib/a) 

44.39 

43.72 

43.42 

43.69 

43.80 

P04-p appln.(Ib/a) 

27.48 

26.93 

26.68 

26.90 

27.00 

ORGP appln.(Ib/a) 

3.360 

3.360 

3.360 

3.360 

3.360 

Total P appln.(Ib/a) 

30.84 

30.29 

30.04 

30.26 

30.36 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.6000E-02 

0.6000E-02 

0.6000E-02 

0.1000E-02 

0.4750E-02 

Upper 

32.26 

33.50 

33.31 

32.56 

32.91 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

45.10 

46.35 

46.15 

45.40 

45.75 

Phosphorus 

Surface 

0.1000E-01 

0.1100E-01 

0.1000E-01 

0.3000E-02 

0.8500E-02 

Upper 

15.93 

15.92 

15.94 

15.96 

15.94 

Lower 

1.087 

0.9490 

0.8110 

0.6310 

0.8695 

Total 

17.03 

16.88 

16.76 

16.60 

16.82 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4948 

0.4940 

0.4937 

0.4990 

0.4954 

Upper 

4.458 

3.227 

3.424 

4.192 

3.825 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

4.952 

3.721 

3.918 

4.691 

4.321 

Phosphorus 

Surface 

0.9908 

0.9892 

0.9901 

0.9978 

0.9920 

Upper 

0.9095E-01 

0-.9446E-01 

0.6698E-01 

0.4683E-01 

0.7480E-01 

Lower 

1.916 

2.053 

2.190 

2.371 

2.132 

Total 

2.998 

3.136 

3.248 

3.415 

3.199 

Other Fluxes-Ib/ac 

N Mineralization 

19.71 

19.53 

19.30 

19.03 

19.39 

P Mineralization 

1.615 

1.737 

1.660 

1.511 

1.631 

Denitrification 

4.478 

5.159 

4.298 

3.850 

4.446 

N Immobilization 

9.673 

9.537 

9.342 

9.176 

9.432 

P Immobilization 

11.18 

13.20 

10.97 

7.684 

10.76 


A30 


Appendix A Shenandoah Model Segments Results 



Percent of Total Load Contributed from Each Land Use in Shenandoah Basin 


Segment 190 




<-- 

FOR 



--Pervious- 



-><-Impervious- 

> Point 

Total 



HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

NH3 


84 

1.74 

6.24 

15.88 

1.27 

1.76 

6.21 

5.00 

1.07 

60.85 

100.00 


85 

1.94 

3.59 

7.17 

1.32 

2.30 

3.27 

6.76 

1.33 

72.31 

100.00 


86 

1.15 

3.72 

8.28 

0.67 

0.63 

1.68 

4.08 

1.49 

78.32 

100.00 


87 

1.65 

4.61 

9.81 

1.03 

1.59 

2.98 

5.96 

1.26 

71.14 

100.00 


88 

1.09 

2.91 

6.45 

0.64 

0.43 

1.26 

4.18 

1.33 

81.68 

100.00 


89 

1.88 

8.37 

14.84 

1.12 

1.31 

11.77 

5.76 

1.31 

53.66 

100.00 


90 

1.87 

6.89 

16.64 

1.14 

1.66 

3.80 

5.95 

1.40 

60.63 

100.00 

MEAN 

91 

1.91 

5.00 

10.34 

1.16 

1.32 

4.92 

5.89 

1.59 

67.88 

100.00 


1.66 

5.29 

11.49 

1.06 

1.40 

4.69 

5.44 

1.33 

67.63 

100.00 

N03 


84 

17.62 

8.03 

16.40 

29.80 

11.82 

12.58 

0.56 

1.06 

2.12 

100.00 


85 

19.44 

8.52 

16.93 

31.06 

11.76 

8.53 

0.61 

1.05 

2.10 

100.00 


86 

20.59 

9.59 

16.17 

29.05 

9.87 

9.14 

0.59 

1.90 

3.09 

100.00 


87 

18.20 

9.28 

16.21 

28.95 

11.38 

11.63 

0.67 

1.26 

2.42 

100.00 


88 

15.90 

12.55 

24.31 

24.99 

8.47 

9.10 

0.54 

1.52 

2.60 

100.00 


89 

14.99 

11.23 

22.81 

26.86 

10.03 

10.93 

0.52 

1.04 

1.60 

100.00 


90 

18.28 

9.87 

20.67 

27.78 

10.39 

9.56 

0.53 

1.11 

1.79 

100.00 


91 

20.25 

9.02 

17.57 

28.33 

10.34 

10.33 

0.57 

1.36 

2.24 

100.00 

MEAN 


17.98 

9.70 

18.95 

28.42 

10.62 

10.36 

0.57 

1.23 

2.16 

100.00 

ORGN 


84 

13.47 

4.53 

9.38 

15.16 

10.78 

10.77 

26.76 

3.01 

6.14 

100.00 


85 

9.24 

8.15 

16.84 

10.28 

10.42 

10.79 

26.12 

2.71 

5.45 

100.00 


86 

8.26 

2.69 

4.84 

11.06 

5.64 

4.41 

41.88 

8.04 

13.17 

100.00 


87 

9.73 

6.08 

11.69 

10.37 

9.35 

11.41 

31.11 

3.49 

6.79 

100.00 


88 

6.48 

1.35 

2.04 

11.10 

3.22 

1.08 

49.03 

8.24 

17.46 

100.00 


89 

13.03 

3.62 

6.57 

12.58 

8.38 

7.42 

35.99 

4.29 

8.13 

100.00 


90 

10.02 

4.93 

10.01 

10.97 

9.58 

11.54 

31.32 

3.88 

7.75 

100.00 

MEAN 

91 

11.39 

4.79 

8.81 

12.73 

7.78 

5.99 

33.80 

4.84 

9.88 

100.00 


10.66 

5.06 

9.99 

11.91 

8.93 

9.06 

32.14 

4.13 

8.11 

100.00 

TN 

84 

12.68 

6.60 

14.23 

19.14 

9.08 

10.47 

9.88 

1.54 

16.39 

100.00 


85 

12.94 

7.34 

14.79 

19.05 

9.41 

8.05 

10.90 

1.56 

15.97 

100.00 


86 

12.28 

6.47 

11.56 

16.94 

6.20 

5.93 

10.62 

2.81 

27.20 

100.00 


87 

11.94 

7.22 

13.28 

17.32 

8.43 

9.40 

11.69 

1.81 

18.91 

100.00 


88 

10.02 

7.94 

15.53 

15.57 

5.26 

5.53 

10.43 

2.42 

27.29 

100.00 


89 

11.59 

8.91 

17.47 

18.14 

7.69 

10.20 

10.52 

1.73 

13.75 

100.00 


90 

12.80 

7.98 

17.08 

18.15 

8.28 

8.69 

10.38 

1.78 

14.86 

100.00 


91 

14.03 

7.06 

13.77 

18.60 

7.67 

8.03 

10.91 

2.15 

17.78 

100.00 

MEAN 


12.34 

7.48 

14.90 

18.04 

7.98 

8.61 

10.65 

1.89 

18.11 

100.00 

P04 


84 

3.02 

6.37 

16.88 

1.98 

4.06 

21.49 

3.18 

1.22 

41.79 

100.00 


85 

2.10 

7.74 

13.22 

1.89 

5.27 

13.48 

4.12 

1.45 

50.74 

100.00 


86 

0.97 

6.97 

14.35 

0.91 

1.15 

10.91 

3.04 

1.98 

59.71 

100.00 


87 

2.09 

7.78 

15.05 

1.45 

3.55 

16.78 

3.73 

1.42 

48.15 

100.00 


88 

0.59 

8.18 

16.79 

0.91 

0.52 

6.54 

3.52 

2.01 

60.94 

100.00 


89 

2.34 

11.35 

22.90 

1.54 

2.63 

28.64 

3.67 

1.48 

25.47 

100.00 


90 

1.86 

12.26 

25.10 

1.65 

3.81 

19.47 

3.97 

1.67 

30.20 

100.00 

MEAN 

91 

2.35 

7.42 

15.51 

1.61 

2.69 

27.46 

3.84 

1.86 

37.25 

100.00 


2.03 

8.52 

17.63 

1.55 

3.14 

18.77 

3.63 

1.59 

43.14 

100.00 

ORGP 

84 

9.74 

6.35 

12.66 

10.96 

7.79 

14.68 

22.56 

2.18 

13.09 

100.00 


85 

6.22 

10.73 

21.37 

6.92 

7.01 

14.27 

20.53 

1.82 

11.14 

100.00 


86 

5.62 

3.54 

6.15 

7.52 

3.83 

5.83 

33.23 

5.47 

28.82 

100.00 


87 

6.69 

8.14 

15.04 

7.13 

6.43 

15.02 

24.96 

2.40 

14.21 

100.00 


88 

4.33 

1.76 

2.55 

7.40 

2.15 

1.35 

38.17 

5.50 

36.82 

100.00 


89 

10.09 

5.45 

9.53 

9.74 

6.49 

11.18 

32.49 

3.32 

11.69 

100.00 


90 

7.35 

7.03 

13.75 

8.05 

7.03 

16.54 

26.82 

2.85 

10.57 

100.00 

MEAN 

91 

8.57 

7.00 

12.38 

9.57 

5.86 

8.61 

29.65 

3.64 

14.75 

100.00 


7.59 

7.02 

13.34 

8.48 

6.36 

12.44 

26.71 

2.95 

15.11 

100.00 


Appendix A Shenandoah Model Segments Results 


A31 




Segment 190 




<--- - - 



•-Pervious- 



-><-Impervious- 

> Point 

Total 



FOR 

HTC 

LTC 

PAS 

UR8 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

5.23 

6.11 

14.76 

5.01 

5.19 

18.29 

13.67 

1.50 

30.22 

100.00 


85 

3.76 

8.68 

16.11 

3.95 

5.78 

13.23 

15.30 

1.55 

31.65 

100.00 


86 

2.12 

5.80 

11.64 

2.57 

1.79 

9.14 

14.90 

2.79 

49.25 

100.00 


87 

3.64 

7.55 

14.37 

3.42 

4.42 

15.40 

15.61 

1.70 

33.85 

100.00 


88 

1.52 

6.13 

12.32 

2.53 

0.91 

4.89 

17.13 

2.80 

51.77 

100.00 


89 

4.52 

9.05 

17.83 

3.89 

3.64 

22.08 

16.83 

1.96 

20.16 

100.00 


90 

3.72 

9.83 

19.89 

3.84 

4.77 

17.52 

16.63 

2.01 

21.81 

100.00 


91 

4.25 

6.92 

13.74 

4.12 

3.59 

20.02 

16.85 

2.35 

28.15 

100.00 

MEAN 


3.81 

7.63 

15.38 

3.81 

4.09 

15.80 

15.72 

1.97 

31.77 

100.00 

BOO 

84 

11.75 

10.91 

15.22 

13.21 

9.39 

21.78 

8.41 

2.63 

6.68 

100.00 


85 

6.64 

19.96 

27.35 

7.39 

7.49 

18.18 

6.78 

1.95 

4.26 

100.00 


86 

9.01 

7.02 

9.46 

12.05 

6.15 

11.96 

16.47 

8.77 

19.11 

100.00 


87 

7.77 

15.31 

20.15 

8.28 

7.47 

21.76 

8.96 

2.78 

7.52 

100.00 


88 

7.49 

5.13 

8.10 

12.82 

3.72 

5.29 

20.43 

9.52 

27.51 

100.00 


89 

11.89 

10.80 

15.38 

11.47 

7.65 

17.09 

11.84 

3.92 

9.94 

100.00 


90 

8.08 

13.67 

19.10 

8.84 

7.72 

22.00 

9.11 

3.13 

8.38 

100.00 


91 

10.44 

13.32 

16.01 

11.67 

7.13 

13.48 

11.17 

4.43 

12.36 

100.00 

MEAN 


9.07 

13.69 

18.62 

10.13 

7.60 

18.46 

9.87 

3.52 

9.02 

100.00 

SED 

84 

22.36 

8.60 

14.50 

23.11 

5.83 

25.61 

0.00 

0.00 

0.00 

100.00 


85 

10.88 

15.30 

25.77 

15.81 

5.96 

26.27 

0.00 

0.00 

0.00 

100.00 


86 

23.18 

9.25 

13.57 

29.34 

4.57 

20.09 

0.00 

0.00 

0.00 

100.00 


87 

13.33 

12.96 

20.24 

17.12 

5.67 

30.69 

0.00 

0.00 

0.00 

100.00 


88 

20.63 

8.60 

10.71 

47.57 

2.39 

10.12 

0.00 

0.00 

0.00 

100.00 


89 

22.99 

9.25 

13.75 

24.20 

5.53 

24.28 

0.00 

0.00 

0.00 

100.00 


90 

13.52 

10.87 

18.15 

18.94 

6.00 

32.53 

0.00 

0.00 

0.00 

100.00 


91 

19.39 

12.23 

18.20 

25.30 

5.28 

19.60 

0.00 

0.00 

0.00 

100.00 

MEAN 


17.08 

11.46 

18.42 

21.19 

5.64 

26.23 

0.00 

0.00 

0.00 

100.00 


A32 


Appendix A Shenandoah Model Segments Results 





Segment 200 




<- 

FOR 

HTC 

LTC 

--Pervious- 

PAS 

URB 

HAY 

-><-Impervious- 

ANML RES 

> Point 
Source 

Total 

Load 

NH3 


84 

1.92 

6.52 

8.89 

1.77 

1.90 

5.75 

4.71 

1.25 

66.75 

100.00 


85 

1.93 

6.56 

8.94 

1.78 

1.91 

5.78 

4.74 

1.26 

67.13 

100.00 


86 

1.69 

3.76 

4.53 

1.15 

0.81 

1.37 

4.94 

1.37 

80.42 

100.00 


87 

1.17 

5.83 

7.70 

0.77 

0.52 

2.16 

3.13 

1.43 

77.32 

100.00 


88 

1.41 

6.50 

7.01 

1.11 

0.80 

1.90 

4.99 

1.42 

74.86 

100.00 


89 

1.18 

3.71 

5.02 

0.67 

0.49 

1.11 

3.52 

1.38 

82.97 

100.00 


90 

2.23 

8.73 

10.39 

1.75 

1.31 

6.49 

6.81 

2.24 

60.05 

100.00 


91 

2.38 

10.22 

18.02 

1.92 

1.50 

2.95 

7.00 

1.96 

54.05 

100.00 

MEAN 


2.22 

5.51 

7.29 

1.25 

0.76 

4.23 

5.33 

2.30 

71.12 

100.00 

N03 


84 

17.44 

10.11 

12.10 

35.10 

10.03 

12.41 

0.48 

0.93 

0.80 

100.00 


85 

19.22 

9.79 

11.71 

35.24 

9.87 

12.01 

0.46 

0.90 

0.78 

100.00 


86 

22.57 

9.36 

11.71 

38.16 

8.63 

6.86 

0.54 

1.11 

1.05 

100.00 


87 

23.02 

10.78 

11.25 

34.87 

8.25 

8.31 

0.49 

1.63 

1.37 

100.00 


88 

19.09 

12.00 

12.22 

34.69 

8.53 

10.35 

0.64 

1.32 

1.14 

100.00 


89 

16.88 

16.10 

19.79 

28.72 

7.10 

8.42 

0.48 

1.36 

1.15 

100.00 


90 

14.59 

15.41 

19.46 

29.89 

7.57 

10.63 

0.48 

1.16 

0.82 

100.00 


91 

19.77 

10.28 

15.15 

34.77 

8.47 

9.20 

0.52 

1.06 

0.77 

100.00 

MEAN 


25.22 

9.06 

9.02 

35.38 

8.09 

10.14 

0.47 

1.50 

1.10 

100.00 

ORGN 


84 

13.31 

7.33 

7.78 

18.36 

10.33 

10.21 

21.65 

2.31 

1.56 

100.00 


85 

14.34 

7.90 

8.38 

19.78 

11.13 

11.00 

23.33 

2.48 

1.68 

100.00 


86 

12.43 

4.40 

4.94 

16.01 

6.51 

6.49 

41.20 

4.57 

3.44 

100.00 


87 

10.22 

3.41 

3.26 

17.26 

6.47 

3.03 

43.48 

7.90 

4.96 

100.00 


88 

10.00 

5.34 

4.91 

18.19 

6.93 

4.69 

42.01 

4.76 

3.18 

100.00 


89 

10.38 

5.21 

4.60 

11.22 

5.72 

3.39 

46.83 

7.31 

5.34 

100.00 


90 

13.40 

6.30 

5.72 

18.14 

7.29 

5.31 

36.22 

4.75 

2.86 

100.00 

MEAN 

91 

12.43 

7.71 

8.01 

16.96 

6.97 

11.80 

30.60 

3.41 

2.12 

100.00 


7.25 

6.65 

7.11 

13.30 

4.72 

8.87 

40.75 

7.04 

4.30 

100.00 

TN 

84 

12.88 

8.48 

10.10 

23.21 

8.29 

10.26 

8.49 

1.35 

14.58 

100.00 


85 

14.16 

8.51 

10.13 

23.97 

8.40 

10.30 

8.52 

1.36 

14.64 

100.00 


86 

15.23 

6.94 

8.54 

24.44 

6.17 

5.32 

10.62 

1.76 

20.97 

100.00 


87 

13.75 

7.96 

8.80 

20.76 

5.36 

5.44 

8.92 

2.42 

26.58 

100.00 


88 

12.25 

9.03 

9.19 

21.89 

5.99 

6.81 

11.66 

1.98 

21.21 

100.00 


89 

11.05 

10.68 

13.02 

17.53 

4.83 

5.43 

9.19 

2.15 

26.13 

100.00 


90 

11.96 

12.19 

14.85 

22.18 

6.29 

8.68 

10.35 

2.03 

11.49 

100.00 


91 

14.72 

9.48 

13.69 

24.36 

6.77 

8.58 

10.47 

1.75 

10.19 

100.00 

MEAN 


16.86 

7.74 

8.18 

23.77 

5.82 

8.49 

9.97 

2.58 

16.60 

100.00 

P04 


84 

1.59 

9.79 

14.37 

4.13 

6.81 

27.75 

4.41 

1.60 

29.44 

100.00 


85 

1.60 

9.89 

14.52 

4.17 

6.88 

27.13 

4.46 

1.62 

29.74 

100.00 


86 

0.76 

14.82 

16.35 

2.76 

2.75 

10.95 

5.75 

2.18 

43.69 

100.00 


87 

0.46 

13.84 

16.51 

1.62 

1.55 

19.29 

3.64 

2.25 

40.87 

100.00 


88 

0.60 

14.68 

17.47 

2.49 

2.54 

18.82 

5.00 

1.93 

36.47 

100.00 


89 

0.48 

15.92 

21.32 

1.16 

1.39 

8.92 

3.99 

2.12 

44.70 

100.00 


90 

0.81 

17.47 

23.12 

2.33 

2.52 

23.17 

4.06 

1.82 

24.70 

100.00 

MEAN 

ORGP 

91 

0.96 

16.91 

23.16 

2.98 

3.34 

21.08 

4.70 

1.79 

25.08 

100.00 


0.36 

10.19 

12.12 

1.50 

1.21 

31.10 

3.85 

2.27 

37.40 

100.00 


84 

10.56 

11.44 

11.52 

14.56 

8.19 

15.36 

20.03 

1.83 

5.90 

100.00 


85 

10.62 

11.51 

11.59 

14.65 

8.24 

15.45 

20.15 

1.84 

5.93 

100.00 


86 

9.26 

6.47 

6.91 

11.93 

4.85 

9.36 

35.80 

3.41 

12.00 

100.00 


87 

7.50 

4.86 

4.49 

12.67 

4.75 

4.26 

37.22 

5.80 

18.44 

100.00 


88 

7.50 

7.92 

6.89 

13.65 

5.19 

6.65 

36.77 

3.57 

11.84 

100.00 


89 

7.17 

7.14 

5.98 

7.75 

3.95 

4.41 

37.73 

5.05 

20.79 

100.00 


90 

10.22 

9.46 

8.16 

13.83 

5.56 

7.77 

32.22 

3.62 

9.15 

100.00 

MEAN 

91 

9.04 

11.11 

10.94 

12.33 

5.07 

16.63 

25.96 

2.48 

6.46 

100.00 


5.03 

9.08 

9.21 

9.23 

3.27 

11.53 

32.98 

4.88 

14.80 

100.00 


Appendix A Shenandoah Model Segments Results 


A33 






Segment 

200 

































FOR 

HTC 

LTC 

PAS 

UR8 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

5.53 

10.09 

12.45 

8.61 

7.12 

20.97 

15.67 

1.63 

17.59 

100.00 


85 

5.57 

10.17 

12.55 

8.68 

7.18 

20.66 

15.80 

1.65 

17.73 

100.00 


86 

3.81 

10.80 

11.83 

5.93 

3.34 

9.65 

22.90 

2.49 

29.24 

100.00 


87 

2.32 

10.75 

12.47 

4.49 

2.33 

14.31 

17.40 

3.09 

32.84 

100.00 


88 

2.84 

11.55 

12.90 

6.03 

3.26 

13.65 

21.29 

2.36 

26.11 

100.00 


89 

2.34 

12.60 

15.87 

2.96 

2.04 

7.18 

18.58 

2.83 

35.61 

100.00 


90 

3.76 

14.03 

17.18 

5.86 

3.36 

17.09 

17.91 

2.30 

18.50 

100.00 


91 

4.13 

13.72 

17.10 

6.55 

3.86 

18.22 

18.09 

1.97 

16.37 

100.00 

MEAN 


1.75 

9.34 

10.63 

3.76 

1.78 

23.63 

17.45 

2.95 

28.70 

100.00 

BOD 

84 

10.68 

16.57 

10.69 

14.72 

8.29 

26.07 

6.26 

1.85 

4.89 

100.00 


85 

10.68 

16.57 

10.69 

14.72 

8.29 

26.07 

6.26 

1.85 

4.89 

100.00 


86 

10.95 

12.44 

9.68 

14.10 

5.73 

22.24 

13.08 

4.03 

7.74 

100.00 


87 

10.26 

8.40 

6.26 

17.34 

6.50 

9.02 

15.75 

7.94 

18.52 

100.00 


88 

9.03 

13.34 

8.49 

16.44 

6.26 

14.33 

13.70 

4.30 

14.12 

100.00 


89 

8.95 

11.40 

9.14 

9.67 

4.93 

12.38 

14.56 

6.30 

22.65 

100.00 


90 

10.80 

14.44 

10.08 

14.61 

5.87 

17.97 

10.52 

3.82 

11.89 

100.00 


91 

8.30 

16.90 

10.99 

11.32 

4.65 

30.87 

7.37 

2.28 

7.30 

100.00 

MEAN 


6.06 

13.22 

8.81 

11.11 

3.95 

18.79 

12.28 

5.88 

19.90 

100.00 

SED 

84 

22.77 

12.68 

10.77 

23.99 

7.99 

21.81 

0.00 

0.00 

0.00 

100.00 


85 

22.77 

12.68 

10.77 

23.99 

7.99 

21.81 

0.00 

0.00 

0.00 

100.00 


86 

19.70 

11.77 

10.62 

29.46 

6.36 

22.11 

0.00 

0.00 

0.00 

100.00 


87 

25.78 

10.32 

8.02 

36.59 

7.16 

12.14 

0.00 

0.00 

0.00 

100.00 


88 

17.82 

14.19 

10.44 

34.51 

7.11 

15.93 

0.00 

0.00 

0.00 

100.00 


89 

28.34 

16.94 

12.11 

21.95 

6.34 

14.32 

0.00 

0.00 

0.00 

100.00 


90 

23.71 

14.15 

10.43 

29.68 

6.58 

15.46 

0.00 

0.00 

0.00 

100.00 


91 

16.38 

14.49 

12.11 

23.83 

5.46 

27.73 

0.00 

0.00 

0.00 

100.00 

MEAN 


9.40 

18.09 

15.46 

23.00 

3.92 

30.12 

0.00 

0.00 

0.00 

100.00 


A34 


Appendix A Shenandoah Model Segments Results 





Per Acre Load Contributed from Each Land Use in Shenandoah Basin (lb/ac) 
Segment 190 



FOR 

HTC 

LTC PAS 

URB 

NH3 

84 

0.07395 

5.959 

6.538 

0.122 

0.518 

85 

0.05978 

2.487 

2.14 

0.09196 

0.492 

86 

0.03314 

2.419 

2.319 

0.04404 

0.126 

87 

0.05784 

3.638 

3.337 

0.08217 

0:387 

88 

0.03436 

2.058 

1.965 

0.04569 

0.09389 

89 

0.06837 

6.849 

5.234 

0.09252 

0.33 

90 

0.06026 

4.991 

5.194 

0.08365 

0.371 

91 

0.05155 

3.039 

2.707 

0.07117 

0.248 

MEAN 

0.054906 

3.93 

3.67925 

0.07915 

0.320736 

N03 

84 

1.67 

17.09 

15.04 

6.4 

7.77 

85 

1.66 

16.33 

13.99 

6.01 

6.97 

86 

1.02 

10.67 

7.747 

3.26 

3.39 

87 

1.42 

16.27 

12.24 

5.12 

6.16 

88 

0.966 

17.12 

14.29 

3.44 

3.57 

89 

1.5 

25.24 

22.08 

6.09 

6.96 

90 

1.64 

19.89 

17.95 

5.65 

6.47 

91 

1.42 

14.2 

11.92 

4.5 

5.03 

MEAN 

1.412 

17.10125 

14.40713 

5.05875 

5.79 

ORGN 

84 

0.64183 

4.841 

4.326 

1.63611 

3.5616 

85 

0.44149 

8.743 

7.789 

1.113 

3.45401 

86 

0.139496 

1.02 

0.7913 

0.42294 

0.66038 

87 

0.39326 

5.521 

4.571 

0.94976 

2.62297 

88 

0.104251 

0.4887 

0.3173 

0.40439 

0.359499 

89 

0.45633 

2.847 

2.225 

0.99799 

2.03679 

90 

0.368032 

4.07 

3.557 

0.91266 

2.44118 

91 

0.322399 

3.047 

2.413 

0.8162 

1.52852 

MEAN 

0.358386 

3.822213 

3.2487 

0.906631 

2.083118 

TN 

84 

2.38578 

27.89 

25.91 

8.15811 

11.8496 

85 

2.16127 

27.56 

23.92 

7.21496 

10.91601 

86 

1.192636 

14.11 

10.86 

3.72698 

4.17638 

87 

1.8711 

25.43 

20.15 

6.15193 

9.16997 

88 

1.104611 

19.67 

16.57 

3.89008 

4.023389 

89 

2.0247 

34.94 

29.54 

7.18051 

9.32679 

90 

2.068292 

28.95 

26.7 

6.64631 

9.28218 

91 

1.793949 

20.28 

17.04 

5.38737 

6.80652 

MEAN 

1.825292 

24.85375 

21.33625 

6.044531 

8.193854 

P04 

84 

0.05055 

2.391 

2.729 

0.0749 

0.471 

85 

0.02645 

2.195 

1.614 

0.05413 

0.461 

86 

0.00938 

1.519 

1.347 

0.02004 

0.07753 

87 

0.02937 

2.451 

2.045 

0.04623 

0.346 

88 

0.005542 

1.714 

1.516 

0.01921 

0.03386 

89 

0.03351 

3.648 

3.171 

0.04997 

0.261 

90 

0.02245 

3.323 

2.932 

0.04503 

0.319 

91 

0.02436 

1.729 

1.558 

0.03794 

0.194 

MEAN 

0.025202 

2.37125 

2.114 

0.043431 

0.270424 


ORGP 

84 

0.09169 

1.342 

1.154 

0.23373 

0.5088 

85 

0.06307 

2.445 

2.097 

0.159 

0.49343 

86 

0.019928 

0.2823 

0.2111 

0.06042 

0.09434 

87 

0.05618 

1.534 

1.222 

0.13568 

0.37471 

88 

0.014893 

0.1359 

0.08493 

0.05777 

0.051357 

89 

0.06519 

0.7911 

0.5962 

0.14257 

0.29097 

90 

0.052576 

1.129 

0.9516 

0.13038 

0.34874 

91 

0.046057 

0.8444 

0.6442 

0.1166 

0.21836 

MEAN 

0.051198 

1.062963 

0.870129 

0.129519 

0.297588 


Appendix A Shenandoah Model Segments Results 



:-Impervious-> 

Total 

HAY 

ANML 

RES 

Load 

1.095 

259.1135 

1.08 

0.825557 

0.4179 

253.8161 

0.969 

0.422789 

0.2016 

143.745 

1.02 

0.311099 

0.4339 

255.5246 

1.05 

0.503197 

0.1643 

160.2792 

0.992 

0.285346 

1.778 

256.1574 

1.13 

0.83728 

0.5075 

233.8467 

1.07 

0.628957 

0.5511 

194.4052 

1.02 

0.430806 

0.643663 

219.611 

1.041375 

0.530629 

4.943 

64.77838 

2.38 

4.597364 

3.018 

63.45402 

2.13 

4.143449 

1.877 

35.93626 

2.23 

2.378793 

3.762 

63.88116 

2.32 

3.774117 

2.292 

40.0698 

2.18 

2.931977 

4.533 

64.03936 

2.47 

4.880428 

3.554 

58.46167 

2.35 

4.367126 

3.002 

48.6013 

2.25 

3.397152 

3.372625 

54.90275 

2.28875 

3.808801 

2.127 

1554.681 

3.39836 

2.216107 

2.138 

1522.896 

3.06446 

2.239588 

0.3088 

862.4703 

3.21286 

0.726564 

1.911 

1533.148 

3.33529 

1.867382 

0.07174 

961.6753 

3.13495 

0.65788 

1.078 

1536.945 

3.55789 

1.594748 

1.757 

1403.08 

3.37239 

1.679327 

0.7028 

1166.431 

3.23883 

1.264224 

1.261792 

1317.666 

3.289379 

1.530728 


8.165001 

2267.243 

6.85836 

7.797283 

5.574 

2220.891 

6.16346 

6.960608 

2.388 

1257.769 

6.46286 

3.504311 

6.107 

2235.841 

6.70529 

6.300593 

2.528 

1402.443 

6.30695 

3.972853 

7.389 

2241.378 

7.15789 

7.468742 

5.819 

2046.159 

6.79239 

6.817943 

4.256 

1701.045 

6.50883 

5.210565 

5.27825 

1921.596 

6.619503 

6.004112 

1.489 

64.77838 

0.481 

0.482064 

0.705 

63.45402 

0.433 

0.308141 

0.4387 

35.93626 

0.454 

0.193651 

0.9761 

63.88116 

0.471 

0.360754 

0.2528 

40.0698 

0.443 

0.180628 

1.699 

64.03936 

0.503 

0.528813 

0.9746 

58.46167 

0.477 

0.417551 

1.182 

48.6013 

0.458 

0.322861 

0.96465 

54.90275 

0.465 

0.349308 

0.5728 

259.1135 

0.48548 

0.405594 

0.5998 

253.8161 

0.43778 

0.446682 

0.08567 

143.745 

0.45898 

0.125145 

0.5226 

255.5246 

0.47647 

0.357039 

0.01926 

160.2792 

0.44785 

0.107852 

0.2994 

256.1574 

0.50827 

0.282817 

0.4902 

233.8467 

0.48177 

0.316878 

0.1917 

194.4052 

0.46269 

0.227174 

3.347679 

219.611 

0.469911 

0.283648 


A35 




Segment 190 






_ 




TP 

84 

FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Load 

0.14224 

3.733 

3.883 

0.30863 

0.9798 

2.061 

453.4486 

0.96648 

0.940211 

85 

0.08952 

4.639 

3.711 

0.21313 

0.95443 

1.305 

444.1781 

0.87078 

0.806397 

86 

0.029308 

1.801 

1.558 

0.08046 

0.17187 

0.5244 

251.5538 

0.91298 

0.347996 

87 

0.08555 

3.985 

3.267 

0.18191 

0.72071 

1.499 

447.1681 

0.94747 

0.769749 

88 

0.020435 

1.85 

1.601 

0.07698 

0.085217 

0.2721 

280.4886 

0.89085 

0.321058 

89 

0.0987 

4.439 

3.767 

0.19254 

0.55197 

1.998 

448.2755 

1.01127 

0.863618 

90 

0.075026 

4.452 

3.884 

0.17541 

0.66774 

1.465 

409.2317 

0.95877 

0.781989 

91 

0.070417 

2.574 

2.202 

0.15454 

0.41236 

1.374 

340.2091 

0.92069 

0.589575 

MEAN 

0.076399 

3.434125 

2.984125 

0.17295 

0.568012 

1.312312 

384.3192 

0.934911 

0.677574 

BOO 

84 

5.19 

108.3 

65.10001 

13.23 

28.8 

39.9 

4534.486 

27.48 

20.43703 

85 

3.57 

240.9 

142.2 

9.0 

27.93 

40.5 

4441.781 

24.78 

25.49944 

86 

1.128 

19.74 

11.46 

3.42 

5.34 

6.210001 

2515.538 

25.98 

5.020105 

87 

3.18 

140.7 

79.8 

7.68 

21.21 

36.9 

4471.681 

26.97 

18.75764 

88 

0.843 

12.96 

8.820001 

3.27 

2.907 

2.466 

2804.886 

25.35 

4.04411 

89 

3.69 

75.3 

46.2 

8.070001 

16.47 

21.99 

4482.755 

28.77 

13.85227 

90 

2.976 

113.1 

68.10001 

7.380001 

19.74 

33.6 

4092.317 

27.27 

16.73508 

91 

2.607 

74.7 

38.7 

6.6 

12.36 

13.95 

3402.091 

26.19 

10.84844 

MEAN 

2.898 

98.2125 

57.5475 

7.33125 

16.84463 

24.4395 

3843.192 

26.59875 

14.39926 

SED 

84 

0.161 

1.39 

1.01 

0.377 

0.291 

0.764 

0.0 

0.0 

0.356806 

85 

0.07501 

2.37 

1.72 

0.247 

0.285 

0.751 

0.0 

0.0 

0.341761 

86 

0.03091 

0.277 

0.175 

0.0886 

0.04231 

0.111 

0.0 

0.0 

0.066071 

87 

0.07149 

1.56 

1.05 

0.208 

0.211 

0.682 

0.0 

0.0 

0.265757 

88 

0.01559 

0.146 

0.07836 

0.08145 

0.01251 

0.03172 

0.0 

0.0 

0.037465 

89 

0.08934 

0.807 

0.517 

0.213 

0.149 

0.391 

0.0 

0.0 

0.192556 

90 

0.06207 

1.12 

0.806 

0.197 

0.191 

0.619 

0.0 

0.0 

0.227513 

91 

0.06088 

0.862 

0.553 

0.18 

0.115 

0.255 

0.0 

0.0 

0.155599 

MEAN 

0.070786 

1.0665 

0.73867 

0.199006 

0.162103 

0.45059 

0.0 

0.0 

0.205441 


A36 


Appendix A Shenandoah Model Segments Results 





Segment 200 


< 

NH3 

FOR 

HTC 

LTC PAS 

URB 

HAY 

:-Impervious-> 

ANML RES 

Total 

Load 

84 

0.05779 

3.9 

3.735 

0.118 

0.57 

0.8697 

228.8566 

1.38 

0.518301 

85 

0.04321 

1.907 

1.613 

0.06504 

0.206 

0.1763 

203.4 

1.28 

0.263629 

86 

0.02965 

2.931 

2.716 

0.0435 

0.13 

0.2751 

127.8527 

1.32 

0.302379 

87 

0.03721 

3.415 

2.584 

0.06537 

0.211 

0.252 

212.675 

1.37 

0.349625 

88 

0.02937 

1.841 

1.751 

0.0371 

0.121 

0.1399 

141.7562 

1.26 

0.224479 

89 

0.03945 

3.072 

2.567 

0.06877 

0.232 

0.5771 

194.6222 

1.45 

0.372315 

90 

0.04685 

3.998 

4.945 

0.08391 

0.293 

0.2912 

222.158 

1.41 

0.475716 

91 

0.03502 

1.729 

1.606 

0.04402 

0.119 

0.3357 

135.7537 

1.33 

0.240112 

MEAN 

0.039819 

2.849125 

2.689625 

0.065714 

0.23525 

0.364625 

183.3843 

1.35 

0.34332 

N03 

84 

1.48 

14.99 

12.58 

6.03 

7.57 

4.648 

57.21416 

2.54 

4.02192 

85 

1.31 

10.81 

9.488 

4.92 

4.99 

2.003 

50.85 

2.35 

3.0238 

86 

0.927 

8.632 

6.323 

3.12 

3.31 

1.682 

31.96318 

2.41 

2.090789 

87 

0.986 

12.33 

8.809 

3.98 

4.39 

2.686 

53.16876 

2.5 

2.687831 

88 

0.778 

14.76 

12.73 

2.94 

3.26 

1.95 

35.43906 

2.3 

2.39865 

89 

0.912 

19.14 

16.97 

4.15 

4.71 

3.338 

48.65554 

2.65 

3.263272 

90 

1.31 

13.55 

14.01 

5.12 

5.59 

3.063 

55.5395 

2.58 

3.461941 

91 

1.12 

8.001 

5.59 

3.49 

3.58 

2.263 

33.93842 

2.44 

2.311934 

MEAN 

1.102875 

12.77663 

10.8125 

4.21875 

4.675 

2.704125 

45.84608 

2.47125 

2.907517 

ORGN 

84 

0.52311 

5.729 

4.267 

1.60272 

4.0439 

2.017 

1373.14 

3.31674 

1.888529 

85 

0.228165 

1.607 

1.266 

0.65296 

1.19091 

0.5983 

1220.4 

3.07188 

0.933074 

86 

0.H1671 

0.7419 

0.498 

0.41923 

0.7049 

0.1667 

767.1164 

3.16092 

0.546994 

87 

0.188097 

1.998 

1.289 

0.76055 

1.2985 

0.4436 

1276.05 

3.27593 

0.959265 

88 

0.116865 

1.166 

0.7228 

0.280476 

0.64183 

0.1917 

850.5375 

3.01252 

0.560918 

89 

0.267862 

2.503 

1.595 

0.80507 

1.45061 

0.5332 

1167.733 

3.47256 

1.021647 

90 

0.335384 

4.138 

3.017 

1.01654 

1.87355 

1.601 

1332.948 

3.37239 

1.390915 

91 

0.089782 

1.637 

1.228 

0.365806 

0.58247 

0.5522 

814.5221 

3.1906 

0.623856 

MEAN 

0.232617 

2.439987 

1.73535 

0.737919 

1.473334 

0.762962 

1100.306 

3.234192 

0.99065 


TN 


84 

2.0609 

24.62 

85 

1.581375 

14.32 

86 

1.068321 

12.3 

87 

1.211307 

17.74 

88 

0.924235 

17.76 

89 

1.219312 

24.71 

90 

1.692234 

21.68 

91 

1.244802 

11.37 

MEAN 

1.375311 

18.0625 

P04 

84 

0.01275 

1.565 

85 

0.004142 

1.614 

86 

0.002498 

1.497 

87 

0.003925 

1.924 

88 

0.002625 

1.743 

89 

0.006005 

2.582 

90 

0.007046 

2.462 

91 

0.001943 

1.107 

MEAN 

0.005117 

1.81175 

ORGP 

84 

0.07473 

1.61 

85 

0.032595 

0.4525 

86 

0.015953 

0.2056 

87 

0.026871 

0.564 

88 

0.016695 

0.3305 

89 

0.038266 

0.7043 

90 

0.047912 

1.171 

91 

0.012826 

0.4608 

MEAN 

0.033231 

0.687338 


20.58 

7.75072 

12.1839 

7.535' 

2002.496 

7.23674 

6.540712 

12.37 

5.638 

6.38691 

2.778 

1779.75 

6.70188 

4.320075 

9.537 

3.58273 

4.1449 

2.123 

1118.711 

6.89092 

3.002506 

12.68 

4.80592 

5.8995 

3.382 

1860.907 

7.14593 

4.100669 

15.2 

3.257576 

4.02283 

2.281 

1240.367 

6.57252 

3.253017 

21.13 

5.02384 

6.39261 

4.448 

1702.944 

7.572559 

4.752223 

21.97 

6.22045 

7.75655 

4.955 

1943.882 

7.36239 

5.437018 

8.425 

3.899826 

4.28147 

3.15 

1187.845 

6.9606 

3.242349 

15.2365 

5.022383 

6.383584 

3.8315 

1604.613 

7.055442 

4.331071 

1.612 

0.07378 

0.545 

1.084 

57.21416 

0.472 

0.294262 

1.25 

0.03355 

0.15 

0.3016 

50.85 

0.437 

0.162422 

1.253 

0.01954 

0.08389 

0.5273 

31.96318 

0.449 

0.169414 

1.607 

0.0365 

0.167 

0.6235 

53.16876 

0.466 

0.220478 

1.638 

0.01425 

0.07615 

0.247 

35.43906 

0.428 

0.160325 

2.399 

0.03844 

0.187 

0.8657 

48.65554 

0.494 

0.294695 

2.366 

0.04843 

0.244 

0.7757 

55.5395 

0.479 

0.288802 

0.9238 

0.01823 

0.06614 

0.8538 

33.93842 

0.454 

0.180046 

1.6311 

0.03534 

0.189898 

0.659825 

45.84608 

0.459875 

0.221306 

1.138 

0.22896 

0.5777 

0.5464 

228.8566 

0.47382 

0.348405 

0.3392 

0.09328 

0.17013 

0.1655 

203.4 

0.43884 

0.163035 

0.1333 

0.05989 

0.1007 

0.0456 

127.8527 

0.45156 

0.091365 

0.3445 

0.10865 

0.1855 

0.1198 

212.675 

0.46799 

0.166286 

0.1942 

0.040068 

0.09169 

0.05159 

141.7562 

0.43036 

0.097044 

0.426 

0.11501 

0.20723 

0.1462 

194.6222 

0.49608 

0.179011 

0.8096 

0.14522 

0.26765 

0.4432 

222.158 

0.48177 

0.261161 

0.3279 

0.052258 

0.08321 

0.1478 

135.7537 

0.4558 

0.114429 

0.464087 

0.105417 

0.210476 

0.208261 

183.3843 

0.462027 

0.177592 


Appendix A Shenandoah Model Segments Results 


A37 




Segment 200 

<---Pervious 



FOR 

HTC 

LTC 

PAS 

URB 

TP 

84 

0.08748 

3.175 

2.75 

0.30274 

1.1227 

85 

0.036737 

2.067 

1.59 

0.12683 

0.32013 

86 

0.018451 

1.703 

1.386 

0.07943 

0.18459 

87 

0.030796 

2.488 

1.951 

0.14515 

0.3525 

88 

0.01932 

2.073 

1.832 

0.054318 

0.16784 

89 

0.044271 

3.286 

2.825 

0.15345 

0.39423 

90 

0.054958 

3.633 

3.176 

0.19365 

0.51165 

91 

0.014769 

1.567 

1.252 

0.070488 

0.14935 

MEAN 0.038348 

2.499 

2.09525 

0.140757 

0.400374 

BOD 

84 

4.23 

130.5 

59.1 

12.96 

32.7 

85 

1.845 

41.7 

22.77 

5.28 

9.63 

86 

0.903 

14.7 

7.68 

3.39 

5.7 

87 

1.521 

44.7 

19.95 

6.15 

10.5 

88 

0.945 

23.94 

13.47 

2.268 

5.19 

89 

2.166 

57.6 

28.23 

6.510001 

11.73 

90 

2.712 

109.8 

50.1 

8.22 

15.15 

91 

0.726 

31.5 

14.73 

2.958 

4.71 

MEAN 

1.881 

56.805 

27.00375 

5.967 

11.91375 

SED 

84 

0.15 

1.66 

0.99 

0.351 

0.524 

85 

0.03882 

0.461 

0.292 

0.129 

0.125 

86 

0.02627 

0.209 

0.114 

0.0828 

0.07266 

87 

0.03697 

0.585 

0.302 

0.159 

0.147 

88 

0.02868 

0.341 

0.171 

0.04936 

0.06394 

89 

0.0604 

0.717 

0.371 

0.168 

0.167 

90 

0.06652 

1.17 

0.686 

0.215 

0.221 

91 

0.01242 

0.475 

0.285 

0.06751 

0.05166 

MEAN 

0.05251 

0.70225 

0.401375 

0.152709 

0.171532 


A38 



-Impervious-> 

Total 

HAY 

ANML 

RES 

Load 

1.631 

400.4991 

0.94582 

0.680056 

0.4672 

355.95 

0.87584 

0.358685 

0.5729 

223.7423 

0.90056 

0.281631 

0.7433 

372.1813 

0.93399 

0.421432 

0.2986 

248.0734 

0.85836 

0.28047 

1.012 

340.5888 

0.99008 

0.505452 

1.219 

388.7765 

0.96077 

0.586223 

1.002 

237.5689 

0.9098 

0.316649 

0.86825 

320.9225 

0.921903 

0.428825 

51.9 

4004.991 

26.82 

19.84063 

18.84 

3559.5 

24.84 

8.18682 

3.99 

2237.423 

25.56 

3.774508 

12.12 

3721.813 

26.49 

7.614143 

6.57 

2480.734 

24.36 

4.299249 

18.12 

3405.888 

28.08 

9.306361 

50.7 

3887.765 

27.27 

15.94561 

11.31 

2375.689 

25.8 

5.052822 

21.69375 

3209.225 

26.1525 

9.252518 


0.722 

0.0 

0.0 

0.346786 

0.219 

0.0 

0.0 

0.103781 

0.06218 

0.0 

0.0 

0.053642 

0.166 

0.0 

0.0 

0.109187 

0.07286 

0.0 

0.0 

0.05329 

0.198 

0.0 

0.0 

0.134163 

0.566 

0.0 

0.0 

0.213807 

0.2 

0.0 

0.0 

0.069549 

0.275755 

0.0 

0.0 

0.135526 


Appendix A Shenandoah Model Segments Results 





Appendix B 

West Branch Susquehanna Model 
Segments Results 


Simulated and Observed Flow at Reach 70 

Frequency Analysis of Flow at Reach 70 

Comparison of Annual Total Observed and Simulated Flow Volume 

Simulated and Observed Sediment Concentration at Reach 70 

Simulated and Observed Water Temperature at Reach 70 

Simulated and Observed DO at Reach 70 

Simulated and Observed Nitrate-N Concentration at Reach 70 

Simulated and Observed Ammonia-N Concentration at Reach 70 

Simulated and Observed Organic-N Concentration at Reach 70 

Simulated and Observed Total-N Concentration at Reach 70 

Simulated and Observed P0 4 -P Concentration at Reach 70 

Simulated and Observed Organic-P Concentration at Reach 70 

Simulated and Observed Total-P Concentration at Reach 70 

Simulated and Observed TOC Concentration at Reach 70 

Simulated Chlorophyll A Concentration at Reach 70 

Simulated BOD Concentration at Reach 70 

Simulated Benthic Algae Concentration at Reach 70 

AGCHEM Summary for West Branch Susquehanna Basin (Hi-Till), PERLND 52 
AGCHEM Summary for West Branch Susquehanna Basin (Low-Till), PERLND 53 
AGCHEM Summary for West Branch Susquehanna Basin (HAY), PERLND 56 
AGCHEM Summary for West Branch Susquehanna Basin (Hi-Till), PERLND 62 
AGCHEM Summary for West Branch Susquehanna Basin (Low-Till), PERLND 63 
AGCHEM Summary for West Branch Susquehanna Basin (HAY), PERLND 66 
AGCHEM Summary for West Branch Susquehanna Basin (Hi-Till), PERLND 72 
AGCHEM Summary for West Branch Susquehanna Basin (Low-Till), PERLND 73 
AGCHEM Summary for West Branch Susquehanna Basin (HAY), PERLND 76 

Per Acre Load Contributed from Each Land Use in West Branch Susquehanna Basin 
(lb/ac) 

Percent of Total Load Contributed from Each Land Use in West Branch Susquehanna 
Basin 


Appendix B 


B1 



SIM FLOW 
OBS FLOW 



WEST BRANCH SUSQUEHANNA RIVER AT LEWISBURG, PA 




















CHESAPEAKE BAY WATERSHED HYDROLOGIC CALIBRATION 
COMPARISON OF ANNUAL TOTAL OBSERVED vs SIMULATED FLOW 

PHASE III 


WEST BRANCH SUSQUEHANNA RIVER AT LEWISBURG, PA(SEGMENT 70) 


YEAR 

OBSERVED* 

SIMULATED 


FLOW (in) 

FLOW (in) 

1984 

28.32 

26.28 

1985 

18.82 

17.22 ■ 

1986 

23.38 

22.23 

1987 

17.99 

17.58 

1988 

14.89 

15.19 

1989 

20.89 

20.93 

1990 

26.93 

25.94 

1991 

14.89 

15.84 

MEAN 

20.76 

20.15 


* - Observed Flow at WB Susquehanna River at Lewisburg, PA 
** - Simulated Outflow from RCH 70 


B4 


Appendix B West Branch Model Segments Results 



200000 



O o CM ^ tO CO O CM *rf- CO CO 

O cor-^coLr>^t--^-rocM-r— 


(sjo)mou Von ni onoo Q3s 


Appendix B West Branch Susquehanna Model Segments Results 


SIMULATED AND OBSERVED SEDIMENT C0NC AT REACH 70 
WEST BRANCH SUSQUEHANNA RIVER AT LEW ISBURG, PA 











































O CO (O 

l/9« Ni oa 


01 <=> 


Appendix B West Branch Susquehanna Model Segments Results 


1984 1985 1986 1987 1988 1989 1990 

SIMULATED AND OBSERVED DO AT REACH 70 

WST BRANCH SUSQUEHANNA RIVER AT LEW ISBURG. PA 





200000 




(SJO)MOU 


l/OM NI N-CON 



B8 


Appendix B West Branch Model Segments Results 


WEST BRANCH SUSQUEHANNA RIVER AT LEWISBURG, PA 






200000 



Appendix B West Branch Susquehanna Model Segments Results 


•II’ 


WEST BRANCH SUSQUEHANNA RIVER AT LEW ISBURG, PA 








200000 



BIO 


Appendix B West Branch Model Segments Results 


WEST BRANCH SUSQUEHANNA RIVER AT LEWISBURG, PA 













200000 



o 

CD 


O O 

CO 


CO 

ro 


CD 


oo 


CD 


o 


(sjo)mou 


l/OH NI d-tOd 


B12 


Appendix B West Branch Model Segments Results 

















200000 



Appendix B West Branch Susquehanna Model Segments Results 


SIMULATED AND OBSERVED ORGANIC P AT REACH 70 
WEST BRANCH SUSQUEHANNA RIVER AT LEW ISBURG, PA 

































200000 


* I I I I I I 




(sjo)moi j 


1/3 n NI 001 


Appendix B West Branch Susquehanna Model Segments Results 


SIMULATED AND OBSERVED TOC AT REACH 70 

WEST BRANCH SUSQUEHANNA RIVER AT LEW ISBURG. PA 






200000 


a> 

<yi 



O 

cn 



to 

oo 

CD 


oo 

CD 


O CP 
UP 


{SJOjMOU 


UP O UP 

CNI 04 


1/30 NI V 1H0 


Appendix B West Branch Model Segments Results 


WEST BRANCH SUSQUEHANNA RIVER AT LEW ISBURG, PA 















BRANCH SUSQUEHAN 
















LEWISBURG, PA 






















AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (HI-TILL), SEGMENT 52 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

48.55 

42.61 

50.40 

41.90 

45.86 

Runoff (in) 

Surface 

11.41 

8.513 

14.62 

8.522 

10.77 

Interflow 

7.745 

6.901 

6.827 

6.048 

6.880 

Baseflow 

7.994 

8.258 

7.484 

7.090 

7.707 

Total 

27.14 

23.67 

28.93 

21.66 

25.35 

Sediment Loss (t/a) 

0.5620 

0.3100 

0.5170 

0.2800 

0.4172 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

1.362 

0.6127 

1.377 

1.285 

1.159 

Interflow 

14.81 

6.571 

5.982 

10.99 

9.588 

Baseflow 

6.415 

4.427 

5.556 

3.812 

5.053 

Total 

22.59 

11.61 

12.92 

16.08 

15.80 

NH3 Loss 

Surface 

2.415 

1.264 

3.191 

7.690 

3.640 

Interflow 

1.886 

1.660 

1.262 

1.853 

1.665 

Baseflow 

0.8506E-01 

0.6147E-01 

0.4248E-01 

0.3398E-01 

0.5575E-01 

Sediment 

0.6463E-02 

0.3276E-02 

0.6014E-02 

0.4239E-02 

0.4998E-02 

Total 

4.393 

2.989 

4.501 

9.582 

5.366 

ORGN Sediment 

1.822 

1.005 

1.691 

0.8992 

1.354 

Total N Loss (Ib/a) 

28.81 

15.61 

19.11 

26.56 

22.52 

P04 Loss 

Surface 

0.4987 

0.4324 

0.8808 

0.6483 

0.6151 

Interflow 

0.3967 

0.2019 

0.2091 

0.1526 

0.2401 

Baseflow 

0.2258E-02 

0.1243E-03 

0.4387E-04 

0.8535E-05 

0.6087E-03 

• Sediment 

0.2285E-01 

0.1306E-01 

0.2272E-01 

0.1235E-01 

0.1775E-01 

Total 

0.9205 

0.6475 

1.113 

0.8133 

0.8736 

ORGP Sediment 

0.5055 

0.2783 

0.4686 

0.2496 

0.3755 

Total P Loss (Ib/a) 

1.426 

0.9258 

1.581 

1.063 

1.249 

Atm Depn. N03 (Ib/a) 

8.929 

8.620 

8.908 

8.515 

8.743 

Atm Depn. NH4 (Ib/a) 

2.511 

2.212 

2.467 

2.313 

2.376 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

71.03 

72.97 

72.97 

72.97 

72.49 

Nitrate appln.(Ib/a) 

18.74 

19.39 

19.39 

19.39 

19.23 

ORGN appln.(Ib/a) 

18.30 

18.30 

18.30 

18.30 

18.30 

Total N appln.(Ib/a) 

108.1 

110.7 

110.7 

110.7 

110.0 

P04-p appln.(Ib/a) 

19.86 

20.97 

20.97 

20.97 

20.69 

ORGP appln.(lb/a) 

3.900 

3.900 

3.900 

3.900 

3.900 

Total P appln.(Ib/a) 

23.76 

24.87 

24.87 

24.87 

24.59 

Plant Uptake (lb/a) 

Nitrogen 

Surface 

0.7000E-02 

0.3000E-02 

0.6000E-02 

0.5000E-02 

0.5250E-02 

Upper 

54.97 

67.04 

61.55 

59.44 

60.75 

Lower 

36.17 

45.92 

46.72 

37.53 

41.59 

Total 

91.15 

113.0 

108.3 

96.98 

102.3 

Phosphorus 

Surface 

0.7000E-02 

0.2000E-02 

0.5000E-02 

0.5000E-02 

0.4750E-02 

Upper 

15.22 

16.58 

16.12 

15.69 

15.90 

Lower 

3.753 

3.752 

3.752 

3.276 

3.633 

Total 

18.98 

20.34 

19.87 

18.97 

19.54 

Deficit (lb/a) 

Nitrogen 

Surface 

1.194 

1.198 

1.195 

1.195 

1.196 

Upper 

16.84 

4.793 

10.29 

12.38 

11.08 

Lower 

- 10.99 

1.236 

0.4325 

9.626 

5.571 

Total 

29.02 

7.227 

11.92 

23.20 

17.84 

Phosphorus 

Surface 

1.244 

1.248 

1.245 

1.246 

1.246 

Upper 

4.802 

3.430 

3.909 

4.340 

4.120 

Lower 

0.0000 

0.0000 

0.0000 

0.4762 

0.1190 

Total 

6.046 

4.678 

5.154 

6.062 

5.485 

Other Fluxes-Ib/ac 

N Mineralization 

27.43 

37.07 

33.66 

30.34 

32.13 

P Mineralization 

1.215 

1.298 

1.196 

1.149 

1.214 

Denitrification 

1.076 

1.020 

1.324 

0.7722 

1.048 

N Immobilization 

9.051 

11.27 

11.47 

9.617 

10.35 

P Immobilization 

5.673 

4.567 

4.716 

5.068 

5.006 


Appendix B West Branch Susquehanna Model Segments Results 


B19 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (HI-TILL), SEGMENT 52 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

38.64 

42.72 

51.99 

35.98 

42.33 

Runoff (in) 

Surface 

6.852 

9.980 

11.71 

6.068 

8.654 

Interflow 

, 6.557 

7.676 

9.391 

6.871 

7.624 

Baseflow 

7.389 

8.146 

9.284 

6.222 

7.760 

Total 

20.80 

25.80 

30.39 

19.16 

24.04 

Sediment Loss (t/a) 

0.1660 

0.2160 

0.3940 

0.1060 

0.2205 

Nutrient Loss (Ib/a) 
N03 Loss 

Surface 

0.7288 

2.699 

1.032 

0.8512 

1.328 

Interflow 

12.82 

13.62 

14.63 

4.580 

11.41 

Baseflow 

3.661 

1.963 

3.594 

3.012 

3.057 

Total 

17.21 

18.28 

19.26 

8.443 

15.80 

NH3 Loss 

Surface 

2.778 

6.436 

3.770 

0.9556 

3.485 

Interflow 

1.974 

2.734 

2.625 

1.900 

2.308 

Baseflow 

0.3364E-01 

0.3374E-01 

0.3588E-01 

0.2426E-01 

0.3188E- 

Sediment 

0.1789E-02 

0.2792E-02 

0.4402E-02 

0.1214E-02 

0.2549E- 

Total 

4.787 

9.207 

6.435 

2.881 

5.828 

ORGN Sediment 

0.5055 

0.6369 

1.258 

0.3032 

0.6759 

Total N Loss (Ib/a) 

22.51 

28.12 

26.95 

11.63 

22.30 

P04 Loss 

Surface 

0.4979 

0.6728 

0.8248 

0.2594 

0.5637 

Interflow 

0.2731 

0.2588 

0.3723 

0.1774 

0.2704 

Baseflow 

0.1715E-05 

0.1065E-05 

0.1982E-05 

0.1361E-05 

0.1531E-I 

Sediment 

0.7119E-02 

0.8955E-02 

0.1698E-01 

0.3991E-02 

0.9261E-I 

Total 

0.7781 

0.9406 

1.214 

0.4408 

0.8434 

ORGP Sediment 

0.1402 

0.1766 

0.3496 

0.8413E-01 

0.1876 

Total P Loss (Ib/a) 

0.9182 

1.117 

1.564 

0.5249 

1.031 

Atm Depn. N03 (Ib/a) 

8.061 

8.736 

8.982 

7.794 

8.393 

Atm Depn. NH4 (Ib/a) 

1.965 

2.426 

2.487 

1.790 

2.167 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

72.21 

66.92 

72.97 

71.89 

71.00 

Nitrate appln.(lb/a) 

19.14 

17.37 

19.39 

19.03 

18.73 

ORGN appln.(lb/a) 

18.30 

18.30 

18.30 

18.30 

18.30 

Total N appln.(lb/a) 

109.7 

102.6 

110.7 

109.2 

108.0 

P04-p appln.(lb/a) 

20.54 

17.49 

20.97 

20.97 

19.99 

ORGP appln.(lb/a) 

3.900 

3.900 

3.900 

3.900 

3.900 

Total P appln.(lb/a) 

24.44 

21.39 

24.87 

24.87 

23.89 


Plant Uptake (Ib/a) 
Nitrogen 


Surface 

0.8000E-02 

0.1300E-01 

0.1800E-01 

0.7000E-02 

0.1150E- 

Upper 

57.95 

55.60 

60.92 

65.81 

60.07 

Lower 

43.08 

25.96 

36.25 

43.98 

37.32 

Total 

101.0 

81.57 

97.19 

109.8 

97.40 

Phosphorus 

Surface 

0.8000E-02 

0.1100E-01 

0.1500E-01 

0.8000E-02 

0.1050E- 

Upper 

15.87 

13.71 

15.49 

15.73 

15.20 

Lower 

0.5360 

0.3570 

0.4290 

0.2960 

0.4045 

Total 

16.41 

14.08 

15.93 

16.03 

15.61 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.193 

1.188 

1.183 

1.193 

1.189 

Upper 

13.86 

16.19 

10.90 

5.987 

11.73 

Lower 

4.091 

21.19 

10.91 

3.184 

9.844 

Total 

19.15 

38.57 

22.99 

10.36 

22.77 

Phosphorus 

Surface 

1.243 

1.240 

1.236 

1.243 

1.240 

Upper 

4.152 

6.305 

4.521 

4.284 

4.816 

Lower 

3.217 

3.395 

3.323 

3.456 

3.348 

Total 

8.611 

10.94 

9.080 

8.983 

9.403 

Other Fluxes-Ib/ac 

N Mineralization 

32.19 

23.11 

28.73 

34.24 

29.57 

P Mineralization 

0.9393 

0.7716 

0.8533 

0.8425 

0.8517 

Denitrification 

0.7602 

0.2988 

0.5341 

0.8270 

0.6050 

N Immobilization 

10.37 

8.788 

10.22 

10.71 

10.02 

P Immobilization 

4.677 

3.221 

5.449 

3.384 

4.183 


B20 


Appendix B West Branch Model Segments Results 



AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (LOW-TILL), SEGMENT 53 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

48.55 

42.61 

50.40 

41.90 

45.86 

Runoff (in) 

Surface 

9.731 

7.199 

13.47 

7.172 

9.394 

Interflow 

7.852 

7.152 

6.880 

6.201 

7.021 

Baseflow 

8.471 

8.693 

7.822 

7.588 

8.144 

Total 

26.05 

23.04 

28.18 

20.96 

24.56 

Sediment Loss (t/a) 

0.3230 

0.1740 

0.3050 

0.1560 

0.2395 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.8141 

0.4797 

1.595 

1.191 

1.020 

Interflow 

18.15 

6.036 

7.984 

14.42 

11.65 

Baseflow 

6.224 

5.576 

8.628 

5.258 

6.422 

Total 

25.19 

12.09 

18.21 

20.87 

19.09 

NH3 Loss 

Surface 

2.669 

1.018 

3.063 

10.65 

4.350 

Interflow 

1.703 

1.605 

1.232 

1.879 

1.605 

Baseflow 

0.8760E-01 

0.6111E-01 

0.4186E-01 

0.3343E-01 

0.5600E-01 

Sediment 

0.3593E-02 

0.1785E-02 

0.3601E-02 

0.2049E-02 

0.2757E-02 

Total 

4.463 

2.686 

4.340 

12.56 

6.012 

ORGN Sediment 

1.289 

0.6908 

1.215 

0.6050 

0.9499 

Total N Loss (Ib/a) 

30.94 

15.47 

23.76 

34.04 

26.05 

P04 Loss 

Surface 

0.6020 

0.4493 

1.067 

0.7196 

0.7095 

Interflow 

0.3963 

0.1227 

0.1398 

0.1110 

0.1925 

Baseflow 

0.2268E-02 

0.1134E-03 

0.2596E-04 

0.2207E-05 

0.6024E-03 


Sediment 

0.1303E-01 

0.7198E-02 

0.1324E-01 

0.6673E-02 

0.1004E-01 

Total 

1.014 

0.5793 

1.220 

0.8372 

0.9126 

ORGP Sediment 

0.3438 

0.1839 

0.3239 

0.1615 

0.2533 

Total P Loss (Ib/a) 

1.357 

0.7633 

1.544 

0.9987 

1.166 

Atm Depn. N03 (Ib/a) 

8.929 

8.620 

8.908 

8.515 

8.743 

Atm Depn. NH4 (Ib/a) 

2.511 

2.212 

2.467 

2.313 

2.376 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

82.04 

84.57 

84.57 

84.57 

83.94 

Nitrate appln.(lb/a) 

21.89 

22.73 

22.73 

22.73 

22.52 

ORGN appln.(lb/a) 

20.28 

20.28 

20.28 

20.28 

20.28 

Total N appln.(lb/a) 

124.2 

127.6 

127.6 

127.6 

126.7 

P04-p appln.(lb/a) 

22.71 

24.16 

24.16 

24.16 

23.80 

ORGP appln.(lb/a) 

4.320 

4.320 

4.320 

4.320 

4.320 

Total P appln.(lb/a) 

27.03 

28.48 

28.48 

28.48 

28.12 


Plant Uptake (Ib/a) 
Nitrogen 


Surface 

0.2700E-01 

0.1600E-01 

0.1800E-01 

0.2500E-01 

0.2150E 

Upper 

63.51 

76.53 

68.52 

64.34 

68.22 

Lower 

39.00 

51.09 

51.10 

41.64 

45.71 

Total 

102.5 

127.6 

119.6 

106.0 

114.0 

Phosphorus 

Surface 

0.2600E-01 

0.1600E-01 

0.1900E-01 

0.2500E-01 

0.2150E' 

Upper 

16.07 

17.73 

17.42 

16.19 

16.85 

Lower 

4.203 

4.202 

4.202 

1.660 

3.567 

Total 

20.30 

21.95 

21.64 

17.88 

20.44 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.274 

1.285 

1.283 

1.276 

1.280 

Upper 

14.31 

1.252 

9.307 

13.44 

9.577 

Lower 

12.11 

0.0000 

0.0000 

9.443 

5.388 

Total 

27.70 

2.536 

10.59 

24.16 

16.25 

Phosphorus 

Surface 

1.375 

1.385 

1.381 

1.376 

1.379 

Upper 

6.358 

4.688 

5.003 

6.219 

5.567 

Lower 

0.0000 

0.0000 

0.0000 

2.542 

0.6355 

Total 

7.733 

6.073 

6.384 

10.14 

7.582 

Other Fluxes-Ib/ac 

N Mineralization 

29.64 

40.99 

37.84 

32.69 

35.29 

P Mineralization 

1.344 

1.376 

1.330 

1.063 

1.278 

Denitrification 

1.029 

1.340 

1.888 

1.027 

1.321 

N Immobilization 

10.87 

13.27 

13.69 

11.02 

12.21 

P Immobilization 

8.571 

6.856 

6.724 

7.621 

7.443 


Appendix B West Branch Susquehanna Model Segments Results 


B21 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (LOW-TILL), SEGMENT 53 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

38.64 

42.72 

51.99 

35.98 

42.33 

Runoff (in) 

Surface 

5.555 

8.544 

9.494 

4.831 

7.106 

Interflow 

6.706 

8.005 

10.09 

7.338 

8.035 

Baseflow 

7.676 

8.616 

10.10 

6.528 

8.231 

Total 

19.94 

25.16 

29.69 

18.70 

23.37 

Sediment Loss (t/a) 

0.9098E-01 

0.1250 

0.2130 

0.5584E-01 

0.1212 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.4922 

2.295 

0.8653 

0.4140 

1.017 

Interflow 

14.77 

17.48 

19.35 

4.739 

14.08 

Baseflow 

3.452 

1.766 

3.905 

3.610 

3.183 

Total 

18.71 

21.54 

24.12 

8.763 

18.28 

NH3 Loss 

Surface 

1.780 

7.869 

4.196 

1.249 

3.773 

Interflow 

1.986 

3.006 

3.042 

2.134 

2.542 

Baseflow 

0.3125E-01 

0.3137E-01 

0.3504E-01 

0.2271E-01 

0.3009E-01 

Sediment 

0.9717E-03 

0.1567E-02 

0.2304E-02 

0.4519E-03 

0.1324E-02 

Total 

3.798 

10.91 

7.276 

3.406 

6.348 

ORGN Sediment 

0.3416 

0.4491 

0.8240 

0.1644 

0.4448 

Total N Loss (Ib/a) 

22.85 

32.90 

32.22 

12.33 

25.08 

P04 Loss 

Surface 

0.6491 

0.8713 

0.9914 

0.3149 

0.7067 

Interflow 

0.2583 

0.3054 

0.3271 

0.1147 

0.2514 

Baseflow 

0.1182E-05 

0.1117E-05 

0.1520E-05 

0.8517E-06 

0.1168E-05 

Sediment 

0.3965E-02 

0.5114E-02 

0.901IE-02 

0.1741E-02 

0.4958E-02 

Total 

0.9113 

1.182 

1.328 

0.4313 

0.9631 

ORGP Sediment 

0.9114E-01 

0.1197 

0.2207 

0.4381E-01 

0.1188 

Total P Loss (Ib/a) 

1.002 

1.301 

1.548 

0.4751 

1.082 

Atm Depn. N03 (Ib/a) 

8.061 

8.736 

8.982 

7.794 

8.393 

Atm Depn. NH4 (Ib/a) 

1.965 

2.426 

2.487 

1.790 

2.167 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

83.58 

76.66 

84.57 

84.00 

82.20 

Nitrate appln.(lb/a) 

22.40 

20.09 

22.73 

22.54 

21.94 

ORGN appln.(lb/a) 

20.28 

20.28 

20.28 

20.28 

20.28 

Total N appln.(lb/a) 

126.3 

117.0 

127.6 

126.8 

124.4 

P04-p appln.(lb/a) 

23.59 

19.62 

24.16 

24.16 

22.88 

ORGP appln.(lb/a) 

4.320 

4.320 

4.320 

4.320 

4.320 

Total P appln.(lb/a) 

27.91 

23.94 

28.48 

28.48 

27.20 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2400E-01 

0.4200E-01 

0.3300E-01 

0.2400E-01 

0.3075E-01 

Upper 

71.20 

62.26 

68.68 

73.07 

68.80 

Lower 

43.61 

26.47 

38.40 

51.09 

39.89 

Total 

114.8 

88.78 

107.1 

124.2 

108.7 

Phosphorus 

Surface 

0.2200E-01 

0.3800E-01 

0.3100E-01 

0.2600E-01 

0.2925E-01 

Upper 

16.90 

14.05 

15.48 

18.42 

16.21 

Lower 

0.3510 

0.3230 

0.3540 

0.2260 

0.3135 

Total 

17.27 

14.41 

15.87 

18.67 

16.56 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.277 

1.259 

1.267 

1.277 

1.270 

Upper 

6.596 

15.51 

9.142 

4.730 

8.995 

Lower 

7.474 

24.61 

12.70 

0.0000 

11.20 

Total 

15.35 

41.38 

23.10 

6.006 

21.46 

Phosphorus 

Surface 

1.379 

1.363 

1.370 

1.375 

1.372 

Upper 

5.517 

8.359 

6.931 

3.995 

6.201 

Lower 

3.852 

3.879 

3.849 

3.976 

3.889 

Total 

10.75 

13.60 

12.15 

9.346 

11.46 

Other Fluxes-Ib/ac 

N Mineralization 

33.37 

24.09 

30.88 

39.50 

31.96 

P Mineralization 

1.021 

0.8406 

0.9315 

0.9708 

0.9410 

Denitrification 

0.6947 

0.2655 

0.5547 

1.040 

0.6387 

N Immobilization 

12.24 

9.852 

12.17 

13.18 

11.86 

P Immobilization 

6.915 

4.863 

8.339 

4.807 

6.231 


B22 


Appendix B West Branch Model Segments Results 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (HAY), SEGMENT 56 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

48.55 

42.61 

50.40 

41.90 

45.86 

Runoff (in) 

Surface 

13.61 

9.611 

16.62 

9.778 

12.40 

Interflow 

7.807 

7.255 

7.199 

6.252 

7.128 

Baseflow 

7.588 

7.528 

6.847 

6.738 

7.175 

Total 

29.01 

24.39 

30.66 

22.77 

26.71 

Sediment Loss (t/a) 

0.2120 

0.1080 

0.1850 

0.1100 

0.1538 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

1.175 

0.7629 

0.8364 

0.7965 

0.8927 

Interflow 

5.120 

4.260 

4.467 

5.483 

4.832 

Baseflow 

10.18 

11.82 

11.49 

10.64 

11.03 

Total 

16.48 

16.84 

16.79 

16.92 

16.76 

NH3 Loss 

Surface 

2.037 

1.356 

0.8527 

1.534 

1.445 

Interflow 

0.4855 

0.6731 

0.3998 

0.6176 

0.5440 

Baseflow 

0.8280E-01 

0.6011E-01 

0.4489E-01 

0.3844E-01 

0.5656E-01 

Sediment 

0.2136E-02 

0.1179E-02 

0.1816E-02 

0.1123E-02 

0.1563E-02 

Total 

2.607 

2.090 

1.299 

2.192 

2.047 

ORGN Sediment 

0.5311 

0.2550 

0.4684 

0.2629 

0.3794 

Total N Loss (Ib/a) 

19.62 

19.19 

18.56 

19.38 

19.19 

P04 Loss 

Surface 

1.254- 

0.8639 

0.7595 

1.155 

1.008 

Interflow 

0.4134 

0.2488 

0.1827 

0.1632 

0.2520 

Baseflow 

0.2265E-02 

0.1620E-03 

0.1051E-03 

0.7318E-04 

0.6513E-03 

Sediment 

0.8326E-02 

0.4546E-02 

0.7399E-02 

0.4872E-02 

0.6286E-02 

Total 

1.678 

1.117 

0.9496 

1.323 

1.267 

ORGP Sediment 

0.1424 

0.6851E-01 

0.1261 

0.7086E-01 

0.1020 

Total P Loss (Ib/a) 

1.820 

1.186 

1.076 

1.394 

1.369 

Atm Depn. N03 (Ib/a) 

8.929 

8.620 

8.908 

8.515 

8.743 

Atm Depn. NH4 (Ib/a) 

2.511 

2.212 

2.467 

2.313 

2.376 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Armenia appln.(lb/a) 

22.51 

22.51 

22.51 

22.17 

22.43 

Nitrate appln.(lb/a) 

7.510 

7.510 

7.510 

7.397 

7.482 

ORGN appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total N appln.(lb/a) 

30.02 

30.02 

30.02 

29.57 

29.91 

P04-p appln.(lb/a) 

13.00 

13.00 

13.00 

12.81 

12.95 

ORGP appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total P appln.(lb/a) 

13.00 

13.00 . 

13.00 

12.81 

12.95 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.7000E-02 

0.4000E-02 

0.6000E-02 

0.5000E-02 

0.5500E-02 

Upper 

22.00 

22.79 

23.24 

20.53 

22.14 

Lower 

17.68 

17.68 

17.68 

17.68 

17.68 

Total 

39.69 

40.48 

40.92 

38.22 

39.83 

Phosphorus 

Surface 

0.110QE-01 

0.7000E-02 

0.1000E-01 

0.8000E-02 

0.9000E-02 

Upper 

10.75 

10.39 

10.45 

10.27 

10.47 

Lower 

2.252 

2.251 

2.251 

2.251 

2.251 

Total 

13.02 

12.64 

12.71 

12.53 

12.73 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4429 

0.4458 

0.4438 

0.4448 

0.4443 

Upper 

4.933 

4.129 

3.690 

6.385 

4.784 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

5.376 

4.575 

4.133 

6.830 

5.228 

Phosphorus 

Surface 

0.7394 

0.7437 

0.7404 

0.7419 

0.7413 

Upper 

1.258 

1.620 

1.560 

1.740 

1.544 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

1.997 

2.364 

2.300 

2.482 

2.286 

Other Fluxes-Ib/ac 

N Mineralization 

27.16 

28.08 

27.51 

26.93 

27.42 

P Mineralization 

1.174 

1.168 

1.123 

1.132 

1.149 

Denitrification 

2.169 

2.451 

2.582 

2.393 

2.399 

N Immobilization 

6.339 

7.430 

7.555 

7.199 

7.131 

P Immobilization 

3.192 

2.653 

2.639 

2.420 

2.726 


Appendix B West Branch Susquehanna Model Segments Results B23 



AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (HAY), SEGMENT 56 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

Runoff (in) 

38.64 

42.72 

51.99 

35.98 

42.33 

Surface 

8.051 

11.19 

13.58 

6.934 

9.938 

Interflow 

6.859 

7.802 

9.670 

6.998 

7.832 

Baseflow 

6.642 

7.606 

8.570 

5.732 

7.137 

Total 

21.55 

26.60 

31.82 

19.66 

24.91 

Sediment Loss (t/a) 
Nutrient Loss (Ib/a) 
N03 Loss 

0.6538E-01 

0.8007E-01 

0.1520 

0.3998E-01 

0.8436E-01 

Surface 

0.6091 

1.238 

0.6786 

0.6084 

0.7835 

Interflow 

4.340 

5.047 

5.977 

3.736 

4.775 

Baseflow 

12.15 

11.72 

12.08 

9.169 

11.28 

Total 

NH3 Loss 

17.10 

18.01 

18.73 

13.51 

16.84 

Surface 

0.6860 

3.035 

1.020 

0.3565 

1.274 

Interflow 

0.5147 

0.8482 

0.5634 

0.2905 

0.5542 

Baseflow 

0.3520E-01 

0.3834E-01 

0.4089E-01 

0.2633E-01 

0.3519E-01 

Sediment 

0.5479E-03 

0.6973E-03 

0.1492E-02 

0.2471E-03 

0.7461E-03 

Total 

1.236 

3.922 

1.626 

0.6736 

1.864 

ORGN Sediment 

0.1395 

0.1635 

0.3696 

0.6340E-01 

0.1840 

Total N Loss (Ib/a) 

18.48 

22.09 

20.73 

14.25 

18.89 

P04 Loss 

Surface 

0.6925 

1.685 

1.078 

0.3541 

0.9524 

Interflow 

0.1453 

0.2040 

0.2016 

0.1087 

0.1649 

Baseflow 

0.5251E-04 

0.3459E-04 

0.1666E-04 

0.3922E-05 

0.2692E-04 

Sediment 

0.2295E-02 

0.2789E-02 

0.6611E-02 

0.1031E-02 

0.3182E-02 

Total 

0.8402 

1.891 

1.286 

0.4638 

1.120 

ORGP Sediment 

0.3772E-01 

0.4380E-01 

0.9945E-01 

0.1699E-01 

0.4949E-01 

Total P Loss (Ib/a) 

0.8780 

1.935 

1.386 

0.4808 

1.170 

Atm Depn. N03 (Ib/a) 

8.061 

8.736 

8.982 

7.794 

8.393 

Atm Depn. NH4 (Ib/a) 

1.965 

2.426 

2.487 

1.790 

2.167 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

22.51 

22.51 

22.51 

22.51 

22.51 

Nitrate appln.(lb/a) 

7.510 

7.510 

7.510 

7.510 

7.510 

ORGN appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total N appln.(lb/a) 

30.02 

30.02 

30.02 

30.02 

30.02 

P04-p appln.(lb/a) 

13.00 

13.00 

13.00 

13.00 

13.00 

ORGP appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total P appln.(lb/a) 

13.00 

13.00 

13.00 

13.00 

13.00 


Plant Uptake (Ib/a) 
Nitrogen 


Surface 

0.7000E-02 

0.1200E-01 

0.1000E-01 

0.6000E-02 

0.8750E-02 

Upper 

21.48 

20.04 

21.98 

21.87 

21.34 

Lower 

17.68 

17.68 

17.68 

17.68 

17.68 

Total 

Phosphorus 

Surface 

39.17 

37.74 

39.67 

39.56 

39.03 

0.1000E-01 

0.1600E-01 

0.1400E-01 

0.1000E-01 

0.1250E-01 

Upper 

10.04 

8.941 

11.29 

8.149 

9.604 

Lower 

2.252 

2.251 

2.251 

1.362 

2.029 

Total 

12.30 

11.21 

13.56 

9.521 

11.65 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4434 

0.4385 

0.4400 

0.4442 

0.4415 

Upper 

5.461 

6.879 

4.947 

5.055 

5.586 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

5.905 

7.317 

5.387 

5.499 

6.027 

Phosphorus 

Surface 

0.7404 

0.7341 

0.7365 

0.7408 

0.7379 

Upper 

1.971 

3.066 

0.7200 

3.857 

2.404 

Lower 

0.0000 

0.0000 

0.0000 

0.8889 

0.2222 

Total 

2.712 

3.800 

1.457 

5.486 

3.364 

Other Fluxes-Ib/ac 

N Mineralization 

29.28 

26.57 

26.70 

29.02 

27.89 

P Mineralization 

1.191 

1.060 

1.186 

0.8860 

1.081 

Denitrification 

2.719 

2.330 

2.294 

2.622 

2.491 

N Immobilization 

7.799 

6.612 

7.433 

7.998 

7.460 

P Immobilization 

2.388 

2.070 

2.145 

2.351 

2.238 


B24 


Appendix B West Branch Model Segments Results 



AGCHEH RESULTS FOR WEST 8RANCH SUSQUEHANNA (HI-TILL), SEGMENT 62 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

50.29 

36.74 

42.44 

37.48 

41.74 

Runoff (in) 

Surface 

11.27 

4.767 

7.180 

5.640 

7.213 

Interflow 

8.591 

5.224 

6.711 

5.214 

6.435 

Baseflow 

8.016 

6.228 

6.842 

6.250 

6.834 

Total 

27.87 

16.22 

20.73 _ 

17.10 

20.48 

Sediment Loss (t/a) 

1.260 

0.2380 

0.5150 

0.3020 

0.5788 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

1.589 

0.3799 

0.6426 

0.5646 

0.7940 

Interflow 

18.58 

5.851 

8.465 

11.29 

11.05 

Baseflow 

6.207 

4.748 

7.512 

7.210 

6.419 

Total 

26.38 

10.98 

16.62 

19.06 

18.26 

NH3 Loss 

Surface 

3.673 

1.619 

1.430 

1.881 

2.151 

Interflow 

2.268 

1.182 

2.245 

1.563 

1.814 

Baseflow 

0.7586E-01 

0.4055E-01 

0.3604E-01 

0.2779E-01 

0.4506E-01 

Sediment 

0.1641E-01 

0.2560E-02 

0.5572E-02 

0.3893E-02 

0.7109E-02 

Total 

6.034 

2.844 

3.716 

3.476 

4.017 

ORGN Sediment 

4.040 

0.7393 

1.632 

0.9415 

1.838 

Total N Loss (Ib/a) 

36.45 

14.56 

21.97 

23.48 

24.11 

P04 Loss 

Surface 

0.4700 

0.3096 

0.5243 

0.5051 

0.4523 

Interflow 

0.4322 

0.1381 

0.2741 

0.1223 

0.2417 

Baseflow 

0.1954E-02 

0.5995E-04 

0.2989E-04 

0.3607E-05 

0.5119E-03 

Sediment 

0.5358E-01 

0.1021E-01 

0.2332E-01 

0.1357E-01 

0.2517E-01 

Total 

0.9578 

0.4580 

0.8218 

0.6409 

0.7196 

ORGP Sediment 

1.121 

0.2048 

0.4525 

0.2614 

0.5099 

Total P Loss (Ib/a) 

2.079 

0.6627 

1.274 

0.9022 

1.229 

Atm Depn. N03 (Ib/a) 

9.127 

8.393 

8.786 

8.481 

8.697 

Atm Depn. NH4 (Ib/a) 

2.574 

2.101 

2.361 

2.238 

2.318 

Atm Depn. ORGNClb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

76.81 

80.76 

80.76 

80.76 

79.77 

Nitrate appln.(lb/a) 

20.25 

21.57 

21.57 

21.57 

21.24 

ORGN appln.(lb/a) 

19.74 

19.74 

19.74 

19.74 

19.74 

Total N appln.(lb/a) 

116.8 

122.1 

122.1 

122.1 

120.8 

P04-p appln.(lb/a) 

20.78 

23.03 

23.03 

23.03 

22.47 

ORGP appln.(lb/a) 

4.140 

4.140 

4.140 

4.140 

4.140 

Total P appln.(lb/a) 

24.92 

27.17 

27.17 

27.17 

26.61 

Plant Uptake (lb/a) 

Nitrogen 

Surface 

0.2400E-01 

0.1300E-01 

0.1000E-01 

0.1100E-01 

0.1450E-01 

Upper 

52.85 

72.20 

65.52 

65.50 

64.02 

Lower 

36.95 

49.12 

49.12 

49.13 

46.08 

Total 

89.83 

121.3 

114.7 

114.6 

110.1 

Phosphorus 

Surface 

0.2100E-01 

0.9000E-02 

0.8000E-02 

0.9000E-02 

0.1175E-01 

Upper 

15.06 

18.27 

16.58 

16.55 

16.61 

Lower 

3.753 

3.752 

3.752 

2.588 

3.461 

Total 

18.83 

22.03 

20.34 

19.15 

20.09 

Deficit (lb/a) 

Nitrogen 

Surface 

1.227 

1.238 

1.241 

1.240 

1.237 

Upper 

21.95 

2.628 

9.268 

9.308 

10.79 

Lower 

12.18 

0.0000 

0.0000 

0.0000 

3.045 

Total 

35.35 

3.865 

10.51 

10.55 

15.07 

Phosphorus 

Surface 

1.230 

1.241 

1.243 

1.242 

1.239 

Upper 

4.971 

1.741 

3.436 

3.467 

3.404 

Lower 

0.0000 

0.0000 

0.0000 

1.164 

0.2910 

Total 

6.201 

2.983 

4.679 

5.873 

4.934 

Other Fluxes-Ib/ac 

N Mineralization 

25.19 

37.77 

34.40 

38.03 

33.85 

P Mineralization 

1.268 

1.202 

1.175 

1.088 

1.183 

Denitrification 

1.003 

1.568 

1.907 

2.068 

1.637 

N Immobilization 

9.496 

12.25 

11.78 

11.88 

11.35 

P Immobilization 

6.646 

5.389 

6.119 

6.538 

6.173 


Appendix B West Branch Susquehanna Model Segments Results 


B25 


AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (HI-TILL), SEGMENT 62 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

32.93 

37.44 

48.26 

32.01 

37.66 

Runoff (in) 

Surface 

4.114 

6.580 

7.889 

3.663 

5.562 

Interflow 

4.459 

6.717 

9.084 

5.562 

6.456 

Baseflow 

5.376 

6.806 

8.549 

5.589 

6.580 

Total 

13.95 

20.10 

25.52 

14.81 

18.60 

Sediment loss (t/a) 

0.1970 

0.3450 

0.3820 

0.1280 

0.2630 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.3155 

1.281 

0.7214 

0.3869 

0.6762 

Interflow 

15.90 

19.74 

17.18 

4.246 

14.27 

Baseflow 

4.052 

2.636 

4.153 

5.486 

4.082 

Total 

20.27 

23.66 

22.05 

10.12 

19.03 

NH3 Loss 

Surface 

1.514 

2.602 

1.872 

0.8412 

1.707 

Interflow 

2.062 

3.272 

2.829 

1.714 

2.469 

Baseflow 

0.2164E-01 

0.2520E-01 

0.3028E-01 

0.1937E-01 

0.2412E-01 

Sediment 

0.2345E-02 

0.4250E-02 

0.4486E-02 

0.1313E-02 

0.3099E-02 

Total 

3.601 

5.903 

4.735 

2.575 

4.204 

ORGN Sediment 

0.6128 

1.079 

1.174 

0.3809 

0.8117 

Total N Loss (Ib/a) 

24.48 

30.64 

27.96 

13.07 

24.04 

P04 Loss 

Surface 

0.5196 

0.5131 

0.5884 

0.2286 

0.4624 

Interflow 

0.3404 

0.4769 

0.3576 

0.1273 

0.3255 

Baseflow 

0.1153E-05 

0.1735E-05 

0.1376E-05 

0.1020E-05 

0.1321E-05 

Sediment 

0.9213E-02 

0.1539E-01 

0.1641E-01 

0.5309E-02 

0.1158E-01 

Total 

0.8693 

1.005 

0.9625 

0.3612 

0.7995 

ORGP Sediment 

0.1695 

0.2995 

0.3262 

0.1057 

0.2252 

Total P Loss (Ib/a) 

1.039 

1.305 

1.289 

0.4669 

1.025 

Atm Depn. N03 (Ib/a) 

8.048 

8.526 

8.925 

7.696 

8.299 

Atm Depn. NH4 (Ib/a) 

1.955 

2.289 

2.420 

1.698 

2.091 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

79.52 

80.76 

77.82 

79.23 

79.33 

Nitrate appln.(lb/a) 

21.16 

21.57 

20.59 

21.06 

21.09 

ORGN appln.(lb/a) 

19.74 

19.74 

19.74 

19.74 

19.74 

Total N appln.(lb/a) 

120.4 

122.1 

118.2 

120.0 

120.2 

P04-p appln.(lb/a) 

22.33 

23.03 

22.45 

22.55 

22.59 

ORGP appln.(lb/a) 

4.140 

4.140 

4.140 

4.140 

4.140 

Total P appln.(lb/a) 

26.47 

27.17 

26.59 

26.69 

26.73 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.7000E-02 

0.2000E-01 

0.1700E-01 

0.7000E-02 

0.1275E-01 

Upper 

58.45 

67.91 

61.33 

61.60 

62.32 

Lower 

49.13 

34.12 

38.31 

49.12 

42.67 

Total 

Phosphorus 

Surface 

107.6 

102.0 

99.66 

110.7 

105.0 

0.5000E-02 

0.1700E-01 

0.1500E-01 

0.6000E-02 

0.1075E-01 

Upper 

16.49 

15.54 

16.08 

16.04 

16.04 

Lower 

0.4140 

0.4700 

0.4380 

0.2700 

0.3980 

Total 

16.91 

16.02 

16.53 

16.31 

16.44 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.244 

1.230 

1.234 

1.244 

1.238 

Upper 

16.38 

6.889 

13.48 

13.18 

12.48 

Lower 

0.0000 

15.01 

10.84 

0.0000 

6.463 

Total 

17.62 

23.13 

25.55 

14.42 

20.18 

Phosphorus 

Surface 

1.246 

1.234 

1.236 

1.245 

1.240 

Upper 

3.524 

4.478 

3.940 

3.974 

3.979 

Lower 

3.339 

3.281 

3.313 

3.482 

3.354 

Total 

8.109 

8.993 

8.490 

8.700 

8.573 

Other Fluxes-Ib/ac 

N Mineralization 

33.83 

29.86 

27.26 

35.26 

31.55 

P Mineralization 

0.8657 

0.8231 

0.8279 

0.8434 

0.8400 

Denitrification 

0.9908 

0.4804 

0.6721 

1.497 

0.9101 

N Immobilization 

12.61 

11.19 

10.60 

11.98 

11.59 

P Immobilization 

5.554 

6.904 

6.564 

4.214 

5.809 


B26 


Appendix B West Branch Model Segments Ftesults 



AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (LOU-TILL), SEGMENT 63 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

50.29 

36.74 

42.44 

37.48 

41.74 

Runoff (in) 

Surface 

9.650 

3.678 

5.633 

4.432 

5.848 

Interflow 

8.685 

5.418 

6.906 

5.305 

6.579 

Baseflow 

8.561 

6.631 

7.349 

6.733 

7.319 

Total 

26.90 

15.73 

19.89 

16.47 

19.75 

Sediment Loss (t/a) 

0.7450 

0.1350 

0.3280 

0.1850 

0.3482 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

1.328 

0.3553 

0.3401 

0.4065 

0.6075 

Interflow 

21.40 

5.859 

8.738 

13.98 

12.49 

Baseflow 

5.839 

4.700 

8.616 

5.622 

6.194 

Total 

28.56 

10.91 

17.69 

20.01 

19.29 

NH3 Loss 

Surface 

4.093 

1.835 

1.070 

2.051 

2.262 

Interflow 

1.996 

1.124 

2.111 

1.521 

1.688 

Baseflow 

0.7866E-01 

0.4033E-01 

0.3577E-01 

0.2705E-01 

0.4545E-01 

Sediment 

0.9337E-02 

0.1446E-02 

0.3404E-02 

0.2234E-02 

0.4105E-02 

Total 

6.177 

3.000 

3.220 

3.601 

4.000 

ORGN Sediment 

2.959 

0.5149 

1.284 

0.7087 

1.367 

Total N Loss (Ib/a) 

37.70 

14.43 

22.20 

24.32 

24.66 

P04 Loss 

Surface 

0.6519 

0.3825 

0.5169 

0.6105 

0.5404 

Interflow 

0.4011 

0.9841E-01 

0.2032 

0.1071 

0.2025 

Baseflow 

0.1961E-02 

0.5450E-04 

0.1846E-04 

0.9925E-06 

0.5087E-03 

Sediment 

0.3185E-01 

0.5760E-02 

0.1462E-01 

0.8246E-02 

0.1512E-01 

Total 

1.087 

0.4868 

0.7347 

0.7258 

0.7586 

ORGP Sediment 

0.7899 

0.1372 

0.3422 

0.1893 

0.3647 

Total P Loss (Ib/a) 

1.877 

0.6239 

1.077 

0.9151 

1.123 

Atm Depn. N03 (Ib/a) 

9.127 

8.393 

8.786 

8.481 

8.697 

Atm Depn. NH4 (Ib/a) 

2.574 

2.101 

2.361 

2.238 

2.318 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

83.89 

88.53 

88.53 

88.53 

87.37 

Nitrate appln.(lb/a) 

22.26 

23.81 

23.81 

23.81 

23.42 

ORGN appln.(lb/a) 

21.12 

21.12 

21.12 

21.12 

21.12 

Total N appln.(lb/a) 

127.3 

133.5 

133.5 

133.5 

131.9 

P04-p appln.(lb/a) 

22.60 

25.24 

25.24 

25.24 

24.58 

ORGP appln.(lb/a) 

4.500 

4.500 

4.500 

4.500 

4.500 

Total P appln.(lb/a) 

27.10 

29.74 

29.74 

29.74 

29.08 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.5100E-01 

0.2000E-01 

0.2300E-01 

0.2300E-01 

0.2925E-01 

Upper 

58.10 

78.97 

72.11 

74.17 

70.83 

Lower 

37.50 

53.06 

53.06 

51.41 

48.76 

Total 

95.65 

132.0 

125.2 

125.6 

119.6 

Phosphorus 

Surface 

0.4700E-01 

0.1500E-01 

0.1900E-01 

0.1800E-01 

0.2475E-01 

Upper 

15.55 

18.63 

16.69 

16.60 

16.87 

Lower 

4.203 

4.202 

4.202 

0.9470 

3.388 

Total 

19.80 

22.85 

20.91 

17.57 

20.28 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.300 

1.330 

1.328 

1.328 

1.321 

Upper 

22.69 

1.858 

8.658 

6.624 

9.958 

Lower 

15.55 

0.0000 

0.0000 

1.648 

4.299 

Total 

39.54 

3.189 

9.986 

9.600 

15.58 

Phosphorus 

Surface 

1.354 

1.385 

1.381 

1.383 

1.376 

Upper 

6.879 

3.785 

5.723 

5.810 

5.549 

Lower 

0.0000 

0.0000 

0.0000 

3.255 

0.8138 

Total 

8.233 

5.170 

7.104 

10.45 

7.739 

Other Fluxes-Ib/ac 

N Mineralization 

25.48 

40.29 

37.76 

38.99 

35.63 

P Mineralization 

1.374 

1.232 

1.252 

0.9771 

1.209 

Denitrification 

0.9183 

1.457 

2.107 

1.614 

1.524 

N Immobilization 

10.64 

13.65 

13.67 

13.18 

12.78 

P Immobilization 

8.626 

7.153 

8.281 

8.490 

8.138 


Appendix B West Branch Susquehanna Model Segments Results 


B27 




AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (LOW-TILL), SEGMENT 63 



1988 

1989 

1990 . 

1991 

SUM/AVER 

Rainfall (in) 

32.93 

37.44 

48.26 

32.01 

37.66 

Runoff (in) 

Surface 

3.151 

5.158 

5.869 

2.682 

4.215 

Interflow 

4.526 

6.963 

9.702 

5.921 

6.778 

Baseflow 

5.625 

7.317 

9.334 

5.835 

7.028 

Total 

13.30 

19.44 

24.91 

14.44 

18.02 

Sediment Loss (t/a) 

0.9677E-01 

0.1990 

0.2180 

0.6996E-01 

0.1459 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2459 

1.080 

0.5764 

0.2287 

0.5328 

Interflow 

17.19 

22.20 

20.76 

5.268 

16.35 

Baseflow 

2.588 

2.053 

4.019 

5.154 

3.454 

Total 

20.02 

25.33 

25.36 

10.65 

20.34 

NH3 Loss 

Surface 

0.9942 

3.215 

2.322 

0.7670 

1.825 

Interflow 

2.181 

3.541 

3.088 

1.867 

2.669 

Baseflow 

0.2014E-01 

0.2383E-01 

0.2873E-01 

0.1745E-01 

0.2254E-01 

Sediment 

0.1037E-02 

0.2398E-02 

0.2643E-02 

0.6651E-03 

0.1686E-02 

Total 

3.196 

6.783 

5.441 

2.652 

4.518 

ORGN Sediment 

0.3540 

0.7653 

0.8091 

0.2420 

0.5426 

Total N Loss (Ib/a) 

23.57 

32.88 

31.61 

13.54 

25.40 

P04 Loss 

Surface 

0.6193 

0.7328 

0.7711 

0.2414 

0.5911 

Interflow 

0.3648 

0.5464 

0.3420 

0.9728E-01 

0.3376 

Baseflow 

0.1162E-05 

0.1750E-05 

0.1215E-05 

0.6039E-06 

0.1183E-05 

Sediment 

0.4419E-02 

0.8803E-02 

0.9087E-02 

0.2751E-02 

0.6265E-02 

Total 

0.9884 

1.288 

1.122 

0.3414 

0.9349 

ORGP Sediment 

0.9429E-01 

0.2046 

0.2167 

0.6459E-01 

0.1450 

Total P Loss (Ib/a) 

1.083 

1.493 

1.339 

0.4060 

1.080 

Atm Depn. N03 (Ib/a) 

8.048 

8.526 

8.925 

7.696 

8.299 

Atm Depn. NH4 (Ib/a) 

1.955 

2.289 

2.420 

1.698 

2.091 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

87.08 

88.53 

85.12 

87.21 

86.99 

Nitrate appln.(lb/a) 

23.33 

23.81 

22.67 

23.37 

23.30 

ORGN appln.(lb/a) 

21.12 

21.12 

21.12 

21.12 

21.12 

Total N appln.(lb/a) 

131.5 

133.5 

128.9 

131.7 

131.4 

P04-p appln.(lb/a) 

24.41 

25.24 

24.62 

24.67 

24.74 

ORGP appln.(lb/a) 

4.500 

4.500 

4.500 

4.500 

4.500 

Total P appln.(lb/a) 

28.91 

29.74 

29.12 

29.17 

29.24 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2100E-01 

0.3500E-01 

0.2600E-01 

0.1200E-01 

0.2350E-01 

Upper 

68.65 

74.64 

66.07 

69.50 

69.71 

Lower 

46.70 

32.70 

38.31 

52.55 

42.56 

Total 

115.4 

107.4 

104.4 

122.1 

112.3 

Phosphorus 

Surface 

0.1700E-01 

0.2900E-01 

0.2300E-01 

0.1200E-01 

0.2025E-01 

Upper 

16.75 

15.50 

15.57 

18.91 

16.68 

Lower 

0.3450 

0.4690 

0.3880 

0.2310 

0.3583 

Total 

17.12 

16.00 

15.98 

19.15 

17.06 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.330 

1.315 

1.325 

1.338 

1.327 

Upper 

12.14 

6.130 

14.71 

11.26 

11.06 

Lower 

6.359 

20.35 

14.73 

0.5031 

10.49 

Total 

19.83 

27.79 

30.77 

13.10 

22.87 

Phosphorus 

Surface 

1.384 

1.371 

1.378 

1.389 

1.381 

Upper 

5.664 

6.912 

6.842 

3.500 

5.729 

Lower 

3.858 

3.733 

3.814 

3.971 

3.844 

Total 

10.91 

12.02 

12.03 

8.860 

10.95 

Other Fluxes-Ib/ac 

N Mineralization 

32.76 

29.54 

27.70 

37.97 

31.99 

P Mineralization 

0.9117 

0.8432 

0.9044 

0.9609 

0.9050 

Denitrification 

0.5702 

0.3394 

0.5747 

1.415 

0.7248 

N Immobilization 

13.92 

12.30 

11.82 

13.53 

12.89 

P Immobilization 

7.467 

8.980 

8.725 

5.005 

7.544 


B28 


Appendix B West Branch Mode! Segments Results 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (HAY), SEGMENT 66 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

50.29 

36.74 

42.44 

37.48 

41.74 

Runoff (in) 

Surface 

12.31 

5.137 

7.739 

6.065 

7.813 

Interflow 

8.830 

5.494 

7.198 

5.526 

6.762 

Baseflow 

8.135 

6.262 

6.950 

6.220 

6.892 

Total 

29.27 

16.89 

21.89 

17.81 

21.47 

Sediment Loss (t/a) 

0.4530 

0.8470E-01 

0.1740 

0.1100 

0.2054 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

1.088 

0.7047 

0.3996 

0.6949 

0.7218 

Interflow 

5.344 

3.271 

4.342 

5.972 

4.732 

Baseflow 

10.27 

9.204 

10.46 

9.996 

9.982 

Total 

16.71 

13.18 

15.20 

16.66 

15.44 

NH3 Loss 

Surface 

1.487 

0.8108 

0.3905 

0.7815 

0.8675 

Interflow 

0.5266 

0.4345 

0.3732 

0.6269 

0.4903 

Baseflow 

0.7840E-01 

0.4287E-01 

0.3891E-01 

0.3039E-01 

0.4764E-01 

Sediment 

0.5006E-02 

0.8419E-03 

0.1672E-02 

0.1209E-02 

0.2182E-02 

Total 

2.097 

1.289 

0.8043 

1.440 

1.408 

ORGN Sediment 

1.169 

0.1969 

0.4248 

0.2575 

0.5120 

Total N Loss (Ib/a) 

19.97 

14.67 

16.43 

18.36 

17.36 

P04 Loss 

Surface 

0.8239 

0.3337 

0.4981 

0.8416 

0.6243 

Interflow 

0.3092 

0.1448 

0.1460 

0.1673 

0.1918 

Baseflow 

0.1972E-02 

0.9139E-04 

0.8090E-04 

0.4410E-04 

0.5471E-03 

Sediment 

0.1876E-01 

0.3315E-02 

0.6753E-02 

0.5005E-02 

0.8458E-02 

Total 

1.154 

0.4819 

0.6509 

1.014 

0.8252 

ORGP Sediment 

0.3127 

0.5284E-01 

0.1139 

0.6926E-01 

0.1372 

Total P Loss (Ib/a) 

1.467 

0.5348 

0.7647 

1.083 

0.9624 

Atm Depn. N03 (Ib/a) 

9.127 

8.393 

8.786 

8.481 

8.697 

Atm Depn. NH4 (lb/a) 

2.574 

2.101 

2.361 

2.238 

2.318 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

21.76 

21.95 

22.51 

22.17 

22.10 

Nitrate appln.(lb/a) 

7.260 

7.323 

7.510 

7.397 

7.373 

ORGN appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total N appln.(lb/a) 

29.02 

29.27 

30.02 

29.57 

29.47 

P04-p appln.(lb/a) 

10.97 

11.07 

11.40 

11.28 

11.18 

ORGP appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total P appln.(lb/a) 

10.97 

11.07 

11.40 

11.28 

11.18 

Plant Uptake (lb/a) 

Nitrogen 

Surface 

0.1100E-01 

0.5000E-02 

0.6000E-02 

0.7000E-02 

0.7250E-02 

Upper 

21.50 

25.29 

25.12 

20.91 

23.21 

Lower 

17.68 

17.68 

17.68 

17.68 

17.68 

Total 

39.20 

42.98 

42.81 

38.60 

40.90 

Phosphorus 

Surface 

0.1600E-01 

0.9000E-02 

0.9000E-02 

0.1000E-01 

0.1100E-01 

Upper 

9.852 

9.779 

9.284 

8.842 

9.439 

Lower 

2.252 

2.251 

2.251 

2.251 

2.251 

Total 

12.12 

12.04 

11.54 

11.10 

11.70 

Deficit (lb/a) 

Nitrogen 

Surface 

0.4396 

0.4448 

0.4443 

0.4437 

0.4431 

Upper 

5.424 

1.642 

1.802 

6.012 

3.720 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

5.863 

2.086 

2.247 

6.456 

4.163 

Phosphorus 

Surface 

0.7344 

0.7415 

0.7414 

0.7399 

0.7393 

Upper 

2.159 

2.227 

2.722 

3.165 

2.568 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.894 

2.968 

3.463 

3.905 

3.307 

Other Fluxes-Ib/ac 

N Mineralization 

26.90 

27.24 

27.72 

26.58 

27.11 

P Mineralization 

1.138 

1.039 

1.044 

1.044 

1.066 

Denitrification 

2.151 

2.431 

2.505 

2.550 

2.409 

N Immobilization 

6.242 

7.137 

7.537 

7.231 

7.037 

P Immobilization 

2.395 

1.966 

1.985 

2.306 

2.163 


Appendix 8 West Branch Susquehanna Model Segments Results B29 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (HAY), SEGHENT 66 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

32.93 

37.44 

48.26 

32.01 

37.66 

Runoff (in) 

Surface 

4.488 

6.887 

8.659 

3.827 

5.965 

Interflow 

4.674 

6.911 

9.580 

5.820 

6.746 

Baseflow 

5.244 

6.867 

8.557 

5.542 

6.552 

Total 

14.41 

20.66 

26.80 

15.19 

19.26 

Sediment Loss (t/a) 

0.7320E-01 

0.1240 

0.1440 

0.4398E-01 

0.9629E-01 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.3254 

0.6491 

0.6266 

0.3791 

0.4950 

Interflow 

3.526 

3.863 

6.189 

2.985 

4.141 

Baseflow 

9.593 

10.87 

11.29 

7.804 

9.889 

Total 

13.44 

15.38 

18.11 

11.17 

14.52 

NH3 Loss 

Surface 

0.4066 

0.7517 

0.6790 

0.2783 

0.5289 

Interflow 

0.3284 

0.4720 

0.5955 

0.2169 

0.4032 

Baseflow 

0.2373E-01 

0.2933E-01 

0.3481E-01 

0.2170E-01 

0.2739E-01 

Sediment 

0.7314E-03 

0.1211E-02 

0.1318E-02 

0.3562E-03 

0.9042E-03 

Total 

0.7594 

1.254 

1.311 

0.5172 

0.9604 

ORGN Sediment 

0.1710 

0.2899 

0.3275 

0.9019E-01 

0.2196 

Total N Loss (Ib/a) 

14.38 

16.92 

19.75 

11.78 

15.71 

P04 Loss 

Surface 

0.3569 

0.5446 

0.7965 

0.2674 

0.4913 

Interflow 

0.1041 

0.1228 

0.1949 

0.9514E-01 

0.1292 

Baseflow 

0.2295E-04 

0.1324E-04 

0.4713E-05 

0.1273E-05 

0.1054E-04 

Sediment 

0.3036E-02 

0.4827E-02 

0.5773E-02 

0.1432E-02 

0.3767E-02 

Total 

0.4641 

0.6723 

0.9972 

0.3640 

0.6244 

ORGP Sediment 

0.4597E-01 

0.7806E-01 

0.8863E-01 

0.2420E-01 

0.5922E-01 

Total P Loss (Ib/a) 

0.5101 

0.7503 

1.086 

0.3882 

0.6837 

Atm Depn. N03 (Ib/a) 

8.048 

8.526 

8.925 

7.696 

8.299 

Atm Depn. NH4 (Ib/a) 

1.955 

2.289 

2.420 

1.698 

2.091 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

22.51 

22.51 

22.51 

22.51 

22.51 

Nitrate appln.(lb/a) 

7.510 

7.510 

7.510 

7.510 

7.510 

ORGN appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total N appln.(lb/a) 

30.02 

30.02 

30.02 

30.02 

30.02 

P04-p appln.(lb/a) 

11.40 

11.40 

11.40 

11.40 

11.40 

ORGP appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total P appln.(lb/a) 

11.40 

11.40 

11.40 

11.40 

11.40 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.4000E-02 

0.1000E-01 

0.7000E-02 

0.4000E-02 

0.6250E-02 

Upper 

24.25 

25.99 

22.55 

26.18 

24.74 

Lower 

17.68 

17.68 

17.68 

17.68 

17.68 

Total 

41.93 

43.69 

40.24 

43.86 

42.43 

Phosphorus 

Surface 

0.6000E-02 

0.1500E-01 

0.1000E-01 

0.5000E-02 

0.9000E-02 

Upper 

8.820 

8.627 

10.40 

7.084 

8.733 

Lower 

2.252 

2.251 

1.840 

0.3800 

1.681 

Total 

11.08 

10.89 

12.25 

7.469 

10.42 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4466 

0.4401 

0.4432 

0.4467 

0.4442 

Upper 

2.687 

0.9345 

4.371 

0.7594 

2.188 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.134 

1.375 

4.814 

1.206 

2.632 

Phosphorus 

Surface 

0.7450 

0.7350 

0.7402 

0.7450 

0.7413 

Upper 

3.189 

3.381 

1.610 

4.922 

3.275 

Lower 

0.0000 

0.0000 

0.4110 

1.871 

0.5705 

Total 

3.934 

4.116 

2.761 

7.538 

4.587 

Other Fluxes-Ib/ac 

N Mineralization 

29.40 

27.38 

26.58 

29.24 

28.15 

P Mineralization 

1.084 

1.014 

0.9860 

0.6440 

0.9320 

Denitrification 

3.018 

2.484 

2.312 

2.406 

2.555 

N Immobilization 

8.302 

7.412 

7.322 

8.009 

7.761 

P Immobilization 

2.376 

2.201 

1.887 

2.350 

2.203 


B30 


Appendix B West Branch Model Segments Results 




AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (HI-TILL), SEGMENT 72 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

4S.85 

35.21 

45.00 

35.72 

40.44 

Runoff (in) 

Surface 

7.086 

2.811 

6.391 

3.625 

4.978 

Interflow 

7.664 

3.619 

7.385 

5.078 

5.936 

Baseflow 

9.438 

6.834 

8.828 

7.440 

8.135 

Total 

24.19 

13.26 

22.60 

16.14 

19.05 

Sediment Loss (t/a) 

1.090 

0.4260 

0.7370 

0.4010 

0.6635 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.5328 

0.2256 

0.3999 

0.3105 

0.3672 

Interflow 

14.52 

5.258 

6.906 

5.223 

7.977 

Baseflow 

7.201 

5.464 

7.683 

5.840 

6.547 

Total 

22.25 

10.95 

14.99 

11.37 

14.89 

NH3 Loss 

Surface 

1.104 

0.4996 

0.9228 

0.8773 

0.8509 

Interflow 

1.488 

0.8382 

2.947 

1.665 

1.735 

Baseflow 

0.6829E-01 

0.3126E-01 

0.3229E-01 

0.2268E-01 

0.3863E-01 

Sediment 

0.1275E-01 

0.4643E-02 

0.8269E-02 

0.4533E-02 

0.7549E-02 

Total 

2.672 

1.374 

3.910 

2.569 

2.631 

ORGN Sediment 

3.527 

1.368 

2.404 

1.275 

2.143 

Total N Loss (Ib/a) 

28.45 

13.69 

21.30 

15.22 

19.66 

P04 Loss 

Surface 

0.2511 

0.2302 

0.4618 

0.2674 

0.3026 

Interflow 

0.3566 

0.1132 

0.2841 

0.9765E-01 

0.2129 

Baseflow 

0.1951E-02 

0.8393E-04 

0.6744E-04 

0.1435E-04 

0.5292E-03 

Sediment 

0.4608E-01 

0.1925E-01 

0.3379E-01 

0.1790E-01 

0.2925E-01 

Total 

0.6557 

0.3627 

0.7798 

0.3829 

0.5453 

ORGP Sediment 

0.9773 

0.3794 

0.6656 

0.3536 

0.5940 

Total P Loss (Ib/a) 

1.633 

0.7420 

1.445 

0.7365 

1.139 

Atm Depn. N03 (Ib/a) 

8.423 

7.795 

8.222 

7.576 

8.004 

Atm Depn. NH4 (Ib/a) 

2.360 

2.035 

2.249 

1.909 

2.138 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0060 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

72.45 

74.42 

74.42 

74.42 

73.93 

Nitrate appln.(lb/a) 

19.01 

19.67 

19.67 

19.67 

19.51 

ORGN appln.(lb/a) 

19.14 

19.14 

19.14 

19.14 

19.14 

Total N appln.(lb/a) 

110.6 

113.2 

113.2 

113.2 

112.6 

P04-p appln.(lb/a) 

20.17 

21.31 

21.31 

21.31 

21.02 

ORGP appln.(lb/a) 

4.020 

4.020 

4.020 

4.020 

4.020 

Total P appln.(lb/a) 

24.19 

25.33 

25.33 

25.33 

25.04 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1800E-01 

0.8000E-02 

0.9000E-02 

0.1400E-01 

0.1225E-01 

Upper 

53.22 

66.49 

63.26 

65.65 

62.15 

Lower 

40.23 

47.16 

47.16 

47.16 

45.43 

Total 

93.47 

113.7 

110.4 

112.8 

107.6 

Phosphorus 

Surface 

0.1500E-01 

0.6000E-02 

0.8000E-02 

0.1100E-01 

0.1000E-01 

Upper 

15.23 

17.26 

16.22 

17.17 

16.47 

Lower 

3.753 

3.752 

3.752 

3.753 

3.753 

Total 

18.99 

21.02 

19.98 

20.93 

20.23 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.183 

1.193 

1.191 

1.187 

1.189 

Upper 

18.60 

5.343 

8.543 

6.165 

9.663 

Lower 

6.934 

0.0000 

0.0000 

0.0000 

1.734 

Total 

26.72 

6.536 

9.734 

7.352 

12.59 

Phosphorus 

Surface 

1.236 

1.245 

1.243 

1.239 

1.241 

Upper 

4.801 

2.756 

3.794 

2.844 

3.549 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

6.037 

4.001 

5.037 

4.083 

4.790 

Other Fluxes-Ib/ac 

N Mineralization 

29.16 

38.35 

35.68 

37.47 

35.17 

P Mineralization 

1.283 

1.161 

1.162 

1.181 

1.197 

Denitrification 

1.389 

2.258 

2.205 

2.125 

1.994 

N Immobilization 

9.639 

11.77 

11.12 

11.02 

10.89 

P Immobilization 

6.181 

5.234 

4.953 

4.395 

5.191 


Appendix B West Branch Susquehanna Model Segments Results 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (HI-TILL), SEGMENT 72 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

36.64 

38.39 

50.41 

34.96 

40.10 

Runoff (in) 

Surface 

4.901 

5.591 

8.224 

4.584 

5.825 

Interflow 

5.065 

6.363 

8.690 

4.815 

6.233 

Baseflow 

6.472 

8.288 

10.32 

6.660 

7.934 

Total 

16.44 

20.24 

27.23 

16.06 

19.99 

Sediment Loss (t/a) 

0.6740 

0.7560 

1.580 

0.6920 

0.9255 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.3772 

0.9770 

0.6304 

0.5710 

0.6389 

Interflow 

9.931 

15.37 

14.77 

2.551 

10.66 

Baseflow 

5.379 

4.610 

3.159 

3.019 

4.042 

Total 

15.69 

20.96 

18.55 

6.142 

15.34 

NH3 Loss 

Surface 

1.104 

2.764 

2.630 

1.046 

1.886 

Interflow 

2.309 

3.058 

2.997 

1.398 

2.440 

Baseflow 

0.1768E-01 

0.2149E-01 

0.2603E-01 

0.1595E-01 

0.2029E-01 

Sediment 

0.7355E-02 

0.1093E-01 

0.2056E-01 

0.7834E-02 

0.1167E-01 

Total 

3.438 

5.855 

5.673 

2.468 

4.359 

ORGN Sediment 

2.187 

2.456 

5.148 

2.256 

3.012 

Total N Loss (Ib/a) 

21.31 

29.27 

29.38 

10.87 

22.71 

P04 Loss 

Surface 

0.4231 

0.5629 

0.6513 

0.2391 

0.4691 

Interflow 

0.2522 

0.3859 

0.3483 

0.9109E-01 

0.2694 

Baseflow 

0.1314E-05 

0.1530E-05 

0.1086E-05 

0.6426E-06 

0.1143E-05 

Sediment 

0.3141E-01 

0.3543E-01 

0.7303E-01 

0.3097E-01 

0.4271E-01 

Total 

0.7067 

0.9842 

1.073 

0.3611 

0.7813 

ORGP Sediment 

0.6057 

0.6813 

1.430 

0.6250 

0.8355 

Total P Loss (Ib/a) 

1.312 

1.665 

2.503 

0.9862 

1.617 

Atm Depn. N03 (Ib/a) 

7.549 

7.930 

8.490 

7.365 

7.833 

Atm Depn. NH4 (Ib/a) 

1.909 

2.187 

2.351 

1.741 

2.047 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

72.54 

67.84 

71.31 

73.68 

71.34 

Nitrate appln.(lb/a) 

19.04 

17.48 

18.64 

19.42 

18.64 

ORGN appln.(lb/a) 

19.14 

19.14 

19.14 

19.14 

19.14 

Total N appln.(lb/a) 

110.7 

104.5 

109.1 

112.2 

109.1 

P04-p appln.(lb/a) 

20.22 

21.31 

20.46 

21.31 

20.83 

ORGP appln.(lb/a) 

4.020 

4.020 

4.020 

4.020 

4.020 

Total P appln.(lb/a) 

24.24 

25.33 

24.48 

25.33 

24.85 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.6000E-02 

0.1400E-01 

0.1400E-01 

0.6000E-02 

0.1000E-01 

Upper 

55.12 

56.69 

59.38 

66.12 

59.33 

Lower 

47.17 

33.43 

34.77 

47.16 

40.63 

Total 

Phosphorus 

Surface 

102.3 

90.13 

94.16 

113.3 

99.97 

0.6000E-02 

0.1200E-01 

0.1200E-01 

0.5000E-02 

0.8750E-02 

Upper 

16.01 

15.70 

15.61 

17.12 

16.11 

Lower 

0.9410 

0.4990 

0.4210 

0.3070 

0.5420 

Total 

16.95 

16.21 

16.04 

17.43 

16.66 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.195 

1.187 

1.187 

1.194 

1.191 

Upper 

16.70 

15.12 

12.45 

5.696 

12.49 

Lower 

0.0000 

13.73 

12.39 

0.0000 

6.530 

Total 

17.89 

30.03 

26.03 

6.890 

20.21 

Phosphorus 

Surface 

1.245 

1.239 

1.239 

1.246 

1.242 

Upper 

4.010 

4.315 

4.402 

2.892 

3.905 

Lower 

2.812 

3.253 

3.331 

3.445 

3.210 

Total 

8.067 

8.808 

8.973 

7.582 

8.358 

Other Fluxes-Ib/ac 

N Mineralization 

34.48 

28.55 

27.23 

35.96 

31.56 

P Mineralization 

0.8817 

0.8086 

0.8573 

0.8393 

0.8467 

Denitrification 

1.723 

1.061 

0.5859 

1.081 

1.113 

N Immobilization 

11.41 

9.243 

9.772 

11.98 

10.60 

P Immobilization 

3.896 

5.322 

4.761 

3.388 

4.342 


B32 


Appendix B West Branch Model Segments Results 



AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (LOW-TILL), SEGMENT 73 


. 

1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

45.85 

35.21 

45.00 

35.72 

40.44 

Runoff (in) 

Surface 

5.606 

2.058 

5.059 

2.743 

3.866 

Interflow 

7.803 

3.443 

7.393 

4.993 

5.908 

Baseflow 

9.813 

6.974 

9.331 

7.777 

8.474 

Total 

23.22 

12.48 

21.78 

15.51 

18.25 

Sediment Loss (t/a) 

0.6710 

0.2710 

0.4660 

0.2490 

0.4143 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.3981 

0.1332 

0.2448 

0.2060 

0.2455 

Interflow 

16.81 

5.176 

6.983 

5.101 

8.517 

Baseflow 

6.372 

4.916 

8.605 

5.525 

6.355 

Total 

23.58 

10.23 

15.83 

10.83 

15.12 

NH3 Loss 

Surface 

0.9213 

0.4111 

0.9084 

0.6793 

0.7300 

Interflow 

1.248 

0.7005 

2.874 

1.687 

1.627 

Baseflow 

0.6934E-01 

0.3010E-01 

0.3216E-01 

0.2209E-01 

0.3842E-01 

Sediment 

0.7519E-02 

0.2911E-02 

0.5064E-02 

0.2769E-02 

0.4566E-02 

Total 

2.247 

1.145 

3.820 

2.391 

2.401 

ORGN Sediment 

2.696 

1.084 

1.865 

0.9950 

1.660 

Total N Loss (Ib/a) 

28.52 

12.45 

21.52 

14.22 

19.18 

P04 Loss 

Surface 

0.2861 

0.3007 

0.5546 

0.2832 

0.3562 

Interflow 

0.3317 

0.8723E-01 

0.2349 

0.7350E-01 

0.1818 

Baseflow 

0.1960E-02 

0.7453E-04 

0.4847E-04 

0.5150E-05 

0.5220E-03 

Sediment 

0.2792E-01 

0.1222E-01 

0.2133E-01 

0.1134E-01 

0.1820E-01 

Total 

0.6477 

0.4002 

0.8109 

0.3681 

0.5567 

ORGP Sediment 

0.7187 

0.2888 

0.4969 

0.2652 

0.4424 

Total P Loss (Ib/a) 

1.366 

0.6890 

1.308 

0.6333 

0.9991 

Atm Depn. N03 (Ib/a) 

8.423 

7.795 

8.222 

7.576 

8.004 

Atm Depn. NH4 (Ib/a) 

2.360 

2.035 

2.249 

1.909 

2.138 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

79.37 

81.70 

81.70 

81.70 

81.12 

Nitrate appln.(lb/a) 

20.91 

21.69 

21.69 

21.69 

21.50 

ORGN appln.(lb/a) 

20.46 

20.46 

20.46 

20.46 

20.46 

Total N appln.(lb/a) 

120.7 

123.9 

123.9 

123.9 

123.1 

P04-p appln.(lb/a) 

21.94 

23.29 

23.29 

23.29 

22.95 

ORGP appln.(lb/a) 

4.320 

4.320 

4.320 

4.320 

4.320 

Total P appln.(lb/a) 

26.26 

27.61 

27.61 

27.61 

27.27 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.3200E-01 

0.1100E-01 

0.1400E-01 

0.1600E-01 

0.1825E-01 

Upper 

60.75 

74.29 

68.75 

74.95 

69.69 

Lower 

40.63 

51.10 

51.10 

51.08 

48.48 

Total 

101.4 

125.4 

119.9 

126.1 

118.2 

Phosphorus 

Surface 

0.2900E-01 

0.8000E-02 

0.1400E-01 

0.1400E-01 

0.1625E-01 

Upper 

16.05 

17.35 

16.15 

17.67 

16.81 

Lower 

4.203 

4.202 

4.202 

2.558 

3.791 

Total 

20.28 

21.56 

20.37 

20.24 

20.61 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.269 

1.289 

1.286 

1.285 

1.282 

Upper 

17.07 

3.518 

9.033 

2.833 

8.113 

Lower 

10.47 

0.0000 

0.0000 

0.0000 

2.617 

Total 

28.81 

4.807 

10.32 

4.118 

12.01 

Phosphorus 

Surface 

1.372 

1.392 

1.387 

1.386 

1.384 

Upper 

6.381 

5.075 

6.261 

4.748 

5.616 

Lower 

0.0000 

0.0000 

0.0000 

1.644 

0.4110 

Total 

7.753 

6.468 

7.648 

7.779 

7.412 

Other Fluxes-Ib/ac 

N Mineralization 

30.45 

41.37 

38.71 

40.65 

37.80 

P Mineralization 

1.406 

1.200 

1.246 

1.085 

1.234 

Denitrification 

1.176 

2.002 

2.438 

1.899 

1.879 

N Immobilization 

10.93 

13.16 

12.52 

12.43 

12.26 

P Immobilization 

8.126 

6.861 

6.928 

5.905 

6.955 


Appendix B West Branch Susquehanna Model Segments Results 


B33 




AGCHEM RESULTS FOR WEST BRANCH SUSQUEHANNA (LOW-TILL), SEGMENT 73 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

36.64 

38.39 

50.41 

34.96 

40.10 

Runoff (in) 

Surface 

3.772 

4.521 

6.765 

3.248 

4.576 

Interflow 

5.025 

6.362 

8.845 

5.039 

6.318 

Baseflow 

6.768 

8.788 

10:93 

7.053 

8.384 

Total 

15.57 

19.67 

26.53 

15.34 

19.28 

Sediment Loss (t/a) 

0.4220 

0.5090 

1.080 

0.3040 

0.5788 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.3280 

0.7642 

0.4795 

0.2502 

0.4555 

Interflow 

11.00 

17.32 

17.40 

3.474 

12.30 

Baseflow 

3.664 

2.106 

3.207 

2.069 

2.761 

Total 

14.99 

20.19 

21.09 

5.794 

15.52 

NH3 Loss 

Surface 

0.8213 

2.962 

2.468 

1.002 

1.813 

Interflow 

2.252 

2.905 

2.898 

1.548 

2.401 

Baseflow 

0.171IE-01 

0.2025E-01 

0.2405E-01 

0.1459E-01 

0.1900E-01 

Sediment 

0.4539E-02 

0.7312E-02 

0.1505E-01 

0.3207E-02 

0.7527E-02 

Total 

3.095 

5.894 

5.405 

2.568 

4.241 

ORGN Sediment 

1.700 

2.071 

4.399 

1.210 

2.345 

Total N Loss (Ib/a) 

19.78 

28.16 

30.89 

9.572 

22.10 

P04 Loss 

Surface 

0.5617 

0.7987 

0.8608 

0.2735 

0.6237 

Interflow 

0.2509 

0.4057 

0.3366 

0.7268E-01 

0.2665 

Baseflow 

0.9109E-06 

0.1444E-05 

0.9439E-06 

0.3873E-06 

0.9215E-06 

Sediment 

0.2026E-01 

0.2514E-01 

0.5062E-01 

0.1331E-01 

0.2733E-01 

Total 

0.8329 

1.230 

1.248 

0.3595 

0.9176 

ORGP Sediment 

0.4529 

0.5531 

1.177 

0.3226 

0.6264 

Total P Loss (Ib/a) 

1.286 

1.783 

2.425 

0.6821 

1.544 

Atm Depn. N03 (Ib/a) 

7.549 

7.930 

8.490 

7.365 

7.833 

Atm Depn. NH4 (Ib/a) 

1.909 

2.187 

2.351 

1.741 

2.047 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. 0RGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

79.48 

73.92 

78.03 

81.35 

78.19 

Nitrate appln.(lb/a) 

20.95 

19.10 

20.47 

21.57 

20.52 

ORGN appln.(lb/a) 

20.46 

20.46 

20.46 

20:46 

20.46 

Total N appln.(lb/a) 

120.9 

113.5 

119.0 

123.4 

119.2 

P04-p appln.(lb/a) 

22.01 

23.29 

22.29 

23.29 

22.72 

ORGP appln.(lb/a) 

4.320 

4.320 

4.320 

4.320 

4.320 

Total P appln.(lb/a) 

26.33 

27.61 

26.61 

27.61 

27.04 

Plant Uptake (lb/a) 

Nitrogen 

Surface 

0.1500E-01 

0.2600E-01 

0.2600E-01 

0.1100E-01 

0.1950E-01 

Upper 

65.94 

61.21 

65.72 

77.28 

67.54 

Lower 

48.14 

31.67 

34.55 

47.21 

40.39 

Total 

Phosphorus 

Surface 

114.1 

92.90 

100.3 

124.5 

108.0 

0.1400E-01 

0.2300E-01 

0.2400E-01 

0.1000E-01 

0.1775E-01 

Upper 

16.58 

15.71 

15.27 

19.19 

16.69 

Lower 

0.3770 

0.4570 

0.3770 

0.2420 

0.3632 

Total 

16.97 

16.19 

15.67 

19.45 

17.07 

Deficit (lb/a) 

Nitrogen 

Surface 

1.286 

1.275 

1.275 

1.289 

1.281 

Upper 

11.85 

16.60 

12.06 

0.5044 

10.25 

Lower 

2.969 

19.44 

16.53 

3.873 

10.70 

Total 

16.10 

37.31 

29.86 

5.666 

22.23 

Phosphorus 

Surface 

1.387 

1.378 

1.376 

1.391 

1.383 

Upper 

5.836 

6.703 

7.145 

3.217 

5.725 

Lower 

3.826 

3.745 

3.825 

3.961 

3.839 

Total 

11.05 

11.83 

12.35 

8.568 

10.95 

Other Fluxes-Ib/ac 

N Mineralization 

34.31 

26.63 

28.16 

37.22 

31.58 

P Mineralization 

0.9062 

0.8417 

0.9122 

0.8956 

0.8889 

Denitrification 

1.034 

0.4527 

0.5640 

0.5858 

0.6591 

N Immobilization 

12.85 

10.09 

10.99 

13.55 

11.87 

P Immobilization 

5.375 

6.867 

6.616 

4.146 

5.751 


B34 


Appendix B West Branch Model Segments Results 




AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (HAY), SEGMENT 76 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

45.85 

35.21 

45.00 

35.72 

40.44 

Runoff (in) 

Surface 

8.382 

3.390 

7.356 

4.415 

5.886 

Interflow 

8.036 

4.227 

7.797 

5.628 

6.422 

Baseflow 

9.227 

6.625 

8.677 

7.172 

7.925 

Total 

25.65 

14.24 

23.83 

17.22 

20.23 

Sediment Loss (t/a) 

0.4810 

0.1040 

0.2760 

0.1600 

0.2553 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.7472 

0.2910 

0.3882 

0.5342 

0.4901 

Interflow 

4.488 

2.931 

3.805 

4.959 

4.046 

Baseflow 

9.442 

8.512 

11.02 

10.07 

9.761 

Total 

14.68 

11.73 

15.21 

15.57 

14.30 

NH3 Loss 

Surface 

2.435 

1.248 

0.4227 

0.8075 

1.228 

Interflow 

0.6138 

0.4551 

0.4352 

0.5999 

0.5260 

Baseflow 

0.6791E-01 

0.3173E-01 

0.3232E-01 

0.2266E-01 

0.3866E-01 

Sediment 

0.5871E-02 

0.1095E-02 

0.2822E-02 

0.1758E-02 

0.2887E-02 

Total 

3.122 

1.736 

0.8931 

1.432 

1.796 

ORGN Sediment 

1.261 

0.2564 

0.7061 

0.4060 

0.6574 

Total N Loss (Ib/a) 

19.06 

13.73 

16.81 

17.41 

16.75 

P04 Loss 

Surface 

1.132 

0.5492 

0.6253 

0.6819 

0.7471 

Interflow 

0.4341 

0.1546 

0.1408 

0.1936 

0.2308 

Baseflow 

0.1960E-02 

0.1132E-03 

0.1335E-03 

0.7227E-04 

0.5697E-03 

Sediment 

0.2236E-01 

0.4269E-02 

0.1187E-01 

0.7201E-02 

0.1143E-01 

Total 

1.591 

0.7082 

0.7782 

0.8828 

0.9901 

ORGP Sediment 

0.3386 

0.6889E-01 

0.1903 

0.1096 

0.1768 

Total P Loss (Ib/a) 

1.929 

0.7771 

0.9684 

0.9924 

1.167 

Atm Depn. N03 (Ib/a) 

8.423 

7.795 

8.222 

7.576 

8.004 

Atm Depn. NH4 (Ib/a) 

2.360 

2.035 

2.249 

1.909 

2.138 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

21.76 

21.95 

22.51 

22.17 

22.10 

Nitrate appln.(lb/a) 

7.260 

7.323 

7.510 

7.397 

7.373 

ORGN appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total N appln.(lb/a) 

29.02 

29.27 

30.02 

29.57 

29.47 

P04-p appln.(lb/a) 

12.57 

12.68 

13.00 

12.81 

12.76 

ORGP appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total P appln.(lb/a) 

12.57 

12.68 

13.00 

12.81 

12.76 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.9000E-02 

0.3000E-02 

0.4000E-02 

0.5000E-02 

0.5250E-02 

Upper 

20.64 

24.89 

23.94 

18.80 

22.07 

Lower 

17.68 

17.68 

17.68 

17.68 

17.68 

Total 

38.33 

42.58 

41.63 

36.49 

39.76 

Phosphorus 

Surface 

0.1400E-01 

0.5000E-02 

0.6000E-02 

0.8000E-02 

0.8250E-02 

Upper 

10.20 

11.35 

10.55 

10.02 

10.53 

Lower 

2.252 

2.251 

2.251 

2.251 

2.251 

Total 

12.47 

13.61 

12.81 

12.28 

12.79 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4413 

0.4471 

0.4461 

0.4448 

0.4448 

Upper 

6.289 

2.037 

2.979 

8.121 

4.857 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

6.730 

2.484 

3.425 

8.566 

5.301 

Phosphorus 

Surface 

0.7363 

0.7456 

0.7444 

0.7425 

0.7422 

Upper 

1.813 

0.6547 

1.458 

1.991 

1.479 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.549 

1.400 

2.202 

2.733 

2.221 

Other Fluxes-Ib/ac 

N Mineralization 

26.61 

26.92 

27.67 

26.20 

26.85 

P Mineralization 

1.194 

1.067 

1.106 

1.059 

1.107 

Denitrification 

2.346 

3.009 

3.091 

3.171 

2.904 

N Immobilization 

5.769 

6.927 

7.593 

7.025 

6.828 

P Immobilization 

3.443 

2.424 

2.356 

2.728 

2.738 


Appendix B West Branch Susquehanna Model Segments Results 


B35 




AGCHEH RESULTS FOR WEST BRANCH SUSQUEHANNA (HAY), SEGMENT 76 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

36.64 

38.39 

50.41 

34.96 

40.10 

Runoff (in) 

Surface 

5.859 

6.625 

9.622 

5.260 

6.842 

Interflow 

5.348 

6.761 

9.243 

5.034 

6.596 

Baseflow 

6.207 

8.035 

9.868 

6.565 

7.669 

Total 

17.41 

21.42 

28.73 

16.86 

21.11 

Sediment Loss (t/a) 

0.2760 

0.2950 

0.5200 

0.1390 

0.3075 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.5036 

0.5194 

0.4979 

0.4304 

0.4878 

Interflow 

3.446 

4.351 

4.915 

2.631 

3.836 

Baseflow 

10.24 

11.53 

11.91 

8.475 

10.54 

Total 

14.19 

16.41 

17.32 

11.54 

14.86 

NH3 Loss 

Surface 

0.6877 

0.6614 

0.5150 

0.2797 

0.5360 

Interflow 

0.5529 

0.6198 

0.5171 

0.2316 

0.4803 

Baseflow 

0.1812E-01 

0.2206E-01 

0.2578E-01 

0.1640E-01 

0.2059E-01 

Sediment 

0.2919E-02 

0.3192E-02 

0.5449E-02 

0.1363E-02 

0.3231E-02 

Total 

1.262 

1.306 

1.063 

0.5290 

1.040 

ORGN Sediment 

0.7219 

0.7747 

1.370 

0.3499 

0.8041 

Total N Loss (Ib/a) 

16.17 

18.49 

19.76 

12.42 

16.71 

P04 Loss 

Surface 

0.6192 

0.7818 

1.079 

0.3142 

0.6985 

Interflow 

0.1321 

0.1810 

0.1898 

0.9503E-01 

0.1495 

Baseflow 

0.4238E-04 

0.3198E-04 

0.1821E-04 

0.3573E-05 

0.2404E-04 

Sediment 

0.1269E-01 

0.1328E-01 

0.2396E-01 

0.5964E-02 

0.1397E-01 

Total 

0.7641 

0.9761 

1.293 

0.4152 

0.8621 

ORGP Sediment 

0.1950 

0.2104 

0.3709 

0.9646E-01 

0.2182 

Total P Loss (Ib/a) 

0.9591 

1.186 

1.664 

0.5117 

1.080 

Atm Depn. N03 (Ib/a) 

7.549 

7.930 

8.490 

7.365 

7.833 

Atm Depn. NH4 (Ib/a) 

1.909 

2.187 

2.351 

1.741 

2.047 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

22.51 

22.51 

22.51 

22.51 

22.51 

Nitrate appln.(lb/a) 

7.510 

7.510 

7.510 

7.510 

7.510 

ORGN appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total N appln.(lb/a) 

30.02 

30.02 

30.02 

30.02 

30.02 

P04-p appln.(lb/a) 

13.00 

13.00 

13.00 

13.00 

13.00 

ORGP appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total P appln.(lb/a) 

13.00 

13.00 

13.00 

13.00 

13.00 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.3000E-02 

0.7000E-02 

0.8000E-02 

0.3000E-02 

0.5250E-02 

Upper 

21.51 

23.41 

22.92 

23.88 

22.93 

Lower 

17.68 

17.68 

17.68 

17.68 

17.68 

Total 

39.20 

41.10 

40.62 

41.57 

40.62 

Phosphorus 

Surface 

0.5000E-02 

0.1000E-01 

0.1100E-01 

0.5000E-02 

0.7750E-02 

Upper 

10.27 

9.216 

11.17 

9.248 

9.978 

Lower 

2.252 

2.251 

2.251 

1.824 

2.145 

Total 

12.53 

11.48 

13.43 

11.08 

12.13 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4471 

0.4431 

0.4420 

0.4472 

0.4449 

Upper 

5.421 

3.508 

4.009 

3.036 

3.993 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

5.868 

3.951 

4.451 

3.484 

4.438 

Phosphorus 

Surface 

0.7458 

0.7404 

0.7392 

0.7452 

0.7427 

Upper 

1.735 

2.792 

0.8393 

2.758 

2.031 

Lower 

0.0000 

0.0000 

0.0000 

0.4270 

0.1067 

Total 

2.481 

3.532 

1.579 

3.930 

2.881 

Other Fluxes-Ib/ac 

N Mineralization 

28.23 

27.01 

27.04 

28.91 

27.80 

P Mineralization 

1.109 

1.040 

1.178 

0.9193 

1.062 

Denitrification 

3.703 

3.284 

3.036 

3.193 

3.304 

N Immobilization 

7.803 

7.159 

7.505 

8.064 

7.633 

P Immobilization 

2.556 

2.585 

2.153 

2.841 

2.534 


B36 


Appendix B West Branch Model Segments Results 



Percent of Total Load Contributed from Each Land Use in West Branch Susquehanna Basin 


Segment SO 




<-- 

FOR 

HTC 

LTC 

-Pervious- 

PAS 

URB 

HAY 

—><—; 

ANML 

Impervious- 

RES 

•> Point 
Source 

Total 

Load 

NH3 


84 

13.65 

9.67 

2.51 

3.37 

3.96 

8.46 

1.60 

0.93 

55.86 

100.00 


85 

13.74 

7.27 

1.67 

3.16 

2.61 

7.49 

1.55 

0.95 

61.57 

100.00 


86 

13.59 

10.69 

2.63 

3.09 

2.56 

4.54 

1.89 

1.00 

60.02 

100.00 


87 

10.26 

19.32 

6.46 

2.35 

2.04 

6.51 

1.20 

0.83 

51.01 

100.00 


88 

12.40 

11.67 

2.36 

2.75 

2.09 

4.44 

1.39 

1.01 

61.90 

100.00 


89 

10.91 

16.52 

5.00 

2.33 

1.75 

10.37 

1.17 

0.70 

51.22 

100.00 


90 

14.32 

12.68 

3.66 

3.23 

2.71 

4.72 

1.57 

0.89 

56.22 

100.00 

MEAN 

91 

11.98 

7.06 

2.13 

2.52 

1.66 

2.43 

1.27 

0.98 

69.97 

100.00 


12.54 

12.22 

3.44 

2.84 

2.41 

6.29 

1.44 

0.90 

57.91 

100.00 

N03 


84 

42.34 

11.08 

3.15 

16.52 

12.61 

11.92 

0.09 

0.43 

1.87 

100.00 


85 

48.03 

6.05 

1.61 

16.96 

11.91 

12.93 

0.08 

0.43 

1.99 

100.00 


86 

46.98 

6.88 

2.47 

16.22 

11.66 

13.18 

0.11 

0.47 

2.02 

100.00 


87 

41.39 

9.51 

3.15 

16.57 

11.79 

14.75 

0.09 

0.51 

2.25 

100.00 


88 

44.38 

9.42 

2.61 

16.10 

11.06 

13.79 

0.08 

0.47 

2.10 

100.00 


89 

42.15 

9.37 

2.82 

16.74 

11.71 

13.60 

0.08 

0.41 

3.12 

100.00 


90 

46.39 

8.06 

2.58 

16.57 

11.85 

11.54 

0.08 

0.39 

2.54 

100.00 

MEAN 

91 

50.20 

5.01 

1.33 

16.42 

11.05 

11.81 

0.08 

0.49 

3.61 

100.00 


45.23 

8.22 

2.48 

16.52 

11.73 

12.87 

0.09 

0.45 

2.43 

100.00 

ORGN 


84 

38.02 

4.92 

0.89 

11.29 

22.46 

2.11 

11.79 

4.07 

4.43 

100.00 


85 

31.90 

4.81 

0.84 

11.07 

16.77 

1.80 

18.25 

6.72 

7.82 

100.00 


86 

36.06 

6.29 

1.15 

10.62 

13.89 

2.57 

17.75 

5.61 

6.05 

100.00 


87 

31.97 

4.37 

0.75 

11.17 

17.32 

1.88 

17.37 

7.25 

7.93 

100.00 


88 

24.60 

3.39 

0.58 

10.26 

16.00 

1.38 

22.89 

9.86 

11.03 

100.00 


89 

26.68 

3.46 

0.62 

10.05 

14.79 

1.31 

21.26 

7.66 

14.17 

100.00 


90 

33.17 

4.44 

0.74 

11.32 

16.61 

1.92 

16.85 

5.74 

9.21 

100.00 

MEAN 

91 

21.49 

2.36 

0.33 

8.33 

10.99 

0.73 

24.28 

11.18 

20.32 

100.00 


32.12 

4.52 

0.79 

10.73 

16.87 

1.85 

17.65 

6.59 

8.90 

100.00 

TN 

84 

37.08 

10.03 

2.75 

13.70 

12.46 

10.06 

2.21 

0.98 

10.73 

100.00 


85 

41.01 

6.13 

1.55 

14.19 

10.76 

11.10 

2.18 

1.02 

12.07 

100.00 


86 

40.17 

7.41 

2.35 

13.42 

10.35 

10.60 

2.70 

1.09 

11.90 

100.00 


87 

34.00 

11.06 

3.62 

13.11 

10.20 

11.89 

2.17 

1.15 

12.80 

100.00 


88 

37.51 

9.40 

2.43 

13.39 

9.79 

11.37 

2.08 

1.15 

12.89 

100.00 


89 

34.50 

10.41 

3.11 

13.25 

9.82 

12.04 

2.11 

0.97 

13.78 

100.00 


90 

39.94 

8.44 

2.57 

13.92 

10.78 

9.57 

2.18 

0.95 

11.66 

100.00 

MEAN 

91 

41.39 

5.22 

1.41 

13.35 

9.29 

9.42 

2.04 

1.19 

16.70 

100.00 


38.19 

8.57 

2.50 

13.56 

10.49 

10.73 

2.21 

1.05 

12.69 

100.00 

P04 


84 

4.59 

7.73 

2.17 

1.66 

5.24 

20.76 

1.53 

1.63 

54.67 

100.00 


85 

4.33 

6.35 

1.45 

1.76 

2.95 

16.14 

1.56 

1.77 

63.68 

100.00 


86 

4.59 

10.44 

2.92 

1.66 

2.97 

13.13 

1.86 

1.82 

60.59 

100.00 


87 

3.79 

7.63 

2.01 

1.47 

2.78 

18.30 

1.40 

1.80 

60.82 

100.00 


88 

3.82 

7.86 

2.35 

1.67 

2.26 

12.50 

1.44 

1.92 

66.22 

100.00 


89 

4.54 

8.93 

2.86 

1.79 

2.42 

26.44 

1.55 

1.72 

49.75 

100.00 


90 

5.80 

11.75 

3.28 

2.25 

3.91 

18.34 

1.92 

2.03 

50.71 

100.00 

MEAN 

91 

5.17 

5.88 

1.47 

2.15 

2.13 

9.11 

1.73 

2.46 

69.92 

100.00 


4.56 

8.41 

2.34 

1.79 

3.16 

17.22 

1.62 

1.87 

59.07 

100.00 

ORGP 


84 

30.03 

7.56 

1.31 

8.92 

17.75 

3.14 

10.87 

3.22 

17.18 

100.00 


85 

22.71 

6.64 

1.12 

7.88 

11.94 

2.41 

15.16 

4.78 

27.34 

100.00 


86 

26.56 

8.99 

1.59 

7.82 

10.24 

3.57 

15.25 

4.13 

21.87 

100.00 


87 

22.78 

6.05 

1.00 

7.96 

12.34 

2.53 

14.43 

5.17 

27.74 

100.00 


88 

16.19 

4.33 

0.72 

6.75 

10.53 

1.72 

17.57 

6.48 

35.71 

100.00 


89 

20.60 

5.19 

0.90 

7.76 

11.42 

1.90 

19.15 

5.92 

27.17 

100.00 


90 

26.96 

7.02 

1.13 

9.21 

13.50 

2.94 

15.98 

4.66 

18.59 

100.00 

MEAN 

91 

15.64 

3.34 

0.44 

6.06 

8.00 

0.99 

20.62 

8.14 

36.74 

100.00 


24.01 

6.56 

1.11 

8.02 

12.62 

2.60 

15.40 

4.93 

24.77 

100.00 


Appendix B West Branch Susquehanna Model Segments Results 


B37 





Segment 


50 




<. 

FOR 

HTC 

LTC 

■Pervious-- 

PAS 

URB 

TP 


84 

13.48 

7.52 

1.83 

4.19 

9.55 


85 

9.48 

6.30 

1.32 

3.47 

5.45 


86 

11.51 

9.72 

2.42 

3.60 

5.22 


87 

8.91 

7.05 

1.69 

3.22 

5.34 


88 

6.72 

6.84 

1.90 

2.86 

4.21 


89 

8.27 

7.83 

2.33 

3.17 

4.51 


90 

12.36 

9.95 

2.51 

4.40 

6.85 


91 

7.60 

5.11 

1.18 

3.06 

3.51 

MEAN 


10.09 

7.68 

1.93 

3.55 

5.83 

BOD 


84 

42.57 

6.53 

0.79 

12.65 

25.15 


85 

38.97 

6.05 

0.82 

13.52 

20.49 


86 

44.55 

7.57 

0.99 

13.11 

17.16 


87 

38.41 

7.15 

0.87 

13.42 

20.80 


88 

32.16 

5.69 

0.82 

13.41 

20.92 


89 

35.93 

6.21 

0.94 

13.54 

19.91 


90 

41.29 

6.95 

0.87 

14.10 

20.67 


91 

31.71 

5.21 

0.84 

12.28 

16.21 

MEAN 


39.66 

6.59 

0.86 

13.26 

20.84 

SED 


84 

58.45 

9.78 

1.43 

12.22 

12.65 


85 

57.42 

11.69 

1.67 

13.53 

9.69 


86 

60.94 

12.53 

1.89 

11.18 

6.87 


87 

51.88 

12.02 

1.71 

15.64 

11.78 


88 

46.56 

13.51 

1.89 

17.70 

12.52 


89 

51.09 

13.09 

1.93 

16.13 

10.62 


90 

53.28 

12.01 

1.66 

15.45 

10.78 


91 

42.01 

16.51 

2.22 

20.70 

9.34 

MEAN 


55.58 

11.78 

1.70 

13.90 

10.55 


B38 



--><— 

Impervious- 

> Point 

Total 

HAY 

ANHL 

RES 

Source 

Load 

14.15 

6.71 

2.16 

40.41 

100.00 

11.88 

7.56 

2.59 

51.96 

100.00 

9.75 

8.55 

2.51 

46.71 

100.00 

13.63 

6.91 

2.68 

50.58 

100.00 

9.63 

7.42 

2.98 

57.45 

100.00 

19.99 

8.00 

2.68 

43.23 

100.00 

13.00 

8.86 

2.81 

39.25 

100.00 

6.89 

8.84 

3.79 

60.01 

100.00 

12.61 

7.80 

2.71 

47.80 

100.00 

2.90 

1.43 

1.37 

6.62 

100.00 

2.56 

2.41 

2.46 

12.72 

100.00 

3.38 

2.37 

2.08 

8.76 

100.00 

3.21 

2.26 

2.61 

11.26 

100.00 

2.72 

3.24 

3.86 

17.20 

100.00 

2.93 

3.10 

3.10 

14.34 

100.00 

3.10 

2.27 

2.14 

8.61 

100.00 

2.39 

3.88 

4.95 

22.53 

100.00 

2.96 

2.36 

2.44 

11.02 

100.00 


5.44 

0.00 

0.00 

0.00 

100.00 

6.00 

0.00 

0.00 

0.00 

100.00 

6.61 

0.00 

0.00 

0.00 

100.00 

6.96 

0.00 

0.00 

0.00 

100.00 

7.84 

0.00 

0.00 

0.00 

100.00 

7.15 

0.00 

0.00 

0.00 

100.00 

6.82 

0.00 

0.00 

0.00 

100.00 

9.17 

0.00 

0.00 

0.00 

100.00 

6.48 

0.00 

0.00 

0.00 

100.00 


Appendix B West Branch Model Segments Results 





Segment 


60 




<- 

FOR 

HTC 

LTC 

■Pervious 

PAS 

NH3 


84 

19.98 

19.19 

13.07 

3.11 


85 

19.10 

13.52 

9.49 

2.61 


86 

19.82 

15.01 

8.65 

2.75 


87 

17.90 

15.36 

10.58 

2.53 


88 

16.28 

17.52 

10.35 

2.29 


89 

17.60 

21.33 

16.31 

2.37 


90 

22.56 

17.10 

13.08 

3.12 


91 

19.97 

13.83 

9.48 

2.68 

MEAN 


19.25 

16.91 

11.66 

2.71 

N03 


84 

42.55 

13.13 

9.45 

10.36 


85 

48.32 

7.97 

5.27 

10.33 


86 

46.07 

9.86 

6.98 

10.04 


87 

38.28 

12.74 

8.90 

9.40 


88 

38.65 

14.74 

9.68 

8.76 


89 

38.82 

14.36 

10.23 

9.87 


90 

44.96 

10.80 

8.26 

10.56 


91 

50.17 

7.72 

5.40 

10.49 

MEAN 


43.39 

11.52 

8.15 

10.02 

ORGN 


84 

40.89 

9.21 

4.49 

12.97 


85 

22.98 

5.55 

2.57 

9.72 


86 

27.85 

7.99 

4.19 

9.63 


87 

34.87 

5.36 

2.68 

10.35 


88 

20.88 

5.10 

1.96 

10.63 


89 

29.56 

6.40 

3.02 

10.43 


90 

30.14 

5.66 

2.60 

11.50 


91 

20.62 

3.63 

1.53 

6.13 

MEAN 


31.36 

6.82 

3.27 

10.84 

TN 


84 

39.51 

13.12 

9.03 

9.91 


85 

42.58 

8.42 

5.55 

9.29 


86 

41.07 

10.22 

6.87 

9.11 


87 

35.35 

12.31 

8.48 

8.63 


88 

34.53 

14.33 

9.17 

8.07 


89 

35.10 

14.57 

10.40 

8.88 


90 

41.08 

11.01 

8.28 

9.78 


91 

44.50 

8.11 

5.59 

9.25 

MEAN 


39.22 

11.66 

8.06 

9.19 

P04 


84 

6.54 

10.57 

7.98 

1.37 


85 

4.76 

7.41 

5.24 

1.23 


86 

4.20 

8.94 

5.32 

1.06 


87 

4.08 

8.25 

6.21 

1.00 


88 

3.34 

12.19 

9.22 

0.91 


89 

5.60 

14.73 

12.56 

1.37 


90 

6.49 

12.69 

9.84 

1.67 


91 

5.82 

7.59 

4.77 

1.61 

MEAN 


5.09 

10.39 

7.70 

1.26 

ORGP 


84 

32.87 

14.38 

6.74 

10.43 


85 

17.56 

8.23 

3.66 

7.43 


86 

20.24 

11.28 

5.67 

6.99 


87 

27.57 

8.24 

3.97 

8.19 


88 

15.65 

7.40 

2.74 

7.97 


89 

24.32 

10.24 

4.65 

8.59 


90 

25.22 

9.22 

4.07 

9.63 


91 

17.09 

5.84 

2.37 

5.08 

MEAN 


24.82 

10.49 

4.84 

8.58 




-><- 

Impervious- 

•> Point 

Total 

URB 

HAY 

ANML 

RES 

Source 

Load 

1.95 

13.58 

2.92 

1.05 

25.12 

100.00 

1.13 

12.48 

2.75 

1.48 

37.46 

100.00 

1.10 

6.61 

3.07 

1.32 

41.69 

100.00 

1.04 

12.95 

2.64 

1.44 

35.58 

100.00 

0.95 

7.52 

2.42 

1.54 

41.10 

100.00 

0.95 

9.22 

2.36 

1.09 

28.78 

100.00 

1.27 

9.64 

3.15 

1.29 

28.77 

100.00 

1.07 

5.65 

2.81 

1.73 

42.77 

100.00 

1.22 

9.91 

2.78 

1.33 

34.19 

100.00 

4.35 

16.92 

0.11 

0.42 

2.75 

100.00 

3.95 

19.48 

0.11 

0.57 

4.00 

100.00 

3.83 

18.34 

0.11 

0.49 

4.29 

100.00 

3.59 

22.67 

0.10 

0.55 

3.77 

100.00 

3.32 

19.89 

0.09 

0.58 

4.30 

100.00 

3.77 

19.00 

0.10 

0.46 

3.38 

100.00 

4.05 

18.05 

0.11 

0.44 

2.73 

100.00 

3.92 

17.33 

0.10 

0.62 

4.25 

100.00 

3.88 

18.85 

0.10 

0.51 

3.59 

100.00 

6.83 

5.42 

12.57 

2.22 

5.40 

100.00 

5.54 

3.01 

26.05 

6.88 

17.72 

100.00 

3.90 

4.24 

22.32 

4.73 

15.18 

100.00 

4.11 

2.98 

20.41 

5.48 

13.76 

100.00 

4.84 

2.90 

24.86 

7.75 

21.09 

100.00 

4.41 

3.50 

23.29 

5.25 

14.18 

100.00 

5.02 

3.22 

25.27 

5.09 

11.52 

100.00 

4.68 

1.75 

29.88 

9.04 

22.74 

100.00 

5.22 

3.84 

20.87 

4.92 

12.84 

100.00 


4.45 

14.64 

2.90 

0.77 

5.69 

100.00 

3.71 

17.27 

2.93 

1.16 

9.11 

100.00 

3.51 

15.56 

3.09 

0.99 

9.61 

100.00 

3.32 

19.59 

2.74 

1.11 

8.44 

100.00 

3.13 

17.12 

2.55 

1.20 

9.89 

100.00 

3.44 

16.38 

2.72 

0.92 

7.58 

100.00 

3.81 

15.83 

3.01 

0.91 

6.27 

100.00 

3.63 

14.89 

2.84 

1.29 

9.89 

100.00 

3.67 

16.29 

2.86 

1.02 

8.05 

100.00 

2.51 

25.92 

2.53 

1.87 

40.71 

100.00 

1.06 

15.87 

2.34 

2.56 

59.50 

100.00 

0.81 

14.42 

2.07 

1.82 

61.37 

100.00 

0.83 

26.55 

1.92 

2.16 

49.01 

100.00 

0.74 

13.25 

1.75 

2.24 

56.37 

100.00 

1.03 

20.06 

2.40 

2.26 

39.99 

100.00 

1.28 

26.75 

2.88 

2.43 

35.95 

100.00 

1.05 

15.57 

2.75 

3.47 

57.34 

100.00 

1.20 

20.17 

2.31 

2.27 

49.61 

100.00 

5.49 

8.17 

11.79 

1.79 

8.36 

100.00 

4.23 

4.32 

23.24 

5.26 

26.07 

100.00 

2.84 

5.78 

18.93 

3.44 

24.81 

100.00 

3.25 

4.44 

18.83 

4.34 

21.18 

100.00 

3.63 

4.08 

21.74 

5.81 

30.96 

100.00 

3.63 

5.43 

22.36 

4.32 

16.47 

100.00 

4.20 

5.10 

24.68 

4.26 

13.61 

100.00 

3.88 

2.72 

28.91 

7.50 

26.61 

100.00 

4.13 

5.70 

19.27 

3.89 

18.27 

100.00 


Appendix B West Branch Susquehanna Model Segments Results 


B39 






Segment 


60 




<- 

FOR 

HTC 

LTC 

■ Pervious -- 
PAS 

URB 

TP 


84 

18.22 

12.01 

7.21 

5.41 

3.79 


85 

8.17 

7.39 

4.63 

2.92 

1.91 


86 

8.82 

9.38 

5.28 

2.78 

1.38 


87 

10.60 

8.02 

5.41 

3.00 

1.49 


88 

6.17 

10.74 

7.45 

2.56 

1.41 


89 

10.85 

12.95 

9.86 

3.42 

1.75 


90 

11.98 

11.15 

7.71 

4.04 

2.13 


91 

8.59 

6.84 

3.95 

2.46 

1.76 

MEAN 


11.14 

10.10 

6.57 

3.52 

2.09 

BOD 


84 

48.77 

12.17 

4.07 

15.47 

8.15 


85 

39.32 

10.39 

3.62 

16.63 

9.47 


86 

42.79 

12.41 

4.36 

14.79 

6.00 


87 

49.71 

10.03 

3.28 

14.76 

5.85 


88 

36.22 

10.74 

3.26 

18.44 

8.40 


89 

44.48 

11.04 

4.12 

15.71 

6.64 


90 

45.17 

10.14 

3.46 

17.23 

7.52 


91 

39.95 

8.97 

3.52 

11.86 

9.08 

MEAN 


45.29 

11.19 

3.83 

15.65 

7.54 

SED 


84 

57.96 

13.83 

5.44 

8.94 

3.71 


85 

43.16 

18.42 

6.95 

13.04 

5.08 


86 

49.13 

18.51 

7.84 

9.39 

2.38 


87 

58.55 

13.05 

5.32 

10.69 

2.74 


88 

41.95 

18.14 

5.93 

15.64 

4.63 


89 

52.42 

16.03 

6.15 

10.85 

2.83 


90 

51.74 

15.09 

5.73 

12.43 

3.45 


91 

41.76 

20.20 

7.34 

11.11 

5.48 

MEAN 


53.50 

15.37 

6.01 

10.41 

3.50 


B40 



--><—Impervious-> Point 

Total 

HAY 

ANML RES Source 

Load 


17.24 

9.29 

1.78 

25.06 

100.00 

12.15 

11.30 

3.23 

48.30 

100.00 

11.46 

9.79 

2.25 

48.86 

100.00 

19.61 

9.30 

2.72 

39.84 

100.00 

10.74 

9.01 

3.03 

48.91 

100.00 

15.16 

11.36 

2.79 

31.87 

100.00 

19.11 

13.22 

2.90 

27.77 

100.00 

11.57 

13.41 

4.40 

47.01 

100.00 

15.02 

10.60 

2.71 

38.26 

100.00 

7.70 

1.62 

0.79 

1.26 

100.00 

6.25 

4.83 

3.53 

5.93 

100.00 

6.98 

3.71 

2.18 

6.76 

100.00 

5.79 

3.15 

2.35 

5.09 

100.00 

6.60 

4.66 

4.03 

7.69 

100.00 

7.10 

3.79 

2.37 

4.74 

100.00 

6.30 

4.10 

2.29 

3.84 

100.00 

5.31 

6.27 

5.25 

9.79 

100.00 

6.86 

3.26 

2.13 

4.26 

100.00 


10.12 

0.00 

0.00 

0.00 

100.00 

13.34 

0.00 

0.00 

0.00 

100.00 

12.73 

0.00 

0.00 

0.00 

100.00 

9.67 

0.00 

0.00 

0.00 

100.00 

13.72 

0.00 

0.00 

0.00 

100.00 

11.73 

0.00 

0.00 

0.00 

100.00 

11.58 

0.00 

0.00 

0.00 

100.00 

14.12 

0.00 

0.00 

0.00 

100.00 

11.22 

0.00 

0.00 

0.00 

100.00 


Appendix B West Branch Model Segments Results 





Segment 


70 







■ Pervious -- 



-><- 

Impervious - 

■> Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

NH 3 

84 

6.20 

18.30 

10.89 

1.28 

1.10 

21.44 

2.16 

1.12 

37.47 

100.00 


85 

5.00 

13.18 

7.77 

1.04 

0.58 

16.69 

1.98 

1.45 

52.32 

100.00 


86 

5.88 

26.82 

18.54 

1.14 

0.73 

6.14 

2.25 

1.15 

37.35 

100.00 


87 

5.18 

20.71 

13.64 

1.02 

0.60 

11.58 

1.89 

1.30 

44.03 

100.00 


88 

4.46 

25.24 

16.08 

0.86 

0.55 

9.29 

1.80 

1.14 

40.54 

100.00 


89 

4.48 

33.63 

23.96 

0.86 

0.55 

7.53 

1.56 

0.86 

26.55 

100.00 


90 

5.87 

33.30 

22.45 

1.13 

0.71 

6.26 

2.13 

1.04 

27.13 

100.00 


91 

5.71 

23.23 

17.10 

1.11 

0.69 

4.99 

2.18 

1.52 

43.49 

100.00 

MEAN 


5.35 

25.26 

16.98 

1.05 

0.69 

10.28 

1.99 

1.16 

37.25 

100.00 

N 03 

84 

16.36 

28.57 

21.43 

5.83 

3.42 

18.91 

0.10 

0.46 

4.92 

100.00 


85 

17.25 

23.51 

15.54 

6.10 

3.33 

25.25 

0.11 

0.71 

8.20 

100.00 


86 

20.42 

22.75 

17.00 

6.56 

3.63 

23.16 

0.12 

0.55 

5.80 

100.00 


87 

18.12 

21.11 

14.23 

6.26 

3.42 

29.00 

0.11 

0.65 

7.10 

100.00 


88 

15.53 

26.77 

18.09 

5.19 

2.87 

24.27 

0.10 

0.58 

6.59 

100.00 


89 

14.03 

29.41 

20.04 

5.35 

3.01 

23.09 

0.10 

0.46 

4.54 

100.00 


90 

19.02 

24.11 

19.39 

6.44 

3.62 

22.59 

0.12 

0.50 

4.20 

100.00 


91 

25.51 

15.13 

10.10 

7.64 

4.14 

28.50 

0.14 

0.86 

7.97 

100.00 

MEAN 


17.92 

24.59 

17.64 

6.10 

3.41 

23.80 

0.11 

0.57 

5.87 

100.00 

ORGN 

84 

13.54 

25.56 

13.82 

4.44 

5.01 

9.17 

13.74 

2.79 

11.90 

100.00 


85 

12.97 

19.94 

11.18 

2.92 

2.12 

3.75 

18.05 

5.20 

23.87 

100.00 


86 

9.42 

23.96 

13.15 

3.33 

3.30 

7.06 

19.60 

3.89 

16.28 

100.00 


87 

11.23 

18.22 

10.06 

2.94 

2.82 

5.82 

20.15 

5.39 

23.40 

100.00 


88 

13.57 

23.33 

12.83 

2.72 

2.53 

7.72 

15.70 

3.93 

17.67 

100.00 


89 

12.61 

24.74 

14.76 

3.16 

2.92 

7.83 

16.47 

3.56 

13.97 

100.00 


90 

11.01 

31.89 

19.28 

2.40 

2.28 

8.51 

13.51 

2.56 

8.59 

100.00 


91 

6.69 

29.73 

11.28 

3.23 

2.88 

4.62 

18.32 

4.97 

18.28 

100.00 

MEAN 


11.52 

25.54 

14.04 

3.16 

3.07 

7.26 

16.34 

3.74 

15.32 

100.00 

TN 

84 

14.53 

26.66 

18.91 

5.00 

3.29 

17.91 

2.59 

0.85 

10.26 

100.00 


85 

14.72 

21.33 

13.73 

4.90 

2.74 

21.45 

2.81 

1.30 

17.01 

100.00 


86 

16.77 

23.41 

16.73 

5.30 

3.11 

18.53 

3.15 

1.01 

11.98 

100.00 


87 

15.20 

20.68 

13.67 

5.03 

2.87 

23.72 

2.79 

1.20 

14.84 

100.00 


88 

13.40 

26.00 

17.07 

4.17 

2.43 

19.78 

2.62 

1.05 

13.47 

100.00 


89 

12.15 

29.56 

20.12 

4.32 

2.55 

18.73 

2.41 

0.84 

9.33 

100.00 


90 

15.74 

26.55 

19.74 

5.00 

2.96 

17.91 

2.87 

0.88 

8.35 

100.00 


91 

19.38 

18.37 

11.45 

5.86 

3.33 

21.06 

3.43 

1.50 

15.62 

100.00 

MEAN 


15.05 

24.69 

17.02 

4.91 

2.91 

19.56 

2.80 

1.03 

12.01 

100.00 

P 04 

84 

1.13 

10.19 

7.12 

0.39 

0.84 

24.79 

1.23 

1.24 

53.06 

100.00 


85 

0.71 

7.33 

5.72 

0.28 

0.28 

14.35 

1.04 

1.48 

68.81 

100.00 


86 

1.09 

13.42 

9.87 

0.40 

0.51 

13.43 

1.41 

1.40 

58.49 

100.00 


87 

0.86 

7.43 

5.05 

0.34 

0.36 

17.18 

1.14 

1.52 

66.11 

100.00 


88 

0.84 

12.36 

10.31 

0.29 

0.37 

13.40 

1.07 

1.30 

60.07 

100.00 


89 

1.02 

16.93 

14.97 

0.36 

0.45 

16.84 

1.17 

1.26 

47.02 

100.00 


90 

1.28 

17.02 

14.01 

0.44 

0.53 

20.57 

1.44 

1.37 

43.37 

100.00 


91 

1.06 

9.08 

6.39 

0.40 

0.49 

. 10.46 

1.46 

1.96 

68.72 

100.00 

MEAN 


1.01 

12.02 

9.45 

0.36 

0.49 

16.82 

1.24 

1.41 

57.19 

100.00 

ORGP 

84 

8.21 

30.06 

15.64 

2.69 

3.04 

10.44 

9.72 

1.69 

18.53 

100.00 


85 

7.53 

22.48 

12.10 

1.69 

1.23 

4.09 

12.22 

3.02 

35.60 

100.00 


86 

5.57 

27.48 

14.52 

1.97 

1.95 

7.88 

13.53 

2.30 

24.78 

100.00 


87 

6.56 

20.66 

10.96 

1.72 

1.65 

6.42 

13.73 

3.15 

35.12 

100.00 


88 

7.98 

26.59 

14.07 

1.60 

1.49 

8.58 

10.77 

2.31 

26.61 

100.00 


89 

7.60 

28.94 

16.62 

1.90 

1.76 

8.96 

11.57 

2.14 

20.49 

100.00 


90 

6.51 

36.65 

21.35 

1.42 

1.35 

9.53 

9.32 

1.52 

12.36 

100.00 


91 

3.91 

33.66 

12.29 

1.89 

1.68 

5.21 

12.48 

2.90 

25.97 

100.00 

MEAN 


6.83 

29.37 

15.54 

1.87 

1.82 

8.14 

11.29 

2.22 

22.90 

100.00 


Appendix B West Branch Susquehanna Model Segments Results 


B41 





70 


Segment 




<. 

FOR 

HTC 

ETC 

■ Pervious -- 

PAS 

URB 

TP 


84 

3.45 

16.58 

9.82 

1.14 

1.55 


85 

2.41 

11.01 

7.23 

0.63 

0.51 


86 

2.36 

17.21 

11.02 

0.85 

0.92 


87 

2.25 

10.55 

6.42 

0.67 

0.67 


88 

2.83 

16.17 

11.21 

0.65 

0.68 


89 

2.87 

20.06 

15.20 

0.79 

0.81 


90 

3.22 

24.09 

16.52 

0.80 

0.83 


91 

1.93 

16.57 

8.11 

0.85 

0.85 

MEAN 


2.74 

17.03 

11.12 

0.81 

0.88 

BOO 


84 

25.97 

26.16 

8.96 

8.53 

9.61 


85 

29.95 

23.12 

8.75 

6.73 

4.88 


86 

20.97 

28.16 

10.24 

7.42 

7.35 


87 

24.98 

23.62 

8.69 

6.54 

6.28 


88 

27.59 

27.52 

9.43 

5.53 

5.14 


89 

25.80 

27.29 

10.47 

6.46 

5.98 


90 

23.63 

33.59 

12.35 

5.14 

4.89 


91 

15.68 

33.37 

9.26 

7.58 

6.74 

MEAN 


24.43 

28.33 

10.02 

6.71 

6.51 

SED 


84 

14.83 

40.81 

17.78 

5.56 

2.98 


85 

21.34 

43.08 

19.40 

4.47 

1.17 


86 

11.21 

45.15 

20.19 

4.58 

1.94 


87 

16.50 

41.95 

18.43 

4.60 

1.75 


88 

16.59 

42.25 

18.71 

3.64 

1.43 


89 

15.46 

42.33 

20.16 

3.96 

1.55 


90 

10.87 

47.16 

22.81 

2.57 

1.02 


91 

6.90 

57.36 

17.83 

4.64 

1.71 

MEAN 


13.64 

44.79 

19.81 

4.10 

1.73 


B42 



--><— 

Impervious - 

> Point 

Total 

HAY 

ANHL 

RES 

Source 

Load 

19.65 

5.62 

1.37 

40.80 

100.00 

11.56 

5.36 

1.85 

59.43 

100.00 

11.56 

6.83 

1.63 

47.62 

100.00 

14.26 

5.89 

1.89 

57.41 

100.00 

11.85 

5.29 

1.56 

49.78 

100.00 

14.33 

5.74 

1.49 

38.73 

100.00 

16.06 

6.12 

1.40 

30.95 

100.00 

8.62 

6.81 

2.22 

54.03 

100.00 

13.93 

5.94 

1.63 

45.92 

100.00 

11.12 

2.85 

1.61 

5.21 

100.00 

5.94 

4.51 

3.60 

12.54 

100.00 

9.79 

4.72 

2.60 

8.77 

100.00 

8.94 

4.85 

3.59 

12.50 

100.00 

10.55 

3.45 

2.40 

8.41 

100.00 

10.19 

3.64 

2.18 

7.96 

100.00 

10.46 

3.14 

1.65 

5.14 

100.00 

7.31 

4.65 

3.49 

11.93 

100.00 

9.73 

3.75 

2.38 

8.10 

100.00 


18.06 

0.00 

0.00 

0.00 

100.00 

10.55 

0.00 

0.00 

0.00 

100.00 

16.95 

0.00 

0.00 

0.00 

100.00 

16.78 

0.00 

0.00 

0.00 

100.00 

17.35 

0.00 

0.00 

0.00 

100.00 

16.57 

0.00 

0.00 

0.00 

100.00 

15.57 

0.00 

0.00 

0.00 

100.00 

11.55 

0.00 

0.00 

0.00 

100.00 

15.91 

0.00 

0.00 

0.00 

100.00 


Appendix B West Branch Model Segments Results 





Per Acre Load Contributed from Each Land Use in West Branch Susquehanna Basin (Ib/ac) 


Segment 50 


<-- 

NH3 

FOR 

HTC 

LTC PAS 

URB 

HAY 

-Impervious-> 

ANML RES 

84 

0.156 

4.393 

4.463 

0.368 

0.819 

2.607 

313.1727 

1.06 

85 

0.142 

2.989 

2.686 

0.313 

0.488 

2.09 

273.7041 

0.985 

86 

0.144 

4.501 

4.34 

0.313 

0.491 

1.299 

342.381 

1.06 

87 

0.128 

9.582 

12.56 

0.281 

0.46 

2.192 

256.3925 

1.04 

88 

0.128 

4.787 

3.798 

0.272 

0.39 

1.236 

245.1919 

1.04 

89 

0.153 

9.207 

10.91 

0.313 

0.444 

3.922 

280.8457 

0.982 

90 

0.183 

6.435 

7.276 

0.394 

0.626 

1.626 

342.5437 

1.14 

91 

0.123 

2.881 

3.406 

0.247 

0.308 

0.6736 

223.6858 

1.0 

1992 0 

.144625 

5.596875 

6.179875 

0.312625 

0.50325 

1.9557 

284.7397 

1.038375 

N03 

84 

2.17 

22.59 

25.19 

8.1 

11.7 

16.48 

78.29317 

2.21 

85 

2.32 

11.61 

12.09 

7.83 

10.4 

16.84 

68.42602 

2.05 

86 

2.22 

12.92 

18.21 

7.33 

9.969999 

16.79 

85.59524 

2.21 

87 

1.76 

16.08 

20.87 

6.74 

9.07 

16.92 

64.09812 

2.17 

88 

2.04 

17.21 

18.71 

7.08 

9.2 

17.1 

61.29798 

2.16 

89 

2.07 

18.28 

21.54 

7.86 

10.4 

18.01 

70.21142 

2.03 

90 

2.79 

19.26 

24.12 

9.53 

12.9 

18.73 

85.63592 

2.37 

91 

2.13 

8.443 

8.763 

6.66 

8.48 

13.51 

55.92144 

2.09 

1992 

2.1875 

15.79913 

18.68663 

7.64125 

10.265 

16.7975 

71.18492 

2.16125 


Total 

Load 

0.407338 

0.320939 

0.342147 

0.493501 

0.317629 

0.551973 

0.451454 

0.248895 

0.391734 


4.062413 

3.820746 

3.737557 

3.356731 

3.634237 

3.840882 

4.733065 

3.301344 

3.810872 


ORGN 


84 

0.353934 

1.822 

85 

0.167692 

1.005 

86 

0.243747 

1.691 

87 

0.165466 

0.8992 

88 

0.092379 

0.5055 

89 

0.123543 

0.6369 

90 

0.236327 

1.258 

91 

0.069377 

0.3032 

1992 0.181558 

1.0151 

TN 

84 

2.679934 

28.81 

85 

2.629692 

15.61 

86 

2.607747 

19.11 

87 

2.053466 

26.56 

88 

2.260379 

22.51 

89 

2.346543 

28.12 

90 

3.209327 

26.95 

91 

2.322377 

11.63 

1992 

2.513683 

22.4125 

P04 

84 

0.01375 

0.9205 

85 

0.0111 

0.6475 

86 

0.01231 

1.113 

87 

0.01017 

0.8133 

88 

0.009511 

0.7781 

89 

0.01204 

0.9406 

90 

0.0151 

1.214 

91 

0.009745 

0.4408 

1992 0.011716 

0.858475 

ORGP 



84 

0.050562 

0.5055 

85 

0.023956 

0.2783 

86 

0.034821 

0.4686 

87 

0.023638 

0.2496 

88 

0.013197 

0.1402 

89 

0.017649 

0.1766 

90 

0.033761 

0.3496 

91 

0.009911 

0.08413 

1992 0.025937 

0.281566 


1.289 

1.00541 

3.7842 

0.5311 

1879.036 

3.7842 

0.718328 

0.6908 

0.5565 

1.5953 

0.255 

1642.225 

3.5245 

0.391149 

1.215 

0.68635 

1.69918 

0.4684 

2054.286 

3.7842 

0.512729 

0.605 

0.55279 

1.62127 

0.2629 

1538.355 

3.7471 

0.384741 

0.3416 

0.368403 

1.08703 

0.1395 

1471.152 

3.69516 

0.269677 

0.4491 

0.4452 

1.23914 

0.1635 

1685.074 

3.54305 

0.320914 

0.824 

0.77168 

2.14067 

0.3696 

2055.262 

4.081 

0.522308 

0.1644 

0.257103 

0.64183 

0.0634 

1342.115 

3.60241 

0.2077 

0.697362 

0.580429 

1.726077 

0.281675 

1708.438 

3.720202 

0.415943 

30.94 

9.473411 

16.3032 

19.62 

2740.261 

7.0542 

5.210382 

15.47 

8.6995 

12.4833 

19.19 

2394.911 

6.5595 

4.552485 

23.76 

8.32935 

12.16018 

18.56 

2995.833 

7.0542 

4.616666 

34.04 

7.57379 

11.15127 

19.38 

2243.434 

6.9571 

4.253266 

22.85‘ 

7.720403 

10.67703 

18.48 

2145.429 

6.89516 

4.239178 

32.9 

8.6182 

12.08314 

22.09 

2457.4 

6.55505 

4.733399 

32.22 

10.69568 

15.66667 

20.73 

2997.257 

7.591 

5.731131 

12.33 

7.164103 

9.42983 

14.25 

1957.25 

6.69241 

3.773892 

25.56375 

8.534305 

12.49433 

19.0375 

2491.472 

6.919827 

4.6388 

1.014 

0.0475 

0.284 

1.678 

78.29317 

0.487 

0.109606 

0.5793 

0.04319 

0.137 

1.117 

68.42602 

0.454 

0.075216 

1.22 

0.04269 

0.144 

0.9496 

85.59524 

0.487 

0.085308 

0.8372 

0.03778 

0.135 

1.323 

64.09812 

0.481 

0.084806 

0.9113 

0.03968 

0.102 

0.8402 

61.29798 

0.477 

0.068013 

1.182 

0.04529 

0.116 

1.891 

70.21142 

0.455 

0.107557 

1.328 

0.05605 

0.184 

1.286 

85.63592 

0.527 

0.103481 

0.4313 

0.03885 

0.07265 

0.4638 

55.92144 

0.464 

0.045855 

0.937888 

0.043879 

0.146831 

1.193575 

71.18492 

0.479 

0.08498 

0.3438 

0.14363 

0.5406 

0.1424 

313.1727 

0.5406 

0.112529 

0.1839 

0.0795 

0.2279 

0.06851 

273.7041 

0.5035 

0.061862 

0.3239 

0.09805 

0.24274 

0.1261 

342.381 

0.5406 

0.082717 

0.1615 

0.07897 

0.23161 

0.07086 

256.3925 

0.5353 

0.060538 

0.09114 

0.052629 

0.15529 

0.03772 

245.1919 

0.52788 

0.042311 

0.1197 

0.0636 

0.17702 

0.0438 

280.8457 

0.50615 

0.050376 

0.2207 

0.11024 

0.30581 

0.09945 

342.5437 

0.583 

0.082305 

0.04381 

0.036729 

0.09169 

0.01699 

223.6858 

0.51463 

0.032351 

0.186056 

0.082918 

0.246582 

0.075729 

284.7397 

0.531457 

0.065624 


Appendix B West Branch Susquehanna Model Segments Results 


B43 





Segment 50 

<—-- 

FOR 


TP 


84 

0.064312 

85 

0.035056 

86 

0.047131 

87 

0.033808 

88 

0.022708 

89 

0.029689 

90 

0.048861 

91 

0.019656 

MEAN 

0.037653 

BOO 

84 

9.54 

85 

4.52 

86 

6.57 

87 

4.46 

88 

2.49 

89 

3.33 

90 

6.37 

91 

1.87 

MEAN 

4.89375 

SED 

84 

0.0845 

85 

0.03833 

86 

0.06327 

87 

0.03042 

88 

0.01439 

89 

0.02121 

90 

0.044 

91 

0.006788 

MEAN 

0.037863 


HTC 

-Pervious— — 

LTC PAS 

URB 

HAT 

-Impervious-> 

ANHL RES 

Total 

Load 

1.426 

1.357 

0.19113 

0.8246 

1.82 

548.0522 

1.0276 

0.229504 

0.9258 

0.7633 

0.12269 

0.3649 

1.186 

478.9821 

0.9575 

0.143548 

1.581 

1.544 

0.14074 

0.38674 

1.076 

599.1667 

1.0276 

0.176096 

1.063 

0.9987 

0.11675 

0.36661 

1.394 

448.6868 

1.0163 

0.151396 

0.9182 

1.002 

0.092309 

0.25729 

0.878 

429.0859 

1.00488 

0.116104 

1.117 

1.301 

0.10889 

0.29302 

1.935 

491.4799 

0.96115 

0.164555 

1.564 

1.548 

0.16629 

0.48981 

1.386 

599.4514 

1.11 

0.193885 

0.5249 

0.4751 

0.075579 

0.16434 

0.4808 

391.4501 

0.97863 

0.08348 

1.139987 

1.123637 

0.126797 

0.393414 

1.269475 

498.2944 

1.010457 

0.157321 

58.2 

27.57 

27.1 

102.0 

17.52 

5480.522 

30.6 

16.89773 

27.87 

14.79 

15.0 

43.0 

8.01 

4789.821 

28.5 

8.173622 

44.4 

22.8 

18.5 

45.8 

13.44 

5991.667 

30.6 

10.86275 

33.0 

15.72 

14.9 

43.7 

10.05 

4486.868 

30.3 

8.31835 

17.52 

9.900001 

9.929999 

29.3 

5.67 

4290.859 

29.88 

5.177204 

22.86 

13.56 

12.0 

33.4 

7.32 

4914.799 

28.65 

6.409463 

42.6 

20.85 

20.8 

57.7 

12.9 

5994.514 

33.0 

11.38318 

12.21 

7.710001 

6.93 

17.3 

3.81 

3914.501 

29.13 

3.689134 

32.3325 

16.6125 

15.645 

46.525 

9.84 

4982.944 

30.0825 

8.86393 

0.562 

0.323 

0.169 

0.331 

0.212 

0.0 

0.0 

0.116701 

0.31 

0.174 

0.0864 

0.117 

0.108 

0.0 

0.0 

0.053895 

0.517 

0.305 

0.111 

0.129 

0.185 

0.0 

0.0 

0.083833 

0.28 

0.156 

0.08769 

0.125 

0.11 

0.0 

0.0 

0.047332 

0.166 

0.09098 

0.0523 

0.07 

0.06538 

0.0 

0.0 

0.024959 

0.216 

0.125 

0.06406 

0.07983 

0.08007 

0.0 

0.0 

0.033528 

0.394 

0.213 

0.122 

0.161 

0.152 

0.0 

0.0 

0.066668 

0.106 

0.05584 

0.03199 

0.02731 

0.03998 

0.0 

0.0 

0.01304 

0.318875 

0.180353 

0.090555 

0.130018 

0.119054 

0.0 

0.0 

0.054995 


B44 


Appendix B West Branch Model Segments Results 





Segment 60 

--Pervious— ---Impervious-> 

FOR HTC LTC PAS URB HAY ANML RES 

NH3 

84 0.169 6.034 6.177 0.423 0.936 2.097 319.6273 1.25 

85 0.108 2.844 3.0 0.237 0.363 1.289 201.2485 1.18 

86 0.132 3.716 3.22 0.294 0.416 0.8043 264.0674 1.24 

87 0.109 3.476 3.601 0.248 0.359 1.44 207.7573 1.24 

88 0.09003 3.601 3.196 0.204 0.299 0.7594 173.1431 1.2 

89 0.131 5.903 6.783 0.283 0.399 1.254 227.356 1.14 

90 0.168 4.735 5.441 0.374 0.536 1.311 303.6626 1.36 

91 0.1 2.575 2.652 0.216 0.303 0.5172 181.9571 1.22 

1992 0.125879 4.1105 4.25875 0.284875 0.451375 1.183987 234.8524 1.22875 

N03 

84 2.3 26.38 28.56 9.01 13.3 16.71 79.90681 3.17 

85 1.79 10.98 10.91 6.15 8.28 13.18 50.31212 2.98 

86 2.09 16.62 17.69 7.32 9.85 15.2 66.01686 3.14 

87 1.54 19.06 20.01 6.08 8.18 16.66 51.93932 3.13 

88 1.43 20.27 20.02 5.21 6.95 13.44 43.28578 3.03 

89 1.72 23.66 25.33 7.03 9.469999 15.38 56.839 2.88 

90 2.47 22.05 25.36 9.33 12.6 18.11 75.91566 3.44 

91 1.77 10.12 10.65 5.95 7.84 11.17 45.48928 3.09 

1992 1.88875 18.6425 19.81625 7.01 9.55875 14.98125 58.7131 3.1075 

ORGN 

84 0.4823 4.04 2.959 2.45973 4.5633 1.169 1917.764 3.69887 

85 0.082362 0.7393 0.5149 0.56021 1.12413 0.1969 1207.491 3.48369 

86 0.152852 1.632 1.284 0.84959 1.21317 0.4248 1584.405 3.66919 

87 0.164724 0.9415 0.7087 0.78652 1.09816 0.2575 1246.544 3.65806 

88 0.067522 0.6128 0.354 0.55279 0.88669 0.171 1038.859 3.53563 

89 0.133931 1.079 0.7653 0.76055 1.13155 0.2899 1364.136 3.35755 

90 0.168063 1.174 0.8091 1.03138 1.58417 0.3275 1821.976 4.0068 

91 0.058247 0.3809 0.242 0.27825 0.74942 0.09019 1091.743 3.60612 

1992 0.16375 1.324937 0.954625 0.909877 1.543824 0.365849 1409.115 3.626989 

TN 

84 2.9513 36.45 37.7 11.89273 18.7993 19.97 2796.739 8.11887 

85 1.980362 14.56 14.43 6.94721 9.76713 14.67 1760.924 7.64369 

86 2.374852 21.97 22.2 8.46359 11.47917 16.43 2310.59 8.04919 

87 1.813724 23.48 24.32 7.11452 9.63716 18.36 1817.876 8.02806 

88 1.587552 24.48 23.57 5.96679 8.135691 14.38 1515.002 7.76563 

89 1.984931 30.64 32.88 8.07355 11.00055 16.92 1989.365 7.37755 

90 2.806063 27.96 31.61 10.73538 14.72017 19.75 2657.048 8.8068 

91 1.928247 13.07 13.54 6.44425 8.89242 11.78 1592.125 7.91612 

19922.178379 24.07625 25.03125 8.204752 11.55395 16.5325 2054.959 7.963239 


Total 

Load 

0.533528 

0.298197 

0.327376 

0.330697 

0.274339 

0.446773 

0.446966 

0.241486 

0.36242 


4.432473 

2.996803 

3.659616 

3.262924 

2.984159 

3.607898 

4.501629 

2.8471 

3.536575 


0.940571 

0.248632 

0.392563 

0.34341 

0.21503 

0.327932 

0.415902 

0.183973 

0.383502 


5.937519 

3.563503 

4.405554 

3.957523 

3.490815 

4.404635 

5.394281 

3.290278 

4.305514 


P04 


84 

0.01595 

0.9578 

1.087 

85 

0.007922 

0.458 

0.4868 

86 

0.01039 

0.8218 

0.7347 

87 

0.008528 

0.6409 

0.7258 

88 

0.006398 

0.8693 

0.9884 

89 

0.01028 

1.005 

1.288 

90 

0.01325 

0.9625 

1.122 

91 

0.00745 

0.3612 

0.3414 

1992 

0.010021 

0.759562 

0.846763 

ORGP 

84 

0.0689 

1.121 

0.7899 

85 

0.011766 

0.2048 

0.1372 

86 

0.021836 

0.4525 

0.3422 

87 

0.023532 

0.2614 

0.1893 

88 

0.009646 

0.1695 

0.09429 

89 

0.019133 

0.2995 

0.2046 

90 

0.024009 

0.3262 

0.2167 

91 

0.008321 

0.1057 

0.06459 

1992 0.023393 

0.367575 

0.254847 


0.05377 

0.347 

1.154 

79.90681 

0.03292 

0.09992 

0.4819 

50.31212 

0.04194 

0.113 

0.6509 

66.01686 

0.03345 

0.09852 

1.014 

51.93932 

0.02806 

0.08061 

0.4641 

43.28578 

0.04038 

0.107 

0.6723 

56.839 

0.05485 

0.148 

0.9972 

75.91566 

0.03303 

0.07596 

0.364 

45.48928 

0.0398 

0.133751 

0.7248 

58.7131 

0.35139 

0.6519 

0.3127 

319.6273 

0.08003 

0.16059 

0.05284 

201.2485 

0.12137 

0.17331 

0.1139 

264.0674 

0.11236 

0.15688 

0.06926 

207.7573 

0.07897 

0.12667 

0.04597 

173.1431 

0.10865 

0.16165 

0.07806 

227.356 

0.14734 

0.22631 

0.08863 

303.6626 

0.03975 

0.10706 

0.0242 

181.9571 

1.129983 

0.220546 

0.098195 

234.8524 


0.642 

0.602 

0.637 

0.637 

0.606 

0.586 

0.701 

0.627 

0.62975 


0.52841 

0.49767 

0.52417 

0.52258 

0.50509 

0.47965 

0.5724 

0.51516 

0.518141 


0.121818 

0.056721 

0.080485 

0.089855 

0.070528 

0.092803 

0.110129 

0.045981 

0.08354 


0.161933 

0.041742 

0.068362 

0.056697 

0.035842 

0.055388 

0.069291 

0.030114 

0.064921 


Appendix B West Branch Susquehanna Model Segments Results 


B45 





Segment 60 


< 






-Impervious-> 

Total 


FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Load 

TP 

84 

0.08485 

2.079 

1.877 

0.40516 

0.9989 

1.467 

559.3477 

1.17041 

0.294189 

85 

0.019688 

0.6627 

0.6239 

0.11295 

0.26051 

0.5348 

352.1848 

1.09967 

0.105022 

86 

0.032226 

1.274 

1.077 

0.16331 

0.28631 

0.7647 

462.118 

1.16117 

0.157444 

87 

0.03206 

0.9022 

0.9151 

0.14581 

0.2554 

1.083 

363.5752 

1.15958 

0.15331 

88 

0.016044 

1.039 

1.083 

0.10703 

0.20728 

0.5101 

303.0005 

1.11109 

0.112024 

89 

0.029413 

1.305 

1.493 

0.14903 

0.26865 

0.7503 

397.873 

1.06565 

0.155616 

90 

0.037259 

1.289 

1.339 

0.20219 

0.37431 

1.086 

531.4096 

1.2734 

0.189337 

91 

0.015771 

0.4669 

0.406 

0.07278 

0.18302 

0.3882 

318.425 

1.14216 

0.082026 

1992 

0.033414 

1.127225 

1.10175 

0.169783 

0.354298 

0.823012 

410.9917 

1.147891 

0.156121 

BOD 










84 

13.0 

120.6 

60.6 

66.3 

123.0 

37.5 

5593.477 

29.91 

22.18335 

85 

2.22 

21.81 

11.43 

15.1 

30.3 

6.45 

3521.848 

28.17 

4.475601 

86 

4.12 

44.4 

23.46 

22.9 

32.7 

12.27 

4621.18 

29.67 

7.564132 

87 

4.44 

33.3 

16.35 

21.2 

29.6 

9.450001 

3635.752 

29.58 

7.144822 

88 

1.82 

20.07 

9.150001 

14.9 

23.9 

6.06 

3030.005 

28.59 

3.911372 

89 

3.61 

33.3 

18.69 

20.5 

30.5 

10.53 

3978.73 

27.15 

6.514995 

90 

4.53 

37.8 

19.41 

27.8 

42.7 

11.55 

5314.096 

32.4 

8.132909 

91 

1.57 

13.11 

7.74 

7.5 

20.2 

3.81 

3184.25 

29.16 

2.988314 

1992 

4.41375 

40.54875 

20.85375 

24.525 

41.6125 

12.2025 

4109.917 

29.32875 

7.864437 

SED 










84 

0.142 

1.26 

0.745 

0.352 

0.515 

0.453 

0.0 

0.0 

0.20649 

85 

0.015 

0.238 

0.135 

0.07287 

0.1 

0.0847 

0.0 

0.0 

0.029289 

86 

0.03678 

0.515 

0.328 

0.113 

0.101 

0.174 

0.0 

0.0 

0.063073 

87 

0.03646 

0.302 

0.185 

0.107 

0.09673 

0.11 

0.0 

0.0 

0.052487 

88 

0.01226 

0.197 

0.09677 

0.07347 

0.07659 

0.0732 

0.0 

0.0 

0.024626 

89 

0.03033 

0.345 

0.199 

0.101 

0.09273 

0.124 

0.0 

0.0 

0.048779 

90 

0.03523 

0.382 

0.218 

0.136 

0.133 

0.144 

0.0 

0.0 

0.057391 

91 

0.007118 

0.128 

0.06996 

0.03046 

0.05294 

0.04398 

0.0 

0.0 

0.014369 

1992 0.039397 

0.420875 

0.247091 

0.123225 

0.145999 

0.15086 

0.0 

0.0 

0.062063 


B46 


Appendix B West Branch Model Segments Results 





Segment 70 


< 






c-Impervious-> 


FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANHL 

RES 

NH3 









84 

0.152 

2.672 

2.247 

0.367 

0.771 

3.122 

283.1689 

1.56 

85 

0.08754 

1.374 

1.145 

0.213 

0.29 

1.736 

184.868 

1.44 

86 

0.144 

3.91 

3.82 

0.326 

0.511 

0.8931 

293.6644 

1.59 

87 

0.108 

2.569 

2.391 

0.248 

0.359 

1.432 

210.5506 

1.53 

88 

0.102 

3.438 

3.095 

0.23 

0.362 

1.262 

219.7081 

1.48 

89 

0.131 

5.855 

5.894001 

0.294 

0.456 

1.306 

244.0348 

1.43 

90 

0.168 

5.673 

5.405 

0.378 

0.582 

1.063 

325.7292 

1.68 

91 

0.102 

2.468 

2.568 

0.231 

0.35 

0.529 

207.6036 

1.53 

MEAN 

0.124317 

3.494875 

3.320625 

0.285875 

0.460125 

1.417887 

246.166 

1.53 

N03 









84 

2.14 

22.25 

23.58 

8.92 

12.8 

14.68 

70.79224 

3.38 

85 

1.35 

10.95 

10.23 

5.58 

7.45 

11.73 

46.217 

3.13 

86 

2.26 

14.99 

15.83 

8.5 

11.5 

15.21 

73.41611 

3.43 

87 

1.64 

11.37 

10.83 

6.63 

8.860001 

15.57 

52.63766 

3.31 

88 

1.53 

15.69 

14.99 

5.98 

8.08 

14.19 

54.92704 

3.22 

89 

1.68 

20.96 

20.19 

7.49 

10.3 

16.41 

61.0087 

3.09 

90 

2.46 

18.55 

21.09 

9.74 

13.4 

17.32 

81.43231 

3.63 

91 

1.74 

6.142 

5.794 

6.1 

8.07 

11.54 

51.90089 

3.31 

MEAN 

1.85 

15.11275 

15.31675 

7.3675 

10.0575 

14.58125 

61.54149 

3.3125 

ORGN 









84 

0.313866 

3.527 

2.696 

1.20575 

3.32045 

1.261 

1699.014 

3.66177 

85 

0.149513 

1.368 

1.084 

0.39326 

0.69748 

0.2564 

1109.208 

3.39094 

86 

0.158788 

2.404 

1.865 

0.65667 

1.59159 

0.7061 

1761.987 

3.71 

87 

0.132076 

1.275 

0.995 

0.40439 

0.94976 

0.406 

1263.304 

3.58386 

88 

0.213696 

2.187 

1.7 

0.50085 

1.13897 

0.7219 

1318.249 

3.50595 

89 

0.210357 

2.456 

2.071 

0.61586 

1.39496 

0.7747 

1464.209 

3.35755 

90 

0.298655 

5.148 

4.399 

0.76055 

1.76596 

1.37 

1954.376 

3.9326 

91 

0.08533 

2.256 

1.21 

0.4823 

1.04993 

0.3499 

1245.622 

3.58386 

MEAN 

0.195285 

2.577625 

2.0025 

0.627454 

1.488637 

0.73075 

1476.996 

3.590816 

TN 

84 

2.605866 

28.45 

28.52 

10.49275 

16.89145 

19.06 

2477.728 

8.601769 

85 

1.587053 

13.69 

12.45 

6.18626 

8.43748 

13.73 

1617.595 

7.96094 

86 

2.562788 

21.3 

21.52 

9.48267 

13.60259 

16.81 

2569.564 

8.73 

87 

1.880076 

15.22 

14.22 

7.28239 

10.16876 

17.41 

1842.318 

8.42386 

88 

1.845696 

21.31 

19.78 

6.71085 

9.58097 

16.17 

1922.446 

8.20595 

89 

2.021357 

29.27 

28.16 

8.39986 

12.15096 

18.49 

2135.304 

7.87755 

90 

2.926655 

29.38 

30.89 

10.87855 

15.74796 

19.76 

2850.131 

9.242599 

91 

1.92733 

10.87 

9.572 

6.8133 

9.46993 

12.42 

1816.531 

8.42386 

MEAN 

2.169603 

21.18625 

20.639 

8.280829 

12.00626 

16.73125 

2153.952 

8.433315 


Total 

Load 

0.962024 
0.524268 
0.962871 
0.731313 
0.853334 
1.34761 
1.309123 
0.633173 
0.915464 


7.804791 

4.507773 

6.542383 

5.274784 

5.772937 

7.174272 

7.770036 

3.938724 

6.098213 


1.281311 

0.550559 

0.885516 

0.565397 

0.813681 

0.900521 

1.556311 

0.653895 

0.900899 


10.09768 

5.615155 

8.442646 

6.609804 

7.477424 

9.465674 

10.69436 

5.262978 

7.958215 


P04 

84 0.01226 

85 0.005878 

86 0.0106 

87 0.007488 

88 0.008067 

89 0.009985 

90 0.01352 

91 0.007084 
MEAN 0.00936 

ORGP 

84 0.044838 

85 0.021359 

86 0.022684 

87 0.018868 

88 0.030528 

89 0.030051 

90 0.042665 

91 0.01219 
MEAN 0.027898 


0.6557 

0.3627 

0.7798 

0.3829 

0.7067 

0.9842 

1.073 

0.3611 

0.663262 


0.9773 

0.3794 

0.6656 

0.3536 

0.6057 

0.6813 

1.43 

0.625 

0.714737 


0.6477 

0.4002 

0.8109 

0.3681 

0.8329 

1.23 

1.248 

0.3595 

0.737162 


0.7187 

0.2888 

0.4969 

0.2652 

0.4529 

0.5531 

1.177 

0.3226 

0.5344 


0.04888 

0.02725 

0.04616 

0.03421 

0.03204 

0.04069 

0.05422 

0.031 

0.039306 


0.17225 

0.05618 

0.09381 

0.05777 

0.07155 

0.08798 

0.10865 

0.0689 

0.089636 


0.261 

0.06652 

0.142 

0.08943 

0.101 

0.125 

0.16 

0.09348 

0.129804 


0.47435 

0.09964 

0.22737 

0.13568 

0.16271 

0.19928 

0.25228 

0.14999 

0.212662 


1.591 

0.7082 

0.7782 

0.8828 

0.7641 

0.9761 

1.293 

0.4152 

0.926075 


0.3386 

0.06889 

0.1903 

0.1096 

0.195 

0.2104 

0.3709 

0.09646 

0.197519 


70.79224 

46.217 

73.41611 

52.63766 

54.92704 

61.0087 

81.43231 

51.90089 

61.54149 


283.1689 

184.868 

293.6644 

210.5506 

219.7081 

244.0348 

325.7292 

207.6036 

246.166 


0.758 

0.698 

0.771 

0.744 

0.705 

0.694 

0.822 

0.742 

0.74175 


0.52311 

0.48442 

0.53 

0.51198 

0.50085 

0.47965 

0.5618 

0.51198 

0.512974 


0.318445 

0.162763 

0.25442 

0.18411 

0.240709 

0.324792 

0.376538 

0.131285 

0.249133 


0.279357 

0.114558 

0.192054 

0.117023 

0.176236 

0.197321 

0.36048 

0.144903 

0.197742 


Appendix B West Branch Susquehanna Model Segments Results 


B47 






Segment 70 





._ 


TP 

84 

FOR 

HTC 

LTC PAS 

URB 

NAY 

ANHL RES 

0.057098 

1.633 

1.366 

0.22113 

0.73535 

1.929 

495.5457 

1.28111 

85 

0.027237 

0.742 

0.689 

0.08343 

0.16616 

0.7771 

323.519 

1.18242 

86 

0.033284 

1.445 

1.308 

0.13997 

0.36937 

0.9684 

513.9128 

1.301 

87 

0.026356 

0.7365 

0.6333 

0.09198 

0.22511 

0.9924 

368.4636 

1.25598 

88 

0.038595 

1.312 

1.286 

0.10359 

0.26371 

0.9591 

384.4893 

1.20585 

89 

0.040036 

1.665 

1.783 

0.12867 

0.32428 

1.186 

427.0609 

1.17365 

90 

0.056185 

2.503 

2.425 

0.16287 

0.41228 

1.664 

570.0262 

1.3838 

91 

0.019274 

0.9862 

0.6821 

0.0999 

0.24347 

0.5117 

363.3063 

1.25398 

HEAN 

0.037258 

1.377838 

1.27155 

0.128942 

0.342466 

1.123462 

430.7904 

1.254724 

BOO 

84 

8.46 

50.7 

24.54 

32.5 

89.5 

21.48 

4955.457 

29.61 

85 

4.03 

18.51 

9.900001 

10.6 

18.8 

4.74 

3235.19 

27.42 

86 

4.28 

34.2 

17.58 

17.7 

42.9 

11.85 

5139.127 

30.0 

87 

3.56 

20.04 

10.41 

10.9 

25.6 

7.56 

3684.636 

28.98 

88 

5.76 

34.2 

16.56 

13.5 

30.7 

13.08 

3844.893 

28.35 

89 

5.67 

35.7 

19.35 

16.6 

37.6 

13.29 

4270.609 

27.15 

90 

8.05 

68.10001 

35.4 

20.5 

47.6 

21.15 

5700.262 

31.8 

91 

2.3 

29.13 

11.43 

13.0 

28.3 

6.360001 

3633.063 

28.98 

MEAN 

5.26375 

36.3225 

18.14625 

16.9125 

40.125 

12.43875 

4307.904 

29.03625 

SED 

84 

0.06655 

1.09 

0.671 

0.292 

0.383 

0.481 

0.0 

0.0 

85 

0.03544 

0.426 

0.271 

0.08692 

0.05537 

0.104 

0.0 

0.0 

86 

0.03074 

0.737 

0.466 

0.147 

0.152 

0.276 

0.0 

0.0 

87 

0.02651 

0.401 

0.249 

0.08636 

0.08047 

0.16 

0.0 

0.0 

88 

0.04449 

0.674 

0.422 

0.114 

0.11 

0.276 

0.0 

0.0 

89 

0.0464 

0.756 

0.509 

0.139 

0.133 

0.295 

0.0 

0.0 

90 

0.0612 

1.58 

1.08 

0.169 

0.165 

0.52 

0.0 

0.0 

91 

0.01399 

0.692 

0.304 

0.11 

0.09928 

0.139 

0.0 

0.0 

MEAN 

0.040665 

0.7945 

0.4965 

0.143035 

0.147265 

0.281375 

0.0 

0.0 


Total 

Load 

0.614371 

0.28819 

0.463716 

0.313523 

0.429846 

0.53636 

0.756195 

0.288419 

0.461327 


19.37352 

7.385696 

11.68361 

7.823766 

12.00268 

12.68912 

20.27514 

8.106542 

12.41751 


0.281652 

0.104239 

0.172154 

0.100801 

0.168165 

0.188353 

0.35321 

0.127188 

0.18697 


B48 


Appendix B West Branch Susquehanna Model Segments Results 





Appendix C 

Monocacy Model Segments 
Results 


Simulated and Observed Flow at Reach 750 
Frequency Analysis of Flow at Reach 750 
Comparison of Annual Total Observed and Simulated Flow Volume 
Simulated and Observed Sediment Concentration at Reach 750 
Simulated and Observed Water Temperature at Reach 750 
Simulated and Observed DO at Reach 750 
Simulated and Observed Nitrate-N Concentration at Reach 750 
Simulated and Observed Ammonia-N Concentration at Reach 750 
Simulated and Observed Organic-N Concentration at Reach 750 
Simulated and Observed Total-N Concentration at Reach 750 
Simulated and Observed P0 4 -P Concentration at Reach 750 
Simulated and Observed Organic-P Concentration at Reach 750 
Simulated and Observed Total-P Concentration at Reach 750 
Simulated and Observed TOC Concentration at Reach 750 
Simulated Chlorophyll A Concentration at Reach 750 
Simulated BOD Concentration at Reach 750 
Simulated Benthic Algae Concentration at Reach 750 
AGCHEM Summary for Monocacy Basin (Hi-Till), PERLND 752 
AGCHEM Summary for Monocacy Basin (Low-Till), PERLND 753 
AGCHEM Summary for Monocacy Basin (HAY), PERLND 756 

Simulated and Observed Flow at Reach 210 

Frequency Analysis of Flow at Reach 210 

Comparison of Annual Total Observed and Simulated Flow Volume 

Simulated Sediment Concentration at Reach 210 

Simulated Water Temperature at Reach 210 

Simulated DO at Reach 210 

Simulated Nitrate-N Concentration at Reach 210 

Simulated Ammonia-N Concentration at Reach 210 

Simulated Organic-N Concentration at Reach 210 

Simulated Total-N Concentration at Reach 210 

Simulated P0 4 -P Concentration at Reach 210 

Simulated Organic-P Concentration at Reach 210 

Simulated Total-P Concentration at Reach 210 


Appendix C 


Cl 





Simulated TOC Concentration at Reach 210 

Simulated Chlorophyll A Concentration at Reach 210 

Simulated BOD Concentration at Reach 210 

Simulated Benthic Algae Concentration at Reach 210 

AGCHEM Summary for Monocacy Basin (Hi-Till), PERLND 212 

AGCHEM Summary for Monocacy Basin (Low-Till), PERLND 213 

AGCHEM Summary for Monocacy Basin (HAY), PERLND 216 

Per Acre Load Contributed from Each Land Use in Monocacy Basin (lb/ac) 
Percent of Total Load Contributed from Each Land Use in Monocacy Basin 


C2 


Appendix C 




SJO N! MOU 


Appendix C Monocacy Model Segments Results 


1984 1985 




















SIMULATED 

OBSERVED 



MONOCACY RIVER AT BRIDGEPORT, MD 






CHESAPEAKE BAY WATERSHED HYDROLOGIC CALIBRATION 
COMPARISON OF ANNUAL TOTAL OBSERVED vs SIMULATED FLOW 

PHASE III 


MONOCACY RIVER AT BRIDGEPORT, MD (SEGMENT 750) 


YEAR 


OBSERVED" 


SIMULATED*" 



FLOW (in) 

FLOW (in) 

1984 

25.98 

26.79 

1985 

13.27 

16.19 

1986 

14.13 

14.41 

1987 

15.63 

10.55 

1988 

10.85 

9.43 

1989 

18.59 

17.26 

1990 

18.81 

17.42 

1991 

11.84 

11.03 

AN 

16.14 

15.39 


* - Observed Flow at Monocacy River at Bridgeport, MD 
** - Simulated Outflow from RCH 750 


Appendix C Monocacy Model Segments Results 


C5 



1 5000 




(sjo)mou 


Von NI 0NOD 03S 


<o 


C6 


Appendix C Monocacy Model Segments Results 





SIM WTEMP 
OBS WTEMP 



Appendix C Monocacy Model Segments Results 


C7 


MONOCACY RIVER AT BRIDGEPORT, MD 




OBS 00 



c? oo <o 

OJ •»— -r- 


CSJ o co <0 Cxi 

Van n i oo 


C8 


Appendix C Monocacy Model Segments Results 












AT BRIDGEPORT, MD 


































1 5000 



Appendix C Monocacy Model Segments Results 


1984 1985 1986 1987 1988 1989 

SIMULATED AND OBSERVED ORGANIC N AT REACH 750 
MONOCACY RIVER AT BRIDGEPORT, MD 










































1 5000 



CD O O <0 Csj CO O <0 Cxi OO -tf- CD 

CD •»— 

un 


(SJ3 )M01J l/OH NI ONOD N 1V101 


C12 


Appendix C Mon oca cy Model Segments Results 













1 5000 



o> 

<7> 


cr> 

C7> 


lO 

o> r^ 

CO 

cn 3= 
O 
-c 


CO 


I 


C» O 

>r- O CL 
CL LU 

cs> 


>■ QC 
ca CD 
LU 

cn *— 

CO 03 -C 

<y> o 

t- or 

CO LU 

z >- 
•< — 
Qi 
O 

LU >- 
t— CJ> 
*»-<■«« 
03 _i O 

c» o o 


— O 
CO 3 


lO 

DO 

o-> 


o 

tn 

r^. 



o 

OJ 


a 

cn 


o 

co 


<3> 

ro 

<=> 


o 


(SJO)M01J 


l/9R NI 0N00 d-tOd 


Appendix C Monocacy Model Segments Results 


C13 


































1 5000 



Appendix C Monocacy Model Segments Results 


C15 


SIMULATED AND OBSERVED TOTAL P AT REACH 750 
MONOCACY RIVER AT BRIDGEPORT, MO 












Appendix C Monocacy Model Segments Results 


C17 




05 

05 



Appendix C Monocacy Model Segments Results 


















,500 



Appendix C Monocacy Model Segments Results 


1984 1985 

























AGCHEM RESULTS FOR MONOCACY CHI-TILL), SEGMENT 752 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

51.29 

43.81 

41.32 

36.42 

43.21 

Runoff (in) 

Surface 

13.81 

6.576 

6.166 

3.858 

7.603 

Interflow 

7.138 

6.091 

5.296 

3.913 

5.609 

Baseflow 

7.376 

5.459 

4.960 

4.424 

5.555 

Total 

28.32 

18.13 

16.42 

12.20 

18.77 

Sediment Loss (t/a) 

1.580 

0.4100 

0.5030 

0.2150 

0.6770 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.7088 

0.2970 

0.7321 

0.2428 

0.4952 

Interflow 

6.072 

4.282 

5.921 

3.063 

4.834 

Baseflow 

2.607 

2.291 

2.914 

1.778 

2.398 

Total 

9.388 

6.870 

9.567 

5.084 

7.727 

NH3 Loss 

Surface 

1.253 

0.3140 

1.058 

0.3585 

0.7459 

Interflow 

0.8140 

1.708 

2.373 

1.190 

1.521 

Baseflow 

0.5771E-01 

0.3182E-01 

0.2511E-01 

0.1979E-01 

0.3361E-01 

Sediment 

0.1763E-01 

0.4260E-02 

0.6639E-02 

0.2295E-02 

0.7706E-02 

Total 

2.143 

2.058 

3.462 

1.570 

2.308 

ORGN Sediment 

5.210 

1.362 

1.673 

0.7046 

2.237 

Total N Loss (Ib/a) 

16.74 

10.29 

14.70 

7.359 

12.27 

P04 Loss 

Surface 

0.5389 

0.3601 

0.3751 

0.2952 

0.3923 

Interflow 

0.5132 

0.6885 

0.5537 

0.3798 

0.5338 

Baseflow 

0.3594E-02 

0.1055E-03 

0.1034E-03 

0.8366E-04 

0.9716E-03 

Sediment 

0.6666E-01 

0.1782E-01 

0.2230E-01 

0.9416E-02 

0.2905E-01 

Total 

1.122 

1.066 

0.9512 

0.6846 

0.9560 

ORGP Sediment 

1.445 

0.3773 

0.4638 

0.1955 

0.6204 

Total P Loss (Ib/a) 

2.567 

1.444 

1.415 

0.8801 

1.577 

Atm Depn. N03 (Ib/a) 

7.739 

6.932 

6.840 

6.777 

7.072 

Atm Depn. NH4 (Ib/a) 

2.434 

1.971 

1.875 

1.871 

2.038 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

82.38 

84.25 

84.44 

84.25 

83.83 

Nitrate appln.(lb/a) 

23.66 

24.28 

24.35 

24.29 

24.15 

ORGN appln.(lb/a) 

14.82 

14.82 

14.82 

14.82 

14.82 

Total N appln.(lb/a) 

120.9 

123.4 

123.6 

123.4 

122.8 

P04-p appln.(lb/a) 

30.50 

30.10 

30.50 

30.12 

30.31 

ORGP appln.(lb/a) 

3.720 

3.720 

3.720 

3.720 

3.720 

Total P appln.(lb/a) 

34.22 

33.83 

34.22 

33.84 

34.03 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1600E-01 

0.8000E-02 

0.6000E-02 

0.1300E-01 

0.1075E-01 

Upper 

65.71 

61.67 

56.43 

69.19 

63.25 

Lower 

30.28 

44.02 

44.03 

43.28 

40.40 

Total 

96.00 

105.7 

100.5 

112.5 

103.7 

Phosphorus 

Surface 

0.1700E-01 

0.1000E-01 

0.7000E-02 

0.1300E-01 

0.1175E-01 

Upper 

21.34 

22.56 

23.33 

22.51 

22.44 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

24.15 

25.37 

26.14 

25.33 

25.25 

Deficit (Ib/a) 

Nit'rogen 

Surface 

1.385 

1.393 

1.394 

1.388 

1.390 

Upper 

29.26 

33.34 

38.56 

25.80 

31.74 

Lower 

13.87 

0.0000 

0.0000 

0.7628 

3.658 

Total 

44.52 

34.73 

39.96 

27.95 

36.79 

Phosphorus 

Surface 

1.384 

1.391 

1.394 

1.388 

1.389 

Upper 

2.503 

1.258 

0.4931 

1.316 

1.393 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.887 

2.649 

1.887 

2.704 

2.782 

Other Fluxes-Ib/ac 

N Mineralization 

11.39 

17.20 

17.68 

17.71 

16.00 

P Mineralization 

3.369 

3.401 

3.191 

3.335 

3.324 

Denitrification 

0.4882 

1.479 

2.403 

1.128 

1.375 

N Immobilization 

16.43 

17.45 

17.78 

17.24 

17.23 

P Immobilization 

7.382 

7.332 

6.536 

7.314 

7.141 


C20 


Appendix C Monocacy Model Segments Results 



AGCHEM RESULTS FOR HONOCACY (HI-TILL), SEGMENT 752 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

33.14 

43.14 

47.51 

35.54 

39.83 

Runoff (in) 

Surface 

3.488 

7.489 

7.742 

4.250 

5.742 

Interflow 

3.480 

5.627 

6.041 

3.603 

4.688 

Baseflow 

3.747 

5.729 

5.450 

4.078 

4.751 

Total 

10.72 

18.84 

19.23 

11.93 

15.18 

Sediment Loss (t/a) 

0.2520 

0.7540 

0.8790 

0.8490 

0.6835 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2096 

0.6335 

0.3276 

0.1863 

0.3393 

Interflow 

7.833 

12.88 

5.870 

1.849 

7.108 

Baseflow 

1.446 

1.851 

2.198 

0.8826 

1.594 

Total 

9.488 

15.36 

8.396 

2.918 

9.040 

NH3 Loss 

Surface 

0.3251 

2.126 

0.7119 

0.4568 

0.9049 

Interflow 

1.501 

2.371 

1.788 

0.7545 

1.604 

Baseflow 

0.1550E-01 

0.2147E-01 

0.1820E-01 

0.1248E-01 

0.1691E-01 

Sediment 

0.2763E-02 

0.8719E-02 

0.9741E-02 

0.9956E-02 

0.7795E-02 

Total 

1.844 

4.527 

2.528 

1.234 

2.533 

ORGN Sediment 

0.8249 

2.515 

2.958 

2.873 

2.293 

Total N Loss (Ib/a) 

12.16 

22.41 

13.88 

7.025 

13.87 

P04 Loss 

Surface 

0.4544 

0.7169 

0.7914 

0.3300 

0.5732 

Interflow 

0.6905 

0.8664 

0.7867 

0.2653 

0.6522 

Baseflow 

0.6930E-04 

0.1100E-03 

0.1040E-03 

0.6221E-04 

0.8638E-04 

Sediment 

0.1233E-01 

0.3444E-01 

0.4175E-01 

0.3930E-01 

0.3196E-01 

Total 

1.157 

1.618 

1.620 

0.6347 

1.257 

ORGP Sediment 

0.2284 

0.6964 

0.8206 

0.7986 

0.6360 

Total P Loss (Ib/a) 

1.386 

2.314 

2.441 

1.433 

1.893 

Atm Depn. N03 (Ib/a) 

6.527 

7.305 

7.390 

6.621 

6.961 

Atm Depn. NH4 (Ib/a) 

1.767 

2.315 

2.235 

1.752 

2.017 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

82.43 

84.30 

83.55 

82.49 

83.19 

Nitrate appln.(lb/a) 

23.68 

24.30 

24.05 

23.70 

23.94 

ORGN appln.(lb/a) 

14.82 

14.82 

14.82 

14.82 

14.82 

Total N appln.(lb/a) 

120.9 

123.4 

122.4 

121.0 

121.9 

P04-p appln.(lb/a) 

30.50 

30.22 

30.02 

29.57 

30.08 

ORGP appln.(lb/a) 

3.720 

3.720 

3.720 

3.720 

3.720 

Total P appln.(lb/a) 

34.22 

33.94 

33.74 

33.30 

33.80 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.8000E-02 

0.1900E-01 

0.2100E-01 

0.1000E-01 

0.1450E-01 

Upper 

58.83 

56.23 

60.50 

64.47 

60.01 

Lower 

41.66 

38.16 

44.04 

44.03 

41.97 

Total 

100.5 

94.41 

104.6 

108.5 

102.0 

Phosphorus 

Surface 

0.8000E-02 

0.2000E-01 

0.1900E-01 

0.1200E-01 

0.1475E-01 

Upper 

23.10 

21.12 

22.26 

23.71 

22.55 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

25.91 

23.94 

25.08 

26.53 

25.36 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.393 

1.382 

1.379 

1.390 

1.386 

Upper 

36.15 

38.75 

34.48 

30.54 

34.98 

Lower 

2.380 

5.879 

0.0000 

0.0000 

2.065 

Total 

39.92 

46.01 

35.86 

31.93 

38.43 

Phosphorus 

Surface 

1.393 

1.381 

1.381 

1.389 

1.386 

Upper 

0.7296 

2.703 

1.561 

0.9997E-01 

1.273 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.123 

4.084 

2.943 

1.489 

2.660 

Other Fluxes-Ib/ac 

N Mineralization 

16.36 

14.49 

17.02 

16.82 

16.17 

P Mineralization 

3.238 

3.313 

3.461 

3.266 

3.319 

Denitrification 

1.111 

0.9720 

1.260 

0.6708 

1.003 

N Immobilization 

17.66 

17.38 

17.76 

17.39 

17.55 

P Immobilization 

6.513 

9.044 

7.789 

4.804 

7.037 


Appendix C Monocacy Model Segments Results 


C21 



AGCHEM RESULTS FOR MONOCACY (LOU-TILL), SEGMENT 753 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

51.29 

43.81 

41.32 

36.42 

43.21 

Runoff (in) 

Surface 

12.30 

5.171 

4.758 

2.429 

6.165 

Interflow 

7.066 

6.069 

5.112 

3.585 

5.458 

Baseflow 

7.924 

5.826 

5.340 

4.801 

5.973 

Total 

27.29 

17.07 

15.21 

10.82 

17.60 

Sediment Loss (t/a) 

0.7950 

0.1880 

0.2040 

0.8113E-01 

0.3170 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.5735 

0.2150 

0.4224 

0.1391 

0.3375 

Interflow 

7.786 

5.197 

4.376 

2.794 

5.038 

Baseflow 

2.585 

1.819 

1.475 

0.8033 

1.671 

Total 

10.94 

7.231 

6.273 

3.737 

7.045 

NH3 Loss 

Surface 

1.126 

0.2392 

0.7134 

0.2641 

0.5857 

Interflow 

0.7194 

1.424 

1.843 

0.8689 

1.214 

Baseflow 

0.6094E-01 

0.3249E-01 

0.2554E-01 

0.2020E-01 

0.3479E-01 

Sediment 

0.8813E-02 

0.1889E-02 

0.2266E-02 

0.7938E-03 

0.3440E-02 

Total 

1.915 

1.698 

2.584 

1.154 

1.838 

ORGN Sediment 

3.278 

0.7620 

0.8339 

0.3179 

1.298 

Total N Loss (Ib/a) 

16.14 

9.691 

9.691 

5.209 

10.18 

P04 Loss 

Surface 

0.6201 

0.3529 

0.3944 

0.2673 

0.4087 

Interflow 

0.5264 

0.3647 

0.2850 

0.1995 

0.3439 

Baseflow 

0.3622E-02 

0.9870E-04 

0.8703E-04 

0.6173E-04 

0.9674E-03 

Sediment 

0.3354E-01 

0.7960E-02 

0.8783E-02 

0.3363E-02 

0.1341E-01 

Total 

1.184 

0.7256 

0.6883 

0.4702 

0.7670 

ORGP Sediment 

0.8733 

0.2030 

0.2224 

0.8488E-01 

0.3459 

Total P Loss (Ib/a) 

2.057 

0.9286 

0.9107 

0.5550 

1.113 

Atm Depn. N03 (Ib/a) 

7.739 

6.932 

6.840 

6.777 

7.072 

Atm Depn. NH4 (Ib/a) 

2.434 

1.971 

1.875 

1.871 

2.038 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

90.66 

92.02 

92.32 

92.03 

91.76 

Nitrate appln.(lb/a) 

26.51 

26.97 

27.07 

26.97 

26.88 

ORGN appln.(lb/a) 

14.64 

14.64 

14.64 

14.64 

14.64 

Total N appln.(lb/a) 

131.8 

133.6 

134.0 

133.6 

133.3 

P04-p appln.(lb/a) 

32.08 

31.47 

32.08 

31.49 

31.78 

ORGP appln.(lb/a) 

3.660 

3.660 

3.660 

3.660 

3.660 

Total P appln.(lb/a) 

35.74 

35.13 

35.74 

35.15 

35.44 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.3700E-01 

0.2200E-01 

0.1100E-01 

0.2100E-01 

0.2275E-01 

Upper 

72.09 

67.10 

67.20 

78.64 

71.26 

Lower 

30.88 

45.17 

45.77 

36.78 

39.65 

Total 

103.0 

112.3 

113.0 

115.4 

110.9 

Phosphorus 

Surface 

0.3100E-01 

0.2000E-01 

0.1000E-01 

0.2200E-01 

0.2075E-01 

Upper 

21.53 

22.46 

23.38 

22.54 

22.48 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

24.37 

25.28 

26.19 

25.36 

25.30 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.515 

1.528 

1.539 

1.529 

1.528 

Upper 

33.06 

38.06 

37.97 

26.53 

33.90 

Lower 

17.96 

3.610 

3.009 

11.95 

9.132 

Total 

52.54 

43.20 

42.51 

40.01 

44.56 

Phosphorus 

Surface 

1.370 

1.380 

1.390 

1.379 

1.380 

Upper 

2.287 

1.372 

0.4359 

1.276 

1.343 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.657 

2.752 

1.826 

2.655 

2.722 

Other Fluxes-Ib/ac 

N Mineralization 

11.10 

14.18 

15.20 

13.32 

13.45 

P Mineralization 

3.769 

3.635 

3.526 

3.538 

3.617 

Denitrification 

0.4637 

1.251 

1.538 

0.6172 

0.9675 

N Immobilization 

18.78 

19.58 

20.22 

19.60 

19.55 

P Immobilization 

11.82 

9.740 

9.164 

10.00 

10.18 


C22 


Appendix C Monocacy Model Segments Results 



AGCHEM RESULTS FOR MONOCACY CLOW-TILL), SEGMENT 753 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

Runoff (in) 

33.14 

43.14 

47.51 

35.54 

39.83 

Surface 

2.648 

5.992 

6.352 

3.267 

4.565 

Interflow 

3.397 

5.544 

5.800 

3.441 

4.545 

Baseflow 

3.893 

6.166 

5.836 

4.337 

5.058 

Total 

9.938 

17.70 

17.99 

11.05 

14.17 

Sediment Loss (t/a) 

0.1130 

0.3540 

0.4060 

0.3720 

0.3113 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.1754 

0.4723 

0.3152 

0.1266 

0.2724 

Interflow 

10.24 

14.52 

7.172 

0.9132 

8.211 

Baseflow 

1.622 

1.789 

2.174 

0.4732 

1.515 

Total 

12.03 

16.79 

9.661 

1.513 

9.999 

NH3 Loss 

Surface 

0.4784 

1.611 

0.7121 

0.3794 

0.7952 

Interflow 

1.352 

2.135 

1.603 

0.6516 

1.435 

Baseflow 

0.1500E-01 

0.2141E-01 

0.1770E-01 

0.1204E-01 

0.1654E-01 

Sediment 

0.1225E-02 

0.4066E-02 

0.4478E-02 

0.4251E-02 

0.3505E-02 

Total 

1.846 

3.772 

2.337 

1.047 

2.250 

ORGN Sediment 

0.4472 

1.445 

1.689 

1.564 

1.286 

Total N Loss (Ib/a) 

14.33 

22.00 

13.69 

4.125 

13.54 

P04 Loss 

Surface 

0.7032 

0.8938 

0.9163 

0.3152 

0.7071 

Interflow 

0.6922 

0.8127 

0.5521 

0.1360 

0.5483 

Baseflow 

0.4490E-04 

0.6669E-04 

0.5455E-04 

0.2724E-04 

0.4834E-04 

Sediment 

0.5765E-02 

0.1617E-01 

0.1914E-01 

0.1721E-01 

0.1457E-01 

Total 

1.401 

1.723 

1.488 

0.4684 

1.270 

ORGP Sediment 

0.1194 

0.3855 

0.4518 

0.4194 

0.3440 

Total P Loss (Ib/a) 

1.521 

2.108 

1.939 

0.8878 

1.614 

Atm Depn. N03 (Ib/a) 

6.527 

7.305 

7.390 

6.621 

6.961 

Atm Depn. NH4 (Ib/a) 

1.767 

2.315 

2.235 

1.752 

2.017 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

89.89 

92.11 

91.24 

90.12 

90.84 

Nitrate appln.(lb/a) 

26.26 

27.00 

26.71 

26.34 

26.58 

ORGN appln.(lb/a) 

14.64 

14.64 

14.64 

14.64 

14.64 

Total N appln.(lb/a) 

130.8 

133.7 

132.6 

131.1 

132.1 

P04-p appln.(lb/a) 

32.08 

31.65 

31.50 

30.96 

31.55 

ORGP appln.(lb/a) 

3.660 

3.660 

3.660 

3.660 

3.660 

Total P appln.(lb/a) 

35.74 

35.31 

35.16 

34.62 

35.21 

Plant Uptake (lb/a) 

Nitrogen 

Surface 

0.1500E-01 

0.4100E-01 

0.3100E-01 

0.1300E-01 

0.2500E-01 

Upper 

62.41 

61.90 

65.52 

80.89 

67.68 

Lower 

42.85 

38.95 

44.06 

34.53 

40.10 

Total 

105.3 

100.9 

109.6 

115.4 

107.8 

Phosphorus 

Surface 

0.1300E-01 

0.3400E-01 

0.2400E-01 

0.1300E-01 

0.2100E-01 

Upper 

22.95 

20.45 

21.54 

23.72 

22.16 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

25.77 

23.28 

24.36 

26.53 

24.99 

Deficit (lb/a) 

Nitrogen 

Surface 

1.536 

1.510 

1.520 

1.538 

1.526 

Upper 

42.74 

43.26 

39.64 

24.27 

37.48 

Lower 

5.936 

9.843 

4.741 

14.20 

8.680 

Total 

50.22 

54.62 

45.90 

40.01 

47.69 

Phosphorus 

Surface 

1.388 

1.366 

1.376 

1.388 

1.380 

Upper 

0.8720 

3.375 

2.288 

0.9997E-01 

1.659 

. Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.260 

4.742 

3.664 

1.488 

3.038 

Other Fluxes-Ib/ac 

N Mineralization 

15.44 

13.29 

14.64 

13.04 

14.10 

P Mineralization 

3.349 

3.586 

3.655 

3.581 

3.543 

Denitrification 

1.094 

0.8500 

1.195 

0.2743 

0.8533 

N Immobilization 

19.58 

19.64 

20.01 

19.28 

19.63 

P Immobilization 

8.305 

11.19 

10.21 

5.941 

8.911 


Appendix C Monocacy Model Segments Results 


C23 



AGCHEM RESULTS FOR MONOCACY (HAY), SEGMENT 756 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

51.29 

43.81 

41.32 

36.42 

43.21 

Runoff (in) 

Surface 

14.16 

6.342 

5.359 

3.154 

7.254 

Interflow 

4.439 

3.643 

3.158 

2.122 

3.340 

Baseflow 

7.616 

5.318 

5.038 

4.517 

5.622 

Total 

26.22 

15.30 

13.56 

9.792 

16.22 

Sediment Loss (t/a) 

0.5890 

0.1720 

0.1460 

0.7267E-01 

0.2449 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.7388 

0.2910 

0.2948 

0.1867 

0.3778 

Interflow 

0.8894 

0.4733 

0.5627 

0.2904 

0.5540 

Baseflow 

3.134 

1.884 

2.609 

2.412 

2.510 

Total 

4.763 

2.649 

3.466 

2.889 

3.442 

NH3 Loss 

Surface 

0.6834 

0.1897 

0.2042 

0.2439 

0.3303 

Interflow 

0.3971E-01 

0.7971E-01 

0.7952E-01 

0.5358E-01 

0.6313E-01 

Baseflow 

0.5954E-01 

0.3052E-01 

0.2419E-01 

0.1872E-01 

0.3324E-01 

Sediment 

0.6387E-02 

0.1699E-02 

0.1446E-02 

0.7073E-03 

0.2560E-02 

Total 

0.7890 

0.3016 

0.3093 

0.3169 

0.4292 

ORGN Sediment 

1.612 

0.4597 

0.3873 

0.1860 

0.6612 

Total N Loss (Ib/a) 

7.163 

3.410 

4.163 

3.392 

4.532 

P04 Loss 

Surface 

1.085 

0.3883 

0.4430 

0.2713 

0.5469 

Interflow 

0.1690 

0.2596E-01 

0.2827E-01 

0.2725E-01 

0.6262E-01 

Baseflow 

0.3624E-02 

0.9229E-04 

0.8669E-04 

0.6506E-04 

0.9670E-03 

Sediment 

0.2610E-01 

0.7340E-02 

0.6151E-02 

0.2948E-02 

0.1063E-01 

Total 

1.284 

0.4217 

0.4775 

0.3016 

0.6212 

ORGP Sediment 

0.4336 

0.1243 

0.1054 

0.5049E-01 

0.1784 

Total P Loss (Ib/a) 

1.717 

0.5460 

0.5829 

0.3521 

0.7995 

Atm Depn. N03 (Ib/a) 

7.739 

6.932 

6.840 

6.777 

7.072 

Atm Depn. NH4 (Ib/a) 

2.434 

1.971 

1.875 

1.871 

2.038 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

7.380 

7.380 

7.380 

7.380 

7.380 

Nitrate appln.(lb/a) 

0.3900 

0.3900 

0.3900 

0.3900 

0.3900 

ORGN appln.(lb/a) 

8.160 

8.160 

8.160 

8.160 

8.160 

Total N appln.(lb/a) 

15.93 

15.93 

15.93 

15.93 

15.93 

P04-p appln.(lb/a) 

13.87 

13.87 

13.87 

13.87 

13.87 

ORGP appln.(lb/a) 

2.160 

2.160 

2.160 

2.160 

2.160 

Total P appln.(lb/a) 

16.03 

16.03 

16.03 

16.03 

16.03 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.8000E-02 

0.4000E-02 

0.3000E-02 

0.4000E-02 

0.4750E-02 

Upper 

12.03 

12.28 

12.16 

13.24 

12.43 

Lower 

12.19 

12.58 

12.58 

12.58 

12.48 

Total 

24.22 

24.86 

24.74 

25.82 

24.91 

Phosphorus 

Surface 

0.1800E-01 

0.9000E-02 

0.7000E-02 

0.1100E-01 

0.1125E-01 

Upper 

13.90 

13.06 

11.68 

12.57 

12.80 

Lower 

2.002 

2.001 

2.001 

2.001 

2.001 

Total 

15.91 

15.07 

13.69 

14.58 

14.81 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.3926 

0.3963 

0.3972 

0.3959 

0.3955 

Upper 

15.11 

14.86 

14.98 

13.89 

14.71 

Lower 

0.3947 

0.0000 

0.0000 

0.0000 

0.9867E-01 

Total 

15.89 

15.25 

15.38 

14.29 

15.20 

Phosphorus 

Surface 

0.9828 

0.9918 

0.9938 

0.9898 

0.9895 

Upper 

3.121 

3.955 

5.328 

4.439 

4.211 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

4.103 

4.947 

6.321 

5.429 

5.200 

Other Fluxes-Ib/ac 

N Mineralization 

16.39 

17.20 

17.17 

17.30 

17.02 

P Mineralization 

3.016 

2.779 

2.525 

2.560 

2.720 

Denitrification 

0.6809 

0.9829 

1.385 

1.418 

1.117 

N Immobilization 

2.662 

3.308 

3.299 

3.231 

3.125 

P Immobilization 

3.515 

1.977 

2.598 

1.949 

2.510 


C24 


Appendix C Monocacy Model Segments Results 



AGCHEM RESULTS FOR MONOCACY (HAY), SEGMENT 756 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

33.14 

43.14 

47.51 

35.54 

39.83 

Runoff (in) 

Surface 

2.967 

7.344 

7.562 

3.891 

5.441 

Interflow 

1.955 

3.344 

3.640 

2.106 

2.761 

Baseflow 

3.684 

5.834 

5.528 

4.190 

4.809 

Total 

8.607 

16.52 

16.73 

10.19 

13.01 

Sediment Loss (t/a) 

0.8551E-01 

0.2860 

0.3280 

0.2490 

0.2371 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.1838 

0.3141 

0.2416 

0.1633 

0.2257 

Interflow 

0.3382 

0.3214 

0.5300 

0.3375 

0.3818 

Baseflow 

2.291 

3.303 

2.625 

1.995 

2.553 

Total 

2.813 

3.938 

3.396 

2.496 

3.161 

NH3 Loss 

Surface 

0.1614 

0.5172 

0.2369 

0.1852 

0.2752 

Interflow 

0.5855E-01 

0.7081E-01 

0.6651E-01 

0.5199E-01 

0.6197E-01 

Baseflow 

0.1369E-01 

0.1924E-01 

0.1607E-01 

0.1119E-01 

0.1505E-01 

Sediment 

0.8662E-03 

0.3068E-02 

0.3450E-02 

0.2674E-02 

0.2515E-02 

Total 

0.2345 

0.6103 

0.3229 

0.2511 

0.3547 

ORGN Sediment 

0.2211 

0.7726 

0.9073 

0.6968 

0.6495 

Total N Loss (Ib/a) 

3.268 

5.321 

4.626 

3.444 

4.165 

P04 Loss 

Surface 

0.1728 

1.165 

0.3271 

0.3393 

0.5010 

Interflow 

0.1155E-01 

0.3861E-01 

0.3430E-01 

0.2094E-01 

0.2635E-01 

Baseflow 

0.4727E-04 

0.7058E-04 

0.5712E-04 

0.3166E-04 

0.5166E-04 

Sediment 

0.3547E-02 

0.1390E-01 

0.1394E-01 

0.1131E-01 

0.1067E-01 

Total 

0.1880 

1.217 

0.3754 

0.3716 

0.5380 

ORGP Sediment 

0.5919E-01 

0.2082 

0.2479 

0.1921 

0.1768 

Total P Loss (Ib/a) 

0.2472 

1.426 

0.6233 

0.5637 

0.7150 

Atm Depn. N03 (Ib/a) 

6.527 

7.305 

7.390 

6.621 

6.961 

Atm Depn. NH4 (lb/a) 

1.767 

2.315 

2.235 

1.752 

2.017 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

7.380 

7.380 

7.380 

7.370 

7.378 

Nitrate appln.(lb/a) 

0.3900 

0.3900 

0.3900 

0.3860 

0.3890 

ORGN appln.(lb/a) 

8.160 

8.160 

8.160 

8.160 

8.160 

Total N appln.(lb/a) 

15.93 

15.93 

15.93 

15.92 

15.93 

P04-p appln.(lb/a) 

13.87 

13.87 

13.87 

13.77 

13.84 

ORGP appln.(lb/a) 

2.160 

2.160 

2.160 

2.160 

2.160 

Total P appln.(lb/a) 

Plant Uptake (lb/a) 

16.03 

16.03 

16.03 

15.93 

16.00 

Nitrogen 

Surface 

0.4000E-02 

0.1000E-01 

0.5000E-02 

0.3000E-02 

0.5500E-02 

Upper 

12.87 

14.02 

13.90 

12.43 

13.30 

Lower 

12.58 

12.58 

12.58 

12.58 

12.58 

Total 

25.46 

26.60 

26.48 

25.01 

25.89 

Phosphorus 

Surface 

0.8000E-02 

0.2100E-01 

0.1000E-01 

0.7000E-02 

0.1150E-01 

Upper 

12.66 

12.15 

12.19 

11.06 

12.01 

Lower 

2.002 

2.001 

2.001 

2.001 

2.001 

Total 

14.67 

14.17 

14.20 

13.06 

14.03 

Deficit (lb/a) 

Nitrogen 

Surface 

0.3966 

0.3907 

0.3954 

0.3973 

0.3950 

Upper 

14.26 

13.12 

13.24 

14.71 

13.83 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

14.66 

13.51 

13.64 

15.11 

14.23 

Phosphorus 

Surface 

0.9927 

0.9795 

0.9902 

0.9931 

0.9889 

Upper 

4.353 

4.864 

4.819 

5.953 

4.997 

Lower 

0.0000 

0.0000 

0.0000 • 

0.0000 

0.0000 

Total 

5.346 

5.843 

5.809 

6.946 

5.986 

Other Fluxes-Ib/ac 

N Mineralization 

17.89 

17.44 

17.52 

17.30 

17.54 

P Mineralization 

2.566 

2.658 

2.679 

2.444 

2.587 

Denitrification 

1.493 

1.399 

1.268 

1.356 

1.379 

N Inmobilization 

3.489 

3.369 

3.443 

3.354 

3.414 

P Inmobilization 

1.940 

1.914 

2.546 

3.001 

2.350 


Appendix C Monocacy Model Segments Results 


C25 




ULATEO AND OBSERVED FLOW AT REACH 
OCACY RIVER AT JUG BRIDGE NEAR FR 



















SJO NI MOTJ 


Appendix C Monocacy Model Segments Results 








CHESAPEAKE BAY WATERSHED HYDROLOGIC CALIBRATION 
COMPARISON OF ANNUAL TOTAL OBSERVED vs SIMULATED FLOW 

PHASE III 



* - Observed Flow at Monocacy River at Jug Bridge near Frederick, MD 
** - Simulated Outflow from RCH 210 


C28 


Appendix C Monocacy Model Segments Results 



00001 



O CD o o o o a O O O o CD o 

CD cz> m cd m cd ir> o mom 

CD 10 ro cvj cd OT co ro -r— 


(SJO) MOTJ 1/0H Nl ONOO Q3S 


Appendix C Monocacy Model Segments Results 


C29 


1984 1985 1986 1987 1988 1989 1990 

SIMULATED SEDIMENT C0NC AT REACH 210 
MONOCACY RIVER AT JUG BRIDGE NEAR FREDERICK, MD 





SIMULATED WATER TEMPERATURE AT REACH 210 
MONOCACY RIVER AT JUG BRIDGE NEAR FREDERICK, MD 









































REACH 2 
T JUG B 
























ODOOt 



Appendix C Monocacy Model Segments Results 


1984 1985 1986 



































oooot 



O o O 03 CO ^ 0>J CD CO (O ^ CN CD 

<3> CN t- ^ t- 

O 
<=> 

04 


{S J 0} MOU 1/3H NI N 1V101 


Appendix C Monocacy Model Segments Results 


1984 1985 1986 








20000 



(SJO) MOlJ 


1/OH Ni d-tOd 


Appendix C Monocacy Model Segments Results 












oooot 


CO 

era 


C n 3 



Appendix C Monocacy Modef Segments Results 


1984 1985 






Appendix C Monocacy Model Segments Results 



















20000 



{SJ3} MOU 1/3H NI OOi 


Appendix C Monocacy Model Segments Results 


1984 1985 1986 







J 00003 



cn 

<y> 


o 

can 

era 


CJ> 
O — 
— Q 1 

05 Cvj UJ 
OO 

o x u 
^ U K 
•< u_ 


or or 

•< 


OO CP UJ 

oo z cp 

OT O O 
— CP — 

on 


_I CD 

_I Z=> 


CO o < 

on a: 

-— o ctz 

—I UJ 
3Z >- 
CP — 
ctz 
o 

UJ >- 
•— CJ 

-<c <£ 

CO _I CP 

on o 

a z 
— o 

CO 3E 


lO 

CO 

On 


CO 

05 



{SJO) * 01 J 


i/on n i v iho 


C40 


Appendix C Monocacy Model Segments Results 

















AGCHEM RESULTS FOR MONOCACY (HI-TILL), SEGMENT 212 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

47.38 

37.01 

35.51 

38.42 

39.58 

Runoff (in) 

Surface 

9.686 

3.100 

3.673 

3.749 

5.052 

Interflow 

7.846 

4.593 

4.071 

4.385 

5.224 

Baseflow 

8.070 

5.202 

4.463 

5.505 

5.810 

Total 

25.60 

12.90 

12.21 

13.64 

16.09 

Sediment Loss (t/a) 

0.5910 

0.1110 

0.2310 

0.2000 

0.2833 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.7421 

0.1587 

0.1585 

0.1851 

0.3111 

Interflow 

7.737 

6.882 

3.423 

3.018 

5.265 

Baseflow 

2.391 

2.253 

2.953 

3.927 

2.881 

Total 

10.87 

9.294 

6.535 

7.130 

8.457 

NH3 Loss 

Surface 

1.533 

0.2801 

0.4027 

0.4231 

0.6597 

Interflow 

0.9724 

1.258 

1.437 

1.229 

1.224 

Baseflow 

0.4781E-01 

0.1504E-01 

0.9153E-02 

0.8663E-02 

0.2017E-01 

Sediment 

0.6726E-02 

0.1103E-02 

0.2394E-02 

0.2126E-02 

0.3087E-02 

Total 

2.560 

1.554 

1.851 

1.663 

1.907 

ORGN Sediment 

1.917 

0.3386 

0.7584 

0.6509 

0.9162 

Total N Loss (Ib/a) 

15.35 

11.19 

9.145 

9.444 

11.28 

P04 Loss 

Surface 

0.7139 

0.2715 

-0.2482 

0.2977 

0.3828 

Interflow 

0.5020 

0.5438 

0.4460 

0.4509 

0.4857 

Baseflow 

0.1237E-02 

0.3198E-04 

0.2970E-04 

0.3326E-04 

0.3330E-03 

Sediment 

0.2498E-01 

0.4495E-02 

0.9878E-02 

0.8672E-02 

0.1201E-01 

Total 

1.242 

0.8199 

0.7040 

0.7574 

0.8808 

ORGP Sediment 

0.5309 

0.9394E-01 

0.2102 

0.1802 

0.2538 

Total P Loss (Ib/a) 

1.773 

0.9138 

0.9142 

0.9376 

1.135 

Atm Depn. N03 (Ib/a) 

7.537 

6.682 

6.514 

6.913 

6.911 

Atm Depn. NH4 (Ib/a) 

2.396 

1.904 

1.691 

2.022 

2.003 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

83.22 

84.26 

84.42 

84.42 

84.08 

Nitrate appln.(lb/a) 

23.95 

24.30 

24.35 

24.35 

24.24 

ORGN appln.(lb/a) 

14.82 

14.82 

14.82 

14.82 

14.82 

Total N appln.(lb/a) 

122.0 

123.4 

123.6 

123.6 

123.1 

P04-p appln.(lb/a) 

30.50 

30.17 

30.50 

30.50 

30.42 

ORGP appln.(lb/a) 

3.720 

3.720 

3.720 

3.720 

3.720 

Total P appln.(lb/a) 

34.22 

33.89 

34.22 

34.22 

34.14 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2100E-01 

0.1100E-01 

0.4000E-02 

0.1700E-01 

0.1325E-01 

Upper 

65.29 

56.20 

57.98 

71.63 

62.78 

Lower 

28.77 

44.03 

44.02 

44.03 

40.21 

Total 

94.08 

100.2 

102.0 

115.7 

103.0 

Phosphorus 

Surface 

0.2200E-01 

0.1200E-01 

0.5000E-02 

0.1800E-01 

0.1425E-01 

Upper 

21.69 

21.46 

23.72 

22.19 

22.27 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

24.52 

24.28 

26.53 

25.01 

25.08 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.380 

1.390 

1.396 

1.384 

1.387 

Upper 

29.69 

38.79 

37.00 

23.35 

32.21 

Lower 

15.36 

0.0000 

0.0000 

0.0000 

3.840 

Total 

46.43 

40.18 

38.40 

24.74 

37.44 

Phosphorus 

Surface 

1.379 

1.389 

1.396 

1.382 

1.387 

Upper 

2.147 

2.362 

0.1285 

1.624 

1.565 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.526 

3.751 

1.525 

3.006 

2.952 

Other Fluxes-Ib/ac 

N Mineralization 

10.45 

17.15 

19.74 

19.88 

16.81 

P Mineralization 

3.368 

3.401 

3.285 

3.438 

3.373 

Denitrification 

0.6276 

2.004 

3.536 

2.369 

2.134 

N Immobilization 

16.60 

18.29 

18.15 

17.58 

17.66 

P Immobilization 7.533 8.255 

Appendix C Monocacy Model Segments Results 

5.686 

8.989 

7.616 



AGCHEM RESULTS FOR MONOCACY (HI-TILL), SEGMENT 212 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

35.70 

41.36 

45.15 

35.53 

39.43 

Runoff (in) 

Surface 

4.893 

5.825 

5.687 

4.738 

5.286 

Interflow 

3.676 

5.428 

•5.655 

3.631 

4.598 

Baseflow 

4.348 

6.058 

5.374 

4.539 

5.080 

Total 

12.92 

17.31 

16.72 

12.91 

14.96 

Sediment Loss (t/a) 

0.5320 

0.4840 

0.3840 

0.9400 

0.5850 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2683 

0.4020 

0.3914 

0.2043 

0.3165 

Interflow 

8.733 

10.30 

6.099 

2.604 

6.934 

Baseflow 

2.015 

4.485 

1.804 

0.5469 

2.213 

Total 

11.02 

15.18 

8.294 

3.355 

9.462 

NH3 Loss 

Surface 

0.4221 

0.7728 

0.6667 

0.4652 

0.5817 

Interflow 

1.663 

2.051 

1.759 

0.8355 

1.577 

Baseflow 

0.5575E-02 

0.6919E-02 

0.5129E-02 

0.4007E-02 

0.5408E-02 

Sediment 

0.5748E-02 

0.5487E-02 

0.431 IE-02 

0.1110E-01 

0.6661E-02 

Total 

2.097 

2.836 

2.435 

1.316 

2.171 

ORGN Sediment 

1.762 

1.594 

1.274 

3.179 

1.952 

Total N Loss (Ib/a) 

14.88 

19.61 

12.00 

7.850 

13.59 

P04 Loss 

Surface 

0.5766 

0.4688 

0.6814 

0.2543 

0.4953 

Interflow 

0.7700 

0.7647 

0.6961 

0.2672 

0.6245 

Baseflow 

0.2481E-04 

0.3924E-04 

0.3553E-04 

0.2078E-04 

0.3009E-04 

Sediment 

0.2579E-01 

0.2196E-01 

0.1850E-01 

0.4376E-01 

0.2750E-01 

Total 

1.372 

1.256 

1.396 

0.5653 

1.147 

ORGP Sediment 

0.4871 

0.4414 

0.3527 

0.8822 

0.5409 

Total P Loss (Ib/a) 

1.860 

1.697 

1.749 

1.447 

1.688 

Atm Depn. N03 (Ib/a) 

6.617 

7.267 

7.268 

6.486 

6.910 

Atm Depn. NH4 (Ib/a) 

1.905 

2.341 

2.248 

1.723 

2.054 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

82.09 

84.28 

82.41 

83.05 

82.96 

Nitrate appln.(lb/a) 

23.57 

24.30 

23.68 

23.89 

23.86 

ORGN appln.(lb/a) 

14.82 

14.82 

14.82 

14.82 

14.82 

Total N appln.(lb/a) 

120.5 

123.4 

120.9 

121.8 

121.6 

P04-p appln.(lb/a) 

29.84 

30.22 

29.42 

30.04 

29.88 

ORGP appln.(lb/a) 

3.720 

3.720 

3.720 

3.720 

3.720 

Total P appln.(lb/a) 

33.56 

33.94 

33.14 

33.76 

33.60 

Plant Uptake (lb/a) 

Nitrogen 

Surface 

0.1600E-01 

0.1700E-01 

0.9000E-02 

0.6000E-02 

0.1200E-01 

Upper 

48.79 

59.44 

62.52 

65.67 

59.10 

Lower 

44.05 

44.03 

39.89 

41.06 

42.26 

Total 

92.85 

103.5 

102.4 

106.7 

101.4 

Phosphorus 

Surface 

0.1700E-01 

0.1600E-01 

0.1000E-01 

0.6000E-02 

0.1225E-01 

Upper 

22.13 

21.25 

22.05 

23.72 

22.29 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

24.95 

24.07 

24.86 

26.52 

25.10 

Deficit (lb/a) 

Nitrogen 

Surface 

1.385 

1.384 

1.391 

1.395 

1.389 

Upper 

46.19 

35.54 

32.47 

29.34 

35.88 

Lower 

0.0000 

0.0000 

4.132 

2.986 

1.780 

Total 

47.57 

36.93 

37.99 

33.72 

39.05 

Phosphorus 

Surface 

1.384 

1.384 

1.391 

1.395 

1.388 

Upper 

1.697 

2.563 

1.781 

0.9997E-01 

1.535 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.081 

3.947 

3.172 

1.495 

2.924 

Other Fluxes-Ib/ac 

N Mineralization 

18.10 

18.60 

15.03 

14.31 

16.51 

P Mineralization 

3.347 

3.475 

3.410 

3.260 

3.373 

Denitrification 

2.785 

2.887 

1.286 

0.5474 

1.876 

N Immobilization 

17.92 

17.75 

17.40 

17.19 

17.57 

Q44mmobi l i zat i on 

6.632 

9.357 

7.631 

*' AppendoPfe Monocacy Model Segments Results 



AGCHEM RESULTS FOR MONOCACY (LOW-TILL), SEGMENT 213 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

47.38 

37.01 

35.51 

38.42 

39.58 

Runoff (in) 

Surface 

7.760 

2.118 

2.775 

2.464 

3.779 

Interflow 

7.917 

4.355 

3.929 

4.191 

5.098 

Baseflow 

8.717 

5.611 

4.764 

5.983 

6.269 

Total 

24.39 

12.08 

11.47 

12.64 

15.15 

Sediment Loss (t/a) 

0.2700 

0.4788E-01 

0.1020 

0.7806E-01 

0.1245 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.6188 

0.1105 

0.1102 

0.1110 

0.2376 

Interflow 

8.772 

8.400 

1.976 

2.195 

5.336 

Baseflow 

2.496 

2.317 

1.099 

0.6840 

1.649 

Total 

11.89 

10.83 

3.185 

2.990 

7.224 

NH3 Loss 

Surface 

1.420 

0.1970 

0.3940 

0.2834 

0.5736 

Interflow 

0.8590 

0.8940 

1.161 

0.9423 

0.9641 

Baseflow 

0.4987E-01 

0.1469E-01 

0.8601E-02 

0.8459E-02 

0.2041E-01 

Sediment 

0.3069E-02 

0.4464E-03 

0.1027E-02 

0.7761E-03 

0.1330E-02 

Total 

2.332 

1.106 

1.565 

1.235 

1.560 

ORGN Sediment 

1.095 

0.1713 

0.4060 

0.3094 

0.4954 

Total N Loss (Ib/a) 

15.31 

12.11 

5.156 

4.535 

9.278 

P04 Loss 

Surface 

0.7662 

0.2581 

0.2477 

0.2614 

0.3833 

Interflow 

0.4481 

0.3292 

0.1930 

0.2527 

0.3057 

Baseflow 

0.1245E-02 

0.3080E-04 

0.2447E-04 

0.2400E-04 

0.3311E-03 

Sediment 

0.1142E-01 

0.1827E-02 

0.4295E-02 

0.3228E-02 

0.5192E-02 

Total 

1.227 

0.5891 

0.4451 

0.5173 

0.6946 

ORGP Sediment 

0.2911 

0.4570E-01 

0.1083 

0.8237E-01 

0.1319 

Total P Loss (Ib/a) 

1.518 

0.6348 

0.5534 

0.5997 

0.8265 

Atm Depn. N03 (Ib/a) 

7.537 

6.682 

6.514 

6.913 

6.911 

Atm Depn. NH4 (Ib/a) 

2.396 

1.904 

1.691 

2.022 

2.003 

Atm Depn. 0RGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. 0RGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

91.70 

92.07 

92.32 

92.32 

92.10 

Nitrate appln.(lb/a) 

26.86 

26.99 

27.07 

27.07 

27.00 

ORGN appln.(lb/a) 

14.64 

14.64 

14.64 

14.64 

14.64 

Total N appln.(lb/a) 

133.2 

133.7 

134.0 

134.0 

133.7 

P04-p appln.(lb/a) 

32.08 

31.58 

32.08 

32.08 

31.95 

ORGP appln.(lb/a) 

3.660 

3.660 

3.660 

3.660 

3.660 

Total P appln.Clb/a) 

35.74 

35.24 

35.74 

35.74 

35.61 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.3600E-01 

0.2100E-01 

0.1200E-01 

0.2400E-01 

0.2325E-01 

Upper 

71.61 

59.43 

72.93 

84.99 

72.24 

Lower 

30.79 

48.80 

46.86 

31.92 

39.59 

Total 

102.4 

108.3 

119.8 

116.9 

111.9 

Phosphorus 

Surface 

0.3200E-01 

0.1800E-01 

0.1000E-01 

0.2200E-01 

0.2050E-01 

Upper 

22.50 

21.15 

23.71 

22.93 

22.57 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

25.33 

23.97 

26.52 

25.75 

25.39 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.515 

1.530 

1.539 

1.527 

1.528 

Upper 

33.54 

45.73 

32.24 

20.17 

32.92 

Lower 

18.04 

0.0000 

1.910 

16.81 

9.190 

Total 

53.10 

47.26 

35.68 

38.51 

43.64 

Phosphorus 

Surface 

1.369 

1.383 

1.390 

1.378 

1.380 

Upper 

1.327 

2.665 

0.1285 

0.8918 

1.253 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

2.696 

4.048 

1.519 

2.270 

2.633 

Other Fluxes-Ib/ac 

N Mineralization 

10.98 

16.98 

16.56 

13.47 

14.50 

P Mineralization 

3.880 

3.516 

3.623 

3.769 

3.697 

Denitrification 

0.6502 

1.998 

1.414 

0.4859 

1.137 

N Immobilization 

19.09 

20.74 

20.09 

19.75 

19.92 

P Immobilization 

11.89 

10.79 

7.588 

12.05 

10.58 

Appendix C Monocacy Model Segments Results 





C45 


AGCHEM RESULTS FOR MONOCACY (LOW-TJLL), SEGMENT 213 



1988 

1989 

1990 

1991 

SUH/AVER 

Rainfall (in) 

35.70 

41.36 

45.15 

35.53 

39.43 

Runoff (in) 

Surface 

4.152 

4.646 

4.345 

3.759 

4.226 

Interflow 

3.498 

5.297 

5.486 

3.453 

4.434 

Baseflow 

4.698 

6.483 

5.812 

4.842 

5.459 

Total 

12.35 

16.43 

15.64 

12.05 

14.12 

Sediment Loss (t/a) 

0.2570 

0.2310 

0.1540 

0.4330 

0.2688 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2177 

0.3751 

0.3781 

0.1506 

0.2804 

Interflow 

10.36 

11.40 

7.193 

1.294 

7.562 

Baseflow 

2.156 

3.192 

1.562 

0.4333 

1.836 

Total 

12.73 

14.97 

9.133 

1.878 

9.678 

NH3 Loss 

Surface 

0.4520 

0.8162 

0.7370 

0.4094 

0.6037 

Interflow 

1.436 

1.752 

1.605 

0.6684 

1.365 

Baseflow 

0.5537E-02 

0.6641E-02 

0.4890E-02 

0.3894E-02 

0.5240E-02 

Sediment 

0.2793E-02 

0.2694E-02 

0.1675E-02 

0.4945E-02 

0.3027E-02 

Total 

1.897 

2.578 

2.349 

1.087 

1.978 

ORGN Sediment 

1.061 

0.9401 

0.6174 

1.817 

1.109 

Total N Loss (Ib/a) 

15.69 

18.49 

12.10 

4.782 

12.77 

P04 Loss 

Surface 

0.7974 

0.6777 

0.8152 

0.2829 

0.6433 

Interflow 

0.7813 

0.6334 

0.4565 

0.1322 

0.5009 

Baseflow 

0.1599E-04 

0.2166E-04 

0.1639E-04 

0.7540E-05 

0.1539E-04 

Sediment 

0.1311E-01 

0.1077E-01 

0.7354E-02 

0.1983E-01 

0.1277E-01 

Total. 

1.592 

1.322 

1.279 

0.4350 

1.157 

ORGP Sediment 

0.2827 

0.2502 

0.1647 

0.4859 

0.2959 

Total P Loss (Ib/a) 

1.875 

1.572 

1.444 

0.9209 

1.453 

Atm Depn. N03 (Ib/a) 

6.617 

7.267 

7.268 

6.486 

6.910 

Atm Depn. NH4 (Ib/a) 

1.905 

2.341 

2.248 

1.723 

2.054 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

89.39 

92.11 

89.89 

91.01 

90.60 

Nitrate appln.(lb/a) 

26.10 

27.00 

26.26 

26.63 

26.50 

ORGN appln.(lb/a) 

14.64 

14.64 

14.64 

14.64 

14.64 

Total N appln.(lb/a) 

130.1 

133.7 

130.8 

132.3 

131.7 

P04-p appln.(lb/a) 

31.07 

31.65 

30.77 

31.52 

31.25 

ORGP appln.(lb/a) 

3.660 

3.660 

3.660 

3.660 

3.660 

Total P appln.(lb/a) 

34.73 

35.31 

34.44 

35.18 

34.91 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2800E-01 

0.3200E-01 

0.2900E-01 

0.9000E-02 

0.2450E-01 

Upper 

50.92 

66.75 

69.14 

82.11 

67.23 

Lower 

48.80 

43.56 

38.66 

33.96 

41.24 

Total 

99.74 

110.3 

107.8 

116.1 

108.5 

Phosphorus 

Surface 

0.2300E-01 

0.2700E-01 

0.2600E-01 

0.9000E-02 

0.2125E-01 

Upper 

22.14 

20.99 

21.84 

23.72 

22.18 

Lower 

2.802 

2.801 

2.801 

2.801 

2.801 

Total 

24.97 

23.82 

24.67 

26.53 

25.00 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.523 

1.519 

1.522 

1.542 

1.526 

Upper 

54.23 

38.41 

36.02 

23.05 

37.93 

Lower 

0.0000 

5.245 

10.11 

14.77 

7.531 

Total 

55.76 

45.17 

47.66 

39.36 

46.99 

Phosphorus 

Surface 

1.378 

1.373 

1.375 

1.392 

1.379 

Upper 

1.686 

2.824 

1.972 

0.9997E-01 

1.645 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.064 

4.198 

3.347 

1.492 

3.025 

Other Fluxes-Ib/ac 

N Mineralization 

18.00 

16.38 

13.66 

12.98 

15.26 

P Mineralization 

3.512 

3.694 

3.627 

3.532 

3.591 

Denitrification 

2.746 

2.028 

1.039 

0.3278 

1.535 

N Immobilization 

20.09 

19.94 

19.41 

19.19 

19.66 

Q40™°bi l i zat i on 

8.317 

11.06 

9.557 

6.101 

8.759 


Appendix C Monocacy Model Segments Results 



AGCHEM RESULTS FOR MONOCACY (HAY), SEGMENT 216 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

47.38 

37.01 

35.51 

38.42 

39.58 

Runoff (in) 

Surface 

10.41 

2.599 

3.321 

3.467 

4.949 

Interflow 

4.943 

2.559 

2.364 

2.579 

3.111 

Baseflow 

8.113 

5.155 

4.462 

5.727 

5.864 

Total 

23.46 

10.31 

10.15 

11.77 

13.92 

Sediment Loss (t/a) 

0.2490 

0.3629E-01 

0.7221E-01 

0.7791E-01 

0.1089 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.6408 

0.1460 

0.1505 

0.1557 

0.2733 

Interflow 

0.9947 

0.4207 

0.4446 

0.3201 

0.5450 

Baseflow 

2.773 

1.625 

2.068 

2.750 

2.304 

Total 

4.408 

2.191 

2.663 

3.226 

3.122 

NH3 Loss 

Surface 

0.6251 

0.1288 

0.1186 

0.1677 

0.2601 

Interflow 

0.3949E-01 

0.5839E-01 

0.5495E-01 

0.5725E-01 

0.5252E-01 

Baseflow 

0.4822E-01 

0.1501E-01 

0.8874E-02 

0.8292E-02 

0.2010E-01 

Sediment 

0.2535E-02 

0.3085E-03 

0.6609E-03 

0.7432E-03 

0.1062E-02 

Total 

0.7153 

0.2025 

0.1831 

0.2340 

0.3337 

ORGN Sediment 

0.6487 

0.8139E-01 

0.1814 

0.1972 

0.2772 

Total N Loss (Ib/a) 

5.772 

2.475 

3.027 

3.657 

3.733 

P04 Loss 

Surface 

0.8819 

0.2440 

0.2528 

0.3328 

0.4279 

Interflow 

0.1707 

0.2071E-01 

0.1668E-01 

0.3125E-01 

0.5984E-01 

Baseflow 

0.1243E-02 

0.2890E-04 

0.2480E-04 

0.2545E-04 

0.3305E-03 

Sediment 

0.1019E-01 

0.1317E-02 

0.2723E-02 

0.3146E-02 

0.4344E-02 

Total 

1.064 

0.2661 

0.2722 

0.3673 

0.4924 

ORGP Sediment 

0.1738 

0.2186E-01 

0.4927E-01 

0.5358E-01 

0.7463E-01 

Total P Loss (Ib/a) 

1.238 

0.2879 

0.3215 

0.4208 

0.5670 

Atm Depn. N03 (Ib/a) 

7.537 

6.682 

6.514 

6.913 

6.911 

Atm Depn. NH4 (Ib/a) 

2.396 

1.904 

1.691 

2.022 

2.003 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

7.353 

7.380 

7.380 

7.380 

7.373 

Nitrate appln.(lb/a) 

0.3810 

0.3900 

0.3900 

0.3900 

0.3877 

ORGN appln.(lb/a) 

8.160 

8.160 

8.160 

8.160 

8.160 

Total N appln.(lb/a) 

15.89 

15.93 

15.93 

15.93 

15.92 

P04-p appln.(lb/a) 

13.59 

13.87 

13.87 

13.87 

13.80 

ORGP apptn.(lb/a) 

2.160 

2.160 

2.160 

2.160 

2.160 

Total P appln.(lb/a) 

15.75 

16.03 

16.03 

16.03 

15.96 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.9000E-02 

0.3000E-02 

0.2000E-02 

0.6000E-02 

0.5000E-02 

Upper 

11.84 

12.56 

11.72 

13.69 

12.45 

Lower 

12.58 

12.58 

12.58 

12.58 

12.58 

Total 

24.43 

25.14 

24.30 

26.27 

25.03 

Phosphorus 

Surface 

0.2100E-01 

0.8000E-02 

0.3000E-02 

0.1200E-01 

0.1100E-01 

Upper 

14.18 

12.98 

12.50 

12.69 

13.09 

Lower 

2.002 

2.001 

2.001 

2.001 

2.001 

Total 

16.20 

14.99 

14.51 

14.70 

15.10 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.3914 

0.3967 

0.3986 

0.3946 

0.3953 

Upper 

15.30 

14.58 

15.42 

13.45 

14.69 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

15.69 

14.98 

15.82 

13.85 

15.08 

Phosphorus 

Surface 

0.9803 

0.9927 

0.9970 

0.9882 

0.9895 

Upper 

2.836 

4.028 

4.505 

4.317 

3.921 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

3.817 

5.020 

5.502 

5.306 

4.911 

Other Fluxes-Ib/ac 

N Mineralization 

17.33 

17.33 

17.08 

17.33 

17.27 

P Mineralization 

2.991 

2.766 

2.637 

2.649 

2.761 ' 

Denitrification 

0.8972 

1.248 

1.709 

1.752 

1.402 

N Immobilization 

2.698 

3.355 

3.221 

3.318 

3.148 

P Immobilization 

3.393 

2.116 

2.006 

2.134 

2.412 


Appendix C Monocacy Model Segments Results 



AGCHEM RESULTS FOR MONOCACY (HAY), SEGMENT 216 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

35.70 

41.36 

45.15 

35.53 

39.43 

Runoff (in) 

Surface 

4.618 

5.942 

5.582 

4.687 

5.207 

Interflow 

2.128 

3.431 

3.439 

2.115 

2.778 

Baseflow 

4.647 

6.300 

5.634 

4.744 

5.331 

Total 

11.39 

15.67 

14.66 

11.55 

13.32 

Sediment Loss (t/a) 

0.2050 

0.1970 

0.1340 

0.3230 

0.2148 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.2377 

0.3635 

0.2360 

0.1867 

0.2560 

Interflow 

0.3526 

0.3212 

0.4715 

0.3672 

0.3781 

Baseflow 

2.220 

3.027 

2.304 

1.781 

2.333 

Total 

2.810 

3.712 

3.012 

2.334 

2.967 

NH3 Loss 

Surface 

0.2132 

0.5312 

0.2639 

0.1963 

0.3012 

Interflow 

0.6506E-01 

0.6858E-01 

0.6590E-01 

0.5529E-01 

0.6371E-01 

Baseflow 

0.5186E-02 

0.5753E-02 

0.4362E-02 

0.3449E-02 

0.4688E-02 

Sediment 

0.2136E-02 

0.2094E-02 

0.1339E-02 

0.3528E-02 

0.2274E-02 

Total 

0.2856 

0.6076 

0.3355 

0.2585 

0.3718 

ORGN Sediment 

0.5502 

0.5246 

0.3526 

0.9051 

0.5831 

Total N Loss (Ib/a) 

3.646 

4.844 

3.700 

3.498 

3.922 

P04 Loss 

Surface 

0.2215 

0.9300 

0.4127 

0.4031 

0.4918 

Interflow 

0.1426E-01 

0.3110E-01 

0.3531E-01 

0.3267E-01 

0.2833E-01 

Baseflow 

0.1721E-04 

0.2318E-04 

0.1808E-04 

0.9650E-05 

0.1703E-04 

Sediment 

0.8645E-02 

0.8944E-02 

0.5516E-02 

0.1566E-01 

0.9691E-02 

Total 

0.2444 . 

0.9701 

0.4536 

0.4514 

0.5299 

ORGP Sediment 

0.1471 

0.1406 

0.9556E-01 

0.2478 

0.1578 

Total P Loss (Ib/a) 

0.3915 

1.111 

0.5491 

0.6993 

0.6877 

Atm Depn. N03 (Ib/a) 

6.617 

7.267 

7.268 

6.486 

6.910 

Atm Depn. NH4 (Ib/a) 

1.905 

2.341 

2.248 

1.723 

2.054 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

7.380 

7.380 

7.380 

7.370 

7.378 

Nitrate appln.(lb/a) 

0.3900 

0.3900 

0.3900 

0.3860 

0.3890 

ORGN appln.(lb/a) 

8.160 

8.160 

8.160 

8.160 

8.160 

Total N appln.(lb/a) 

15.93 

15.93 

15.93 

15.92 

15.93 

P04-p appln.(lb/a) 

13.87 

13.87 

13.87 

13.77 

13.84 

ORGP appln.(lb/a) 

2.160 

2.160 

2.160 

2.160 

2.160 

Total P appln.(lb/a) 

16.03 

16.03 

16.03 

15.93 

16.00 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.6000E-02 

0.8000E-02 

0.6000E-02 

0.3000E-02 

0.5750E-02 

Upper 

12.66 

13.77 

14.21 

11.99 

13.16 

Lower 

12.58 

12.58 

12.58 

12.58 

12.58 

Total 

25.25 

26.35 

26.79 

24.57 

25.74 

Phosphorus 

Surface 

0.1400E-01 

0.1900E-01 

0.1500E-01 

0.6000E-02 

0.1350E-01 

Upper 

12.24 

12.75 

12.48 

11.14 

12.15 

Lower 

2.002 

2.001 

2.001 

2.001 

2.001 

Total 

14.26 

14.77 

14.50 

13.15 

14.17 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.3941 

0.3924 

0.3941 

0.3976 

0.3945 

Upper 

14.47 

13.37 

12.93 

15.15 

13.98 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

14.87 

13.77 

13.33 

15.55 

14.38 

Phosphorus 

Surface 

0.9867 

0.9819 

0.9860 

0.9942 

0.9872 

Upper 

4.771 

4.260 

4.528 

5.873 

4.858 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

5.758 

5.241 

5.514 

6.867 

5.845 

Other Fluxes-Ib/ac 

N Mineralization 

17.95 

17.50 

17.58 

17.19 

17.56 

P Mineralization 

2.681 

2.786 

2.698 

2.456 

2.655 

Denitrification 

1.754 

1.722 

1.535 

1.550 

1.640 

N Immobilization 

3.539 

3.392 

3.456 

3.324 

3.428 

Q^gmmobi l i zat i on 

2.385 

1.694 

2.253 

2.770 

2.275 




Appendix C Monocacy Model Segments Results 



Per Acre Load Contributed from Each Land Use in Monocacy Basin (tb/ac) 


Segment 210 

<-Pervious 



FOR 

HTC 

LTC 

PAS 

NH3 

84 

0.09175 

2.56 

2.332 

0.133 

85 

0.0436 

1.554 

1.106 

0.05861 

86 

0.03996 

1.851 

1.565 

0.06723 

87 

0.04943 

1.663 

1.235 

0.07808 

88 

0.04404 

2.097 

1.897 

0.06389 

89 

0.06213 

2.836 

2.578 

0.09665 

90 

0.05813 

2.435 

2.349 

0.09967 

91 

0.04614 

1.316 

1.087 

0.09858 

1992 

: 0.054398 

2.039 

1.768625 

0.086964 

N03 

84 

2.87 

10.87 

11.89 

8.360001 

85 

1.41 

9.294 

10.83 

4.83 

86 

1.35 

6.535 

3.185 

4.37 

87 

1.6 

7.13 

2.99 

5.28 

88 

1.34 

11.02 

12.73 

4.27 

89 

1.83 

15.18 

14.97 

6.15 

90 

1.81 

8.294 

9.133 

5.98 

91 

1.52 

3.355 

1.878 

4.71 

1992 

1.71625 

8.95975 

8.45075 

5.49375 

ORGN 

84 

0.180677 

1.917 

1.095 

2.25939 

85 

0.046746 

0.3386 

0.1713 

0.5936 

86 

0.061957 

0.7584 

0.406 

1.09445 

87 

0.062328 

0.6509 

0.3094 

1.19091 

88 

0.206276 

1.762 

1.061 

0.97944 

89 

0.168063 

1.594 

0.9401 

1.59159 

90 

0.08904 

1.274 

0.6174 

1.84387 

91 

0.124285 

3.179 

1.817 

2.24826 

1992 0.117422 

1.434237 

0.80215 

1.475189 

TN 

84 

3.142427 

15.35 

15.31 

10.75239 

85 

1.500346 

11.19 

12.11 

5.48221 

86 

1.451917 

9.145 

5.156 

5.531681 

87 

1.711758 

9.443999 

4.535 

6.54899 

88 

1.590316 

14.88 

15.69 

5.31333 

89 

2.060193 

19.61 

18.49 

7.83824 

90 

1.95717 

12.0 

12.1 

7.92354 

91 

1.690425 

7.85 

4.782 

7.05684 

1992 

1.888069 

12.43363 

11.02162 

7.055902 

P04 

84 

0.009871 

1.242 

1.227 

0.07438 

85 

0.002622 

0.8199 

0.5891 

0.02609 

86 

0.002995 

0.704 

0.4451 

0.03607 

87 

0.00327 

0.7574 

0.5173 

0.03951 

88 

0.006409 

1.372 

1.592 

0.03251 

89 

0.00672 

1.256 

1.322 

0.05236 

90 

0.0047 

1.396 

1.279 

0.0577 

91 

0.007007 

0.5653 

0.435 

0.0604 

1992 0.005449 

1.014075 

0.925813 

0.047378 


URB 

-->■ 

HAY 

<-Impervious-> 

ANML RES 

0.385 

0.7153 

288.9274 

1.46 

0.151 

0.2025 

208.1008 

1.34 

0.171 

0.1831 

210.0806 

1.38 

0.2 

0.234 

206.2386 

1.4 

0.197 

0.2856 

191.1056 

1.32 

0.277 

0.6076 

228.8838 

1.43 

0.262 

0.3355 

253.7166 

1.44 

0.305 

0.2585 

189.1078 

1.34 

0.2435 

0.352762 

222.0201 

1.38875 

10.6 

4.408 

72.23186 

3.13 

6.14 

2.191 

52.0252 

2.86 

5.56 

2.663 

52.52015 

2.95 

6.6 

3.226 

51.55964 

3.01 

5.51 

2.81 

47.7764 

2.82 

7.9 

3.712 

57.22094 

3.06 

7.53 

3.012 

63.42916 

3.08 

6.12 

2.334 

47.27694 

2.88 

6.995 

3.0445 

55.50504 

2.97375 

2.35214 

0.6487 

2166.956 

3.2648 

0.63812 

0.08139 

1560.756 

2.97913 

0.9275 

0.1814 

1575.604 

3.07188 

1.05735 

0.1972 

1546.789 

3.13495 

1.16865 

0.5502 

1433.292 

2.93461 

1.64353 

0.5246 

1716.628 

3.18318 

1.57304 

0.3526 

1902.875 

3.20544 

2.1889 

0.9051 

1418.308 

3.00139 

1.443654 

0.430149 

1665.151 

3.096923 

13.33714 

5.772 

2528.115 

7.8548 

6.92912 

2.475 

1820.882 

7.17913 

6.6585 

3.027 

1838.205 

7.40188 

7.85735 

3.657 

1804.587 

7.54495 

6.87565 

3.646 

1672.174 

7.07461 

9.82053 

4.844 

2002.733 

7.67318 

9.36504 

3.7 

2220.021 

7.72544 

8.6139 

3.498 

1654.693 

7.22139 

8.682154 

3.827375 

1942.676 

7.459423 

0.302 

1.064 

72.23186 

0.677 

0.08224 

0.2661 

52.0252 

0.621 

0.119 

0.2722 

52.52015 

0.64 

0.133 

0.3673 

51.55964 

0.653 

0.147 

0.2444 

47.7764 

0.612 

0.21 

0.9701 

57.22094 

0.664 

0.202 

0.4536 

63.42916 

0.668 

0.274 

0.4514 

47.27694 

0.625 

0.183655 

0.511137 

55.50504 

0.645 


ORGP 


84 

0.025811 

0.5309 

0.2911 

0.32277 

85 

0.006678 

0.09394 

0.0457 

0.0848 

86 

0.008851 

0.2102 

0.1083 

0.15635 

87 

0.008904 

0.1802 

0.08237 

0.17013 

88 

0.029468 

0.4871 

0.2827 

0.13992 

89 

0.024009 

0.4414 

0.2502 

0.22737 

90 

0.01272 

0.3527 

0.1647 

0.26341 

91 

0.017755 

0.8822 

0.4859 

0.32118 

1992 0.016774 

0.39733 

0.213871 

0.210741 


0.33602 

0.1738 

433.3911 

0.4664 

0.09116 

0.02186 

312.1512 

0.42559 

0.1325 

0.04927 

315.1209 

0.43884 

0.15105 

0.05358 

309.3578 

0.44785 

0.16695 

0.1471 

286.6584 

0.41923 

0.23479 

0.1406 

343.3257 

0.45474 

0.22472 

0.09556 

380.575 

0.45792 

0.3127 

0.2478 

283.6617 

0.42877 

0.206236 

0.116196 

333.0302 

0.442418 


Total 

Load 

0.97515 

0.500427 

0.615396 

0.547111 

0.711705 

0.984982 

0.874533 

0.495924 

0.713153 


6.604238 

4.723645 

2.905484 

3.248722 

5.207224 

6.626168 

4.798737 

2.500029 

4.576781 


1.770999 

0.820372 

1.003806 

0.988334 

1.259294 

1.412373 

1.364766 

1.741752 

1.295212 


9.3491 

6.045249 

4.524644 

4.784267 

7.178741 

9.023892 

7.037954 

4.737769 

6.585202 


0.577228 

0.260204 

0.226946 

0.262034 

0.506844 

0.56951 

0.487915 

0.253682 

0.393045 


0.355428 

0.158274 

0.196636 

0.19067 

0.263099 

0.285722 

0.268374 

0.372197 

0.2613 


Appendix C Monocacy Model Segments Results 


C49 




Segment 210 


< 






-Impervious-> 

Total 

TP 

84 

FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Load 

0.035682 

1.773 

1.518 

0.39715 

0.63802 

1.238 

505.623 

1.1434 

0.932674 

85 

0.0093 

0.9138 

0.6348 

0.11089 

0.1734 

0.2879 

364.1764 

1.04659 

0.418465 

86 

0.011846 

0.9142 

0.5534 

0.19242 

0.2515 

0.3215 

367.641 

1.07884 

0.423587 

87 

0.012174 

0.9376 

0.5997 

0.20964 

0.28405 

0.4208 

360.9174 

1.10085 

0.452697 

88 

0.035877 

1.86 

1.875 

0.17243 

0.31395 

0.3915 

334.4348 

1.03123 

0.770064 

89 

0.030729 

1.697 

1.572 

0.27973 

0.44479 

1.111 

400.5466 

1.11874 

0.855212 

90 

0.01742 

1.749 

1.444 

0.32111 

0.42672 

0.5491 

444.0041 

1.12592 

0.756362 

91 

0.024762 

1.447 

0.9209 

0.38158 

0.5867 

0.6993 

330.9386 

1.05377 

0.625863 

MEAN 

0.022224 

1.41145 

1.139725 

0.258119 

0.389891 

0.627387 

388.5352 

1.087418 

0.654365 

BOO 










84 

4.87 

47.1 

23.88 

60.9 

63.4 

23.4 

5056.23 

26.4 

26.65551 

85 

1.26 

11.67 

7.110001 

16.0 

17.2 

3.99 

3641.764 

24.09 

8.019609 

86 

1.67 

16.92 

8.97 

29.5 

25.0 

6.09 

3676.41 

24.84 

11.36651 

87 

1.68 

20.07 

9.81 

32.1 

28.5 

8.940001 

3609.175 

25.35 

12.6823 

88 

5.56 

36.0 

21.33 

26.4 

31.5 

21.27 

3344.348 

23.73 

18.78904 

89 

4.53 

36.6 

21.39 

42.9 

44.3 

21.24 

4005.466 

25.74 

21.43853 

90 

2.4 

35.1 

16.05 

49.7 

42.4 

14.85 

4440.041 

25.92 

19.3798 

91 

3.35 

86.7 

35.4 

60.6 

59.0 

35.1 

3309.386 

24.27 

32.05347 

MEAN 

3.165 

36.27 

17.9925 

39.7625 

38.9125 

16.86 

3885.352 

25.0425 

18.7981 

SED 

84 

0.01874 

0.591 

0.27 

0.239 

0.231 

0.249 

0.0 

0.0 

0.182825 

85 

0.001111 

0.111 

0.04788 

0.0564 

0.0446 

0.03629 

0.0 

0.0 

0.032731 

86 

0.004392 

0.231 

0.102 

0.116 

0.08353 

0.07221 

0.0 

0.0 

0.068283 

87 

0.002938 

0.2 

0.07806 

0.125 

0.09462 

0.07791 

0.0 

0.0 

0.063274 

88 

0.03078 

0.532 

0.257 

0.103 

0.114 

0.205 

0.0 

0.0 

0.150915 

89 

0.0208 

0.484 

0.231 

0.168 

0.159 

0.197 

0.0 

0.0 

0.147809 

90 

0.005715 

0.384 

0.154 

0.198 

0.152 

0.134 

0.0 

0.0 

0.113114 

91 

0.02158 

0.94 

0.433 

0.249 

0.239 

0.323 

0.0 

0.0 

0.254175 

MEAN 

0.013257 

0.434125 

0.196617 

0.1568 

0.139719 

0.161801 

0.0 

0.0 

0.126641 


Appendix C Monocacy Model Segments Results 





Segment 750 


< 



-Pervious- 



-Impervious-> 

Total 

NH3 

84 

FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Load 

0.09233 

2.143 

1.915 

0.153 

0.48 

0.789 

326.8683 

* 1.46 

0.881907 

85 

0.06063 

2.058 

1.698 

0.106 

0.297 

0.3016 

266.4359 

1.38 

0.705342 

86 

0.05258 

3.462 

2.584 

0.08943 

0.248 

0.3093 

253.7347 

1.4 

0.987107 

87 

0.04041 

1.57 

1.154 

0.06618 

0.168 

0.3169 

197.7138 

1.4 

0.521905 

88 

0.03487 

1.844 

1.846 

0.05131 

0.15 

0.2345 

178.8383 

1.31 

0.668202 

89 

0.06344 

4.527 

3.772 

0.101 

0.284 

0.6103 

246.9185 

1.44 

1.378083 

90 

0.0633 

2.528 

2.337 

0.116 

0.353 

0.3229 

277.8625 

1.45 

0.890467 

91 

0.04263 

1.234 

1.047 

0.08112 

0.243 

0.2511 

182.2916 

1.38 

0.466266 

MEAN 

0.056274 

2.42075 

2.044125 

0.095505 

0.277875 

0.39195 

241.3329 

1.4025 

0.81241 

N03 

84 

2.85 

9.388 

10.94 

8.01 

10.3 

4.763 

81.71707 

3.14 

6.426301 

85 

1.98 

6.87 

7.231 

6.02 

7.61 

2.649 

66.60898 

2.95 

4.394911 

86 

1.79 

9.567 

6.273 

5.37 

6.81 

3.466 

63.43368 

3.01 

4.316612 

87 

1.33 

5.084 

3.737 

4.24 

5.29 

2.889 

49.42846 

3.0 

2.982077 

88 

1.11 

9.488 

12.03 

3.56 

4.54 

2.813 

44.70958 

2.8 

4.893993 

89 

1.86 

15.36 

16.79 

5.89 

7.44 

3.938 

61.72964 

3.08 

7.231478 

90 

1.99 

8.396 

9.661001 

6.24 

8.02 

3.396 

69.46562 

3.1 

5.214621 

91 

1.44 

2.918 

1.513 

4.25 

5.46 

2.496 

45.5729 

2.95 

2.322343 

MEAN 

1.79375 

8.383875 

8.521875 

5.4475 

6.93375 

3.30125 

60.33324 

3.00375 

4.722792 

ORGN 










84 

0.55279 

5.21 

3.278 

3.21657 

3.339 

1.612 

2451.512 

3.27222 

2.758922 

85 

0.102025 

1.362 

0.762 

2.10357 

1.91807 

0.4597 

1998.269 

3.07188 

1.276025 

86 

0.117236 

1.673 

0.8339 

1.64353 

1.53223 

0.3873 

1903.01 

3.13124 

1.206273 

87 

0.050085 

0.7046 

0.3179 

1.09445 

0.91637 

0.186 

1482.854 

3.12382 

0.771992 

88 

0.080878 

0.8249 

0.4472 

0.74942 

0.8533 

0.2211 

1341.287 

2.91977 

0.737146 

89 

0.201824 

2.515 

1.445 

1.85871 

1.7808 

0.7726 

1851.889 

3.20915 

1.521105 

90 

0.228536 

2.958 

1.689 

2.43747 

2.42263 

0.9073 

2083.969 

3.22399 

1.796147 

91 

0.087927 

2.873 

1.564 

1.71773 

1.66579 

0.6968 

1367.187 

3.07559 

1.378968 

MEAN 

0.177663 

2.265063 

1.292125 

1.852681 

1.803524 

0.65535 

1809.997 

3.128458 

1.430822 


TN 


84 

3.49512 

16.74 

16.14 

11.37957 

14.119 

7.163 

2860.097 

7.87222 

10.06844 

85 

2.142655 

10.29 

9.691001 

8.22957 

9.82507 

3.41 

2331.314 

7.40188 

6.376228 

86 

1.959816 

14.7 

9.691001 

7.10296 

8.59023 

4.163 

2220.179 

7.54124 

6.509948 

87 

1.420495 

7.359 

5.209 

5.40063 

6.37437 

3.392 

1729.996 

7.52382 

4.27604 

88 

1.225748 

12.16 

14.33 

4.36073 

5.5433 

3.268 

1564.835 

7.02977 

6.300951 

89 

2.125264 

22.41 

22.0 

7.84971 

9.5048 

5.321 

2160.537 

7.72915 

10.12967 

90 

2.281836 

13.88 

13.69 

8.793469 

10.79563 

4.626 

2431.297 

7.77399 

7.90173 

91 

1.570557 

7.025 

4.125 

6.04885 

7.36879 

3.444 

1595.051 

7.40559 

4.167815 

MEAN 2.027686 

13.0705 

11.8595 

7.395686 

9.015149 

4.348375 

2111.663 

7.534708 

6.966353 

P04 

84 

0.02156 

1.122 

1.184 

0.09298 

0.424 

1.284 

81.71707 

0.679 

0.625552 

85 

0.005682 

1.066 

0.7256 

0.06431 

0.247 

0.4217 

66.60898 

0.641 

0.353882 

86 

0.005176 

0.9512 

0.6883 

0.05185 

0.197 

0.4775 

63.43368 

0.653 

0.343097 

87 

0.002682 

0.6846 

0.4702 

0.03494 

0.116 

0.3016 

49.42846 

0.651 

0.237612 

88 

0.003258 

1.157 

1.401 

0.02635 

0.109 

0.188 

44.70958 

0.608 

0.452506 

89 

0.01142 

1.618 

1.723 

0.05767 

0.228 

1.217 

61.72964 

0.669 

0.745784 

90 

0.008136 

1.62 

1.488 

0.07163 

0.31 

0.3754 

69.46562 

0.672 

0.557404 

91 

0.005329 

0.6347 

0.4684 

0.04854 

0.21 

0.3716 

45.5729 

0.641 

0.250999 

MEAN 

0.007905 

1.106688 

1.018563 

0.056034 

0.230125 

0.5796 

60.33324 

0.65175 

0.445854 

ORGP 










84 

0.07897 

1.445 

0.8733 

0.45951 

0.477 

0.4336 

490.3025 

0.46746 

0.597826 

85 

0.014575 

0.3773 

0.203 

0.30051 

0.27401 

0.1243 

399.6539 

0.43884 

0.252014 

86 

0.016748 

0.4638 

0.2224 

0.23479 

0.21889 

0.1054 

380.6021 

0.44732 

0.244161 

87 

0.007155 

0.1955 

0.08488 

0.15635 

0.13091 

0.05049 

296.5707 

0.44626 

0.149261 

88 

0.011554 

0.2284 

0.1194 

0.10706 

0.1219 

0.05919 

268.2575 

0.41711 

0.147612 

89 

0.028832 

0.6964 

0.3855 

0.26553 

0.2544 

0.2082 

370.3778 

0.45845 

0.320814 

90 

0.032648 

0.8206 

0.4518 

0.34821 

0.34609 

0.2479 

416.7938 

0.46057 

0.377705 

91 

0.012561 

0.7986 

0.4194 

0.24539 

0.23797 

0.1921 

273.4374 

0.43937 

0.300282 

MEAN 

0.02538 

0.6282 

0.34496 

0.264669 

0.257646 

0.177648 

361.9995 

0.446923 

0.29871 


Appendix C Monocacy Model Segments Results 


C51 




Segment 750 


< 



-Perv 

ious- 



-Impervious-> 

Total 

TP 

84 

FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Load 

0.10053 

2.567 

2.057 

0.55249 

0.901 

1.717 

572.0195 

1.14646 

1.22321 

85 

0.020257 

1.444 

0.9286 

0.36482 

0.52101 

0.546 

466.2628 

1.07984 

0.605943 

86 

0.021924 

1.415 

0.9107 

0.28664 

0.41589 

0.5829 

444.0357 

1.10032 

0.587258 

87 

0.009837 

0.8801 

0.555 

0.19129 

0.24691 

0.3521 

345.9992 

1.09726 

0.386857 

88 

0.014812 

1.386 

1.521 

0.13341 

0.2309 

0.2472 

312.9671 

1.02511 

0.600293 

89 

0.040252 

2.314 

2.108 

0.3232 

0.4824 

1.426 

432.1075 

1.12745 

1.066596 

90 

0.040784 

2.441 

1.939 

0.41984 

0.65609 

0.6233 

486.2593 

1.13257 

0.934959 

91 

0.01789 

1.433 

0.8878 

0.29393 

0.44797 

0.5637 

319.0103 

1.08037 

0.551261 

MEAN 

0.033286 

1.735012 

1.363387 

0.320702 

0.487771 

0.757275 

422.3327 

1.098673 

0.744547 

BOO 

84 

14.9 

115.2 

54.6 

86.7 

90.0 

54.0 

5720.195 

26.46 

51.43396 

85 

2.75 

38.1 

18.24 

56.7 

51.7 

18.54 

4662.628 

24.84 

22.15917 

86 

3.16 

36.9 

15.18 

44.3 

41.3 

11.61 

4440.357 

25.32 

18.21376 

87 

1.35 

20.1 

9.18 

29.5 

24.7 

8.01 

3459.992 

25.26 

11.61559 

88 

2.18 

18.72 

11.07 

20.2 

23.0 

9.210001 

3129.671 

23.61 

10.96228 

89 

5.44 

53.1 

30.3 

50.1 

48.0 

30.3 

4321.075 

25.95 

27.63228 

90 

6.16 

77.4 

34.2 

65.7 

65.3 

34.8 

4862.594 

26.07 

34.08295 

91 

2.37 

79.2 

31.2 

46.3 

44.9 

27.12 

3190.103 

24.87 

27.05357 

MEAN 

4.78875 

54.84 

25.49625 

49.9375 

48.6125 

24.19875 

4223.327 

25.2975 

25.3942 

SED 

84 

0.09842 

1.58 

0.795 

0.351 

0.357 

0.589 

0.0 

0.0 

0.477249 

85 

0.008354 

0.41 

0.188 

0.228 

0.194 

0.172 

0.0 

0.0 

0.139986 

86 

0.01195 

0.503 

0.204 

0.176 

0.151 

0.146 

0.0 

0.0 

0.137735 

87 

0.002153 

0.215 

0.08113 

0.116 

0.08411 

0.07267 

0.0 

0.0 

0.064646 

88 

0.008838 

0.252 

0.113 

0.07736 

0.07976 

0.08551 

0.0 

0.0 

0.073125 

89 

0.0367 

0.754 

0.354 

0.2 

0.178 

0.286 

0.0 

0.0 

0.224237 

90 

0.0309 

0.879 

0.406 

0.266 

0.255 

0.328 

0.0 

0.0 

0.261316 

91 

0.01265 

0.849 

0.372 

0.188 

0.177 

0.249 

0.0 

0.0 

0.218378 

MEAN 

0.026246 

0.68025 

0.314141 

0.200295 

0.184484 

0.241022 

0.0 

0.0 

0.199584 


C52 


Appendix C Monocacy Model Segments Results 





Percent of Total Load Contributed from Each Land Use in Monocacy Basin 


Segment 210 

<-Pervious 




FOR 

HTC 

LTC 

PAS 

NH3 


84 

1.81 

8.76 

26.36 

0.94 


85 

1.13 

7.01 

16.48 

0.55 


86 

0.96 

7.69 

21.47 

0.58 


87 

1.24 

7.26 

17.81 

0.70 


88 

0.93 

7.73 

23.09 

0.49 


89 

1.08 

8.57 

25.74 

0.60 


90 

1.07 

7.76 

24.74 

0.66 


91 

1.13 

5.62 

15.33 

0.87 

MEAN 


1.17 

7.64 

21.91 

0.67 

N03 

84 

14.60 

9.61 

34.71 

15.26 


85 

9.67 

11.07 

42.61 

11.88 


86 

13.98 

11.76 

18.93 

16.23 


87 

15.13 

11.71 

16.23 

17.91 


88 

8.32 

11.88 

45.35 

9.51 


89 

9.08 

13.08 

42.60 

10.94 


90 

11.91 

9.48 

34.50 

14.12 


91 

17.47 

6.70 

12.39 

19.42 

MEAN 


11.98 

10.86 

33.84 

13.75 

ORGN 


84 

3.26 

6.01 

11.34 

14.62 


85 

1.57 

1.98 

3.30 

7.15 


86 

1.78 

3.78 

6.69 

11.28 


87 

1.81 

3.29 

5.17 

12.44 


88 

4.84 

7.19 

14.30 

8.25 


89 

3.53 

5.82 

11.33 

11.99 


90 

1.92 

4.78 

7.65 

14.29 


91 

2.24 

9.95 

18.79 

14.52 

MEAN 


2.71 

5.75 

10.63 

12.22 

TN 


84 

10.38 

8.81 

29.03 

12.74 


85 

7.01 

9.08 

32.44 

9.18 


86 

8.38 

9.17 

17.09 

11.46 


87 

9.52 

9.12 

14.47 

13.06 


88 

6.34 

10.31 

35.91 

7.60 


89 

6.72 

11.11 

34.59 

9.17 


90 

7.74 

8.25 

27.49 

11.25 


91 

9.23 

7.44 

14.98 

13.82 

MEAN 


8.11 

9.27 

27.15 

10.86 

P04-P 


84 

0.41 

8.98 

29.29 

1.11 


85 

0.16 

8.90 

21.13 

0.58 


86 

0.21 

8.72 

18.23 

0.92 


87 

0.25 

10.22 

23.05 

1.10 


88 

0.31 

11.46 

43.94 

0.56 


89 

0.28 

9.24 

32.12 

0.80 


90 

0.22 

11.33 

34.31 

0.97 


91 

0.44 

6.23 

15.83 

1.37 

MEAN 


0.29 

9.49 

28.62 

0.92 

ORGP 


84 

2.32 

8.28 

15.00 

10.40 


85 

1.14 

2.78 

4.46 

5.17 


86 

1.32 

5.43 

9.24 

8.33 


87 

1.44 

5.05 

7.63 

9.84 


88 

3.51 

10.08 

19.33 

5.98 


89 

2.61 

8.33 

15.61 

8.86 


90 

1.46 

7.01 

10.82 

10.82 


91 

1.52 

13.12 

23.87 

9.86 

MEAN 


1.97 

8.12 

14.44 

8.90 




-Impervious-> 

Point 

Total 

URB 

HAY 

ANML 

RES 

Source 

Load 

0.84 

6.18 

5.55 

1.77 

47.80 

100.00 

0.43 

2.31 

5.28 

2.14 

64.66 

100.00 

0.45 

1.92 

4.90 

2.03 

59.99 

100.00 

0.56 

2.58 

5.06 

2.16 

62.61 

100.00 

0.46 

2.66 

3.96 

1.72 

58.96 

100.00 

0.53 

4.64 

3.89 

1.53 

53.41 

100.00 

0.53 

2.70 

4.55 

1.62 

56.36 

100.00 

0.83 

2.79 

4.54 

2.02 

66.86 

100.00 

0.58 

3.34 

4.68 

1.84 

58.17 

100.00 

5.98 

9.85 

0.36 

0.98 

8.65 

100.00 

4.67 

6.59 

0.35 

1.20 

11.95 

100.00 

6.39 

12.10 

0.53 

1.88 

18.18 

100.00 

6.92 

13.39 

0.48 

1.75 

16.48 

100.00 

3.80 

7.66 

0.29 

1.08 

12.09 

100.00 

4.35 

8.08 

0.28 

0.93 

10.66 

100.00 

5.50 

8.71 

0.41 

1.25 

14.14 

100.00 

7.80 

11.77 

0.53 

2.03 

21.89 

100.00 

5.41 

9.33 

0.38 

1.27 

13.16 

100.00 


4.71 

5.14 

38.17 

3.62 

13.14 

100.00 

2.38 

1.20 

51.19 

6.15 

25.08 

100.00 

2.95 

2.29 

44.19 

5.42 

21.62 

100.00 

3.42 

2.52 

43.98 

5.61 

21.75 

100.00 

3.05 

5.67 

32.87 

4.24 

19.59 

100.00 

3.83 

4.84 

35.21 

4.11 

19.35 

100.00 

3.77 

3.34 

40.11 

4.25 

19.89 

100.00 

4.37 

7.16 

24.94 

3.32 

14.70 

100.00 

3.70 

4.36 

37.54 

4.39 

18.67 

100.00 

4.89 

8.37 

8.15 

1.59 

16.04 

100.00 

3.59 

5.07 

8.30 

2.06 

23.26 

100.00 

4.26 

7.68 

10.37 

2.63 

28.98 

100.00 

4.85 

8.93 

9.80 

2.58 

27.69 

100.00 

3.04 

6.38 

6.51 

1.73 

22.17 

100.00 

3.55 

6.93 

6.38 

1.54 

20.02 

100.00 

4.11 

6.43 

8.58 

1.88 

24.29 

100.00 

5.21 

8.38 

8.82 

2.42 

29.70 

100.00 

4.13 

7.21 

8.14 

1.97 

23.14 

100.00 

1.39 

19.44 

2.93 

1.73 

34.70 

100.00 

0.57 

7.30 

3.17 

2.38 

55.81 

100.00 

0.94 

8.53 

3.66 

2.81 

55.93 

100.00 

1.15 

12.52 

3.91 

3.12 

44.71 

100.00 

0.78 

5.16 

2.24 

1.81 

33.72 

100.00 

0.99 

18.03 

2.37 

1.73 

34.44 

100.00 

1.05 

9.31 

2.89 

1.92 

38.01 

100.00 

1.93 

12.57 

2.93 

2.44 

56.28 

100.00 

1.10 

12.09 

2.92 

2.13 

42.43 

100.00 

3.35 

6.85 

38.00 

2.57 

13.22 

100.00 

1.72 

1.63 

51.84 

4.45 

26.82 

100.00 

2.18 

3.21 

45.73 

4.01 

20.56 

100.00 

2.70 

3.79 

48.72 

4.44 

16.39 

100.00 

2.21 

7.70 

33.36 

3.07 

14.75 

100.00 

2.83 

6.71 

36.42 

3.04 

15.61 

100.00 

2.85 

4.80 

42.55 

3.22 

16.44 

100.00 

2.97 

9.31 

23.70 

2.25 

13.40 

100.00 

2.69 

6.00 

38.27 

3.20 

16.37 

100.00 


Appendix C Monocacy Model Segments Results 


C53 





Segment 210 




<-- 



-Pervious-- 



><-Impervious-> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAT 

ANHL 

RES 

Source 

Load 

TP 

84 

1.01 

8.76 

24.78 

4.05 

2.01 

15.45 

14.04 

2.00 

27.89 

100.00 


85 

0.42 

7.25 

16.64 

1.82 

0.88 

5.77 

16.24 

2.94 

48.01 

100.00 


86 

0.57 

7.66 

15.31 

3.33 

1.34 

6.81 

17.31 

3.20 

44.47 

100.00 


87 

0.64 

8.54 

18.04 

3.94 

1.65 

9.69 

18.47 

3.54 

35.51 

100.00 


88 

1.23 

11.07 

36.87 

2.12 

1.19 

5.89 

11.19 

2.17 

28.28 

100.00 


89 

0.94 

8.98 

27.48 

3.06 

1.50 

14.86 

11.92 

2.09 

29.17 

100.00 


90 

0.58 

10.08 

27.50 

3.82 

1.57 

8.00 

14.38 

2.29 

31.76 

100.00 


91 

0.90 

9.16 

19.25 

4.99 

2.37 

11.18 

11.77 

2.36 

38.02 

100.00 

MEAN 


0.82 

9.06 

24.17 

3.42 

1.60 

10.18 

14.02 

2.47 

34.25 

100.00 

BOD 

84 

6.10 

10.25 

17.17 

27.36 

8.81 

12.87 

6.18 

2.03 

9.25 

100.00 


85 

4.10 

6.59 

13.27 

18.66 

6.20 

5.70 

11.56 

4.81 

29.09 

100.00 


86 

4.13 

7.26 

12.72 

26.15 

6.85 

6.61 

8.87 

3.77 

23.64 

100.00 


87 

4.09 

8.48 

13.70 

28.01 

7.69 

9.55 

8.58 

3.79 

16.10 

100.00 


88 

8.94 

10.06 

19.69 

15.23 

5.62 

15.02 

5.25 

2.34 

17.86 

100.00 


89 

6.53 

9.17 

17.71 

22.19 

7.09 

13.45 

5.64 

2.28 

15.98 

100.00 


90 

3.76 

9.56 

14.44 

27.96 

7.38 

10.23 

6.80 

2.50 

17.37 

100.00 


91 

3.41 

15.33 

20.68 

22.13 

6.66 

15.69 

3.29 

1.52 

11.28 

100.00 

MEAN 


5.21 

10.38 

17.01 

23.49 

7.11 

12.19 

6.25 

2.53 

15.82 

100.00 

SED 

84 

3.77 

20.65 

31.18 

17.24 

5.16 

21.99 

0.00 

0.00 

0.00 

100.00 


85 

1.25 

21.66 

30.88 

22.73 

5.56 

17.90 

0.00 

0.00 

0.00 

100.00 


86 

2.37 

21.61 

31.53 

22.41 

4.99 

17.08 

0.00 

0.00 

0.00 

100.00 


87 

1.71 

20.20 

26.05 

26.07 

6.10 

19.89 

0.00 

0.00 

0.00 

100.00 


88 

7.50 

22.53 

35.95 

9.00 

3.08 

21.93 

0.00 

0.00 

0.00 

100.00 


89 

5.18 

20.92 

32.98 

15.00 

4.39 

21.52 

0.00 

0.00 

0.00 

100.00 


90 

1.86 

21.69 

28.75 

23.11 

5.48 

19.13 

0.00 

0.00 

0.00 

100.00 


91 

3.12 

23.64 

35.98 

12.93 

3.84 

20.53 

0.00 

0.00 

0.00 

100.00 

MEAN 


3.85 

21.90 

32.76 

16.33 

4.50 

20.64 

0.00 

0.00 

0.00 

100.00 


C54 


Appendix C Monocacy Model Segments Results 





Segment 750 




<-... 



-Pervious- 



><-Impervious-> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

NH3 

84 

2.47 

11.22 

33.11 

1.65 

1.45 

10.43 

5.99 

2.62 

31.05 

100.00 


85 

1.68 

11.13 

30.33 

1.18 

0.93 

4.12 

5.04 

2.56 

43.02 

100.00 


86 

1.35 

17.37 

42.82 

0.93 

0.72 

3.92 

4.45 

2.41 

26.01 

100.00 


87 

1.45 

11.01 

26.75 

0.96 

0.68 

5.62 

4.86 

3.37 

45.32 

100.00 


88 

1.06 

10.98 

36.33 

0.63 

0.52 

3.53 

3.73 

2.68 

40.53 

100.00 


89 

1.20 

16.66 

45.86 

0.77 

0.60 

5.68 

3.18 

1.82 

24.26 

100.00 


90 

1.63 

12.70 

38.81 

1.20 

1.02 

4.10 

4.89 

2.50 

33.13 

100.00 


91 

1.61 

9.10 

25.52 

1.24 

1.03 

4.68 

4.71 

3.50 

48.62 

100.00 

MEAN 


1.54 

12.98 

36.22 

1.06 

0.86 

5.31 

4.53 

2.58 

34.93 

100.00 

N03 

84 

14.57 

9.37 

36.09 

16.51 

5.93 

12.02 

0.29 

1.08 

4.15 

100.00 


85 

14.23 

9.65 

33.54 

17.45 

6.16 

9.40 

0.33 

1.42 

7.82 

100.00 


86 

13.45 

14.05 

30.42 

16.28 

5.76 

12.86 

0.33 

1.52 

5.33 

100.00 


87 

13.87 

10.36 

25.16 

17.84 

6.21 

14.88 

0.35 

2.10 

9.22 

100.00 


88 

7.30 

12.18 

51.04 

9.44 

3.36 

9.13 

0.20 

1.23 

6.12 

100.00 


89 

8.45 

13.63 

49.24 

10.80 

3.81 

8.84 

0.19 

0.94 

4.10 

100.00 


90 

12.34 

10.17 

38.68 

15.61 

5.60 

10.40 

0.29 

1.29 

5.59 

100.00 


91 

18.76 

7.42 

12.72 

22.33 

8.01 

16.05 

0.41 

2.58 

11.74 

100.00 

MEAN 


12.23 

11.16 

37.48 

14.97 

5.32 

11.11 

0.28 

1.37 

6.07 

100.00 

ORGN 

84 

6.58 

12.12 

25.19 

15.45 

4.48 

9.48 

19.96 

2.61 

4.14 

100.00 


85 

2.44 

6.35 

11.74 

20.25 

5.16 

5.42 

32.61 

4.92 

11.13 

100.00 


86 

3.07 

8.55 

14.08 

17.34 

4.51 

5.00 

34.03 

5.49 

7.95 

100.00 


87 

1.90 

5.23 

7.80 

16.77 

3.92 

3.49 

38.53 

7.96 

14.38 

100.00 


88 

3.17 

6.32 

11.31 

11.85 

3.77 

4.28 

35.96 

7.68 

15.64 

100.00 


89 

4.18 

10.18 

19.33 

15.54 

4.16 

7.91 

26.25 

4.46 

8.00 

100.00 


90 

4.06 

10.27 

19.37 

17.47 

4.85 

7.96 

25.32 

3.84 

6.86 

100.00 


91 

1.99 

12.72 

22.88 

15.70 

4.25 

7.80 

21.19 

4.68 

8.75 

100.00 

MEAN 


3.90 

9.71 

18.30 

16.40 

4.46 

7.10 

27.16 

4.61 

8.38 

100.00 

TN 

84 

11.03 

10.32 

32.86 

14.48 

5.02 

11.16 

6.17 

1.67 

7.31 

100.00 


85 

9.87 

9.26 

28.80 

15.29 

5.10 

7.75 

7.34 

2.29 

14.32 

100.00 


86 

9.32 

13.66 

29.75 

13.63 

4.60 

9.78 

7.22 

2.41 

9.64 

100.00 


87 

9.47 

9.58 

22.41 

14.52 

4.79 

11.16 

7.89 

3.37 

16.83 

100.00 


88 

5.82 

11.29 

43.94 

8.36 

2.97 

7.67 

5.08 

2.24 

12.63 

100.00 


89 

6.61 

13.63 

44.18 

9.86 

3.33 

8.18 

4.60 

1.61 

8.01 

100.00 


90 

8.90 

10.58 

34.46 

13.84 

4.74 

8.91 

6.48 

2.03 

10.05 

100.00 


91 

10.66 

9.31 

18.06 

16.55 

5.63 

11.54 

7.40 

3.37 

17.47 

100.00 

MEAN 


8.86 

11.16 

33.45 

13.04 

4.44 

9.39 

6.31 

2.21 

11.13 

100.00 

P04 

84 

1.12 

11.34 

39.55 

1.94 

2.47 

32.81 

2.89 

2.36 

5.51 

100.00 


85 

0.50 

18.28 

41.11 

2.28 

2.44 

18.28 

4.00 

3.78 

9.33 

100.00 


86 

0.47 

16.98 

40.59 

1.91 

2.03 

21.55 

3.96 

4.00 

8.51 

100.00 


87 

0.33 

16.52 

37.51 

1.74 

1.61 

18.40 

4.18 

5.40 

14.33 

100.00 


88 

0.23 

15.67 

62.67 

0.74 

0.85 

6.43 

2.12 

2.83 

8.47 

100.00 


89 

0.52 

14.26 

50.16 

1.05 

1.16 

27.10 

1.90 

2.02 

1.83 

100.00 


90 

0.49 

18.98 

57.60 

1.73 

2.09 

11.12 

2.85 

2.70 

2.43 

100.00 


91 

0.69 

16.04 

39.10 

2.53 

3.06 

23.74 

4.03 

5.56 

5.24 

100.00 

MEAN 


0.57 

15.62 

47.50 

1.63 

1.87 

20.67 

2.98 

3.16 

6.01 

100.00 

ORGP 

84 

4.48 

16.00 

31.96 

10.51 

3.05 

12.14 

19.01 

1.78 

1.07 

100.00 


85 

1.93 

9.77 

17.37 

16.07 

4.09 

8.14 

36.23 

3.90 

2.49 

100.00 


86 

2.30 

12.43 

19.69 

12.99 

3.38 

7.14 

35.70 

4.12 

2.25 

100.00 


87 

1.57 

8.38 

12.02 

13.83 

3.23 

5.47 

44.48 

6.57 

4.49 

100.00 


88 

2.55 

9.86 

17.03 

9.55 

3.03 

6.46 

40.55 

6.19 

4.77 

100.00 


89 

3.06 

14.42 

26.37 

11.35 

3.04 

10.90 

26.85 

3.26 

0.76 

100.00 


90 

2.94 

14.45 

26.28 

12.66 

3.51 

11.03 

25.69 

2.79 

0.65 

100.00 


91 

1.42 

17.66 

30.64 

11.20 

3.03 

10.74 

21.16 

3.34 

0.81 

100.00 

MEAN 


2.86 

13.84 

25.12 

12.04 

3.27 

9.90 

27.92 

3.38 

1.66 

100.00 


Appendix C Monocacy Model Segments Results C55 





Segment 750 




<- 



-Pervious-- 



•><-lmpervious-> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

2.72 

13.57 

35.93 

6.03 

2.75 

22.95 

10.58 

2.08 

3.39 

100.00 


85 

1.07 

14.89 

31.65 

7.77 

3.10 

14.24 

16.84 

3.83 

6.60 

100.00 


86 

1.20 

15.17 

32.24 

6.34 

2.57 

15.78 

16.65 

4.05 

6.01 

100.00 


87 

0.78 

13.58 

28.31 

6.10 

2.20 

13.74 

18.69 

5.82 

10.78 

100.00 


88 

0.78 

14.28 

51.78 

2.84 

1.37 

6.44 

11.29 

3.63 

7.58 

100.00 


89 

1.27 

14.30 

43.03 

4.12 

1.72 

22.27 

9.34 

2.39 

1.51 

100.00 


90 

1.47 

17.17 

45.07 

6.10 

2.66 

11.08 

11.98 

2.74 

1.72 

100.00 


91 

1.08 

16.89 

34.59 

7.16 

3.05 

16.81 

13.17 

4.38 

2.88 

100.00 

MEAN 


1.47 

14.92 

38.75 

5.70 

2.42 

16.47 

12.72 

3.25 

4.31 

100.00 

BOO 

84 

9.70 

14.65 

22.93 

22.77 

6.60 

17.36 

2.55 

1.16 

2.29 

100.00 


85 

3.99 

10.80 

17.08 

33.18 

8.45 

13.28 

4.63 

2.42 

6.19 

100.00 


86 

5.47 

12.49 

16.98 

30.96 

8.06 

9.93 

5.26 

2.94 

7.90 

100.00 


87 

3.64 

10.60 

15.99 

32.11 

7.51 

10.67 

6.38 

4.57 

8.51 

100.00 


88 

5.85 

9.81 

19.16 

21.86 

6.95 

12.20 

5.74 

4.25 

14.20 

100.00 


89 

6.33 

12.07 

22.76 

23.52 

6.29 

17.41 

3.44 

2.03 

6.15 

100.00 


90 

5.88 

14.43 

21.07 

25.30 

7.02 

16.40 

3.17 

1.67 

5.04 

100.00 


91 

2.81 

18.36 

23.90 

22.17 

6.00 

15.90 

2.59 

1.98 

6.27 

100.00 

MEAN 


6.09 

13.61 

20.91 

25.60 

6.96 

15.19 

3.67 

2.16 

5.82 

100.00 

SED 

84 

7.07 

22.15 

36.84 

10.17 

2.89 

20.88 

0.00 

0.00 

0.00 

100.00 


85 

2.04 

19.60 

29.69 

22.51 

5.35 

20.78 

0.00 

0.00 

0.00 

100.00 


86 

2.97 

24.44 

32.75 

17.66 

4.23 

17.93 

0.00 

0.00 

0.00 

100.00 


87 

1.14 

22.26 

27.75 

24.80 

5.02 

19.02 

0.00 

0.00 

0.00 

100.00 


88 

4.14 

23.07 

34.17 

14.62 

4.21 

19.78 

0.00 

0.00 

0.00 

100.00 


89 

5.61 

22.50 

34.91 

12.33 

3.06 

21.58 

0.00 

0.00 

0.00 

100.00 


90 

4.05 

22.52 

34.36 

14.07 

3.77 

21.24 

0.00 

0.00 

0.00 

100.00 


91 

1.99 

26.02 

37.67 

11.90 

3.13 

19.29 

0.00 

0.00 

0.00 

100.00 

MEAN 


4.51 

22.81 

34.80 

13.87 

3.57 

20.43 

0.00 

0.00 

0.00 

100.00 


C56 


Appendix C Monocacy Model Segments Results 





Appendix D 

Alternative Nutrient Reduction 
Scenario Results for the 
Shenandoah Model Segments 


AGCHEM Summary for Alternative No. 1 for the Shenandoah Basin (Low-Till), 
PERLND 193 

AGCHEM Summary for Alternative No. 1 for the Shenandoah Basin (HAY), 
PERLND 196 

AGCHEM Summary for Alternative No. 2 for the Shenandoah Basin (Low-Till), 
PERLND 203 

AGCHEM Summary for Alternative No. 2 for the Shenandoah Basin (HAY), 
PERLND 206 

Per Acre Load Contributed from Each Land Use in Shenandoah Basin for Alternative 
No. 1 (lb/ac) 

Percent of Total Load Contributed from Each Land Use in Shenandoah Basin for 
Alternative No. 1 

Per Acre Load Contributed from Each Land Use in Shenandoah Basin for Alternative 
No. 2 (Ib/ac) 

Percent of Total Load Contributed from Each Land Use in Shenandoah Basin for 
Alternative No. 2 


Appendix D 


D1 



AGCHEH Summary for Alternative No. 1 for the Shenandoah Basin (Low-Till), PERLND 193 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 

Surface 

10.09 

8.250 

1.916 

7.327 

6.896 

Interflow 

3.565 

3.726 

1.503 

3.193 

2.997 

Baseflow 

7.245 

5.996 

4.483 

5.937 

5.915 

Total 

20.90 

17.97 

7.901 

16.46 

15.81 

Sediment Loss (t/a) 

1.010 

1.720 

0.1750 

1.050 

0.9887 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.7622 

0.3571 

0.8428E-01 

0.5882 

0.4479 

Interflow 

9.273 

7.700 

1.804 

5.069 

5.962 

Baseflow 

2.363 

0.5107 

0.2179 

0.7479 

0.9599 

Total 

12.40 

8.568 

2.106 

6.405 

7.370 

NH3 Loss 

Surface 

2.075 

0.6477 

0.1624 

1.275 

1.040 

Interflow 

0.4647 

0.8348 

0.1421 

0.7197 

0.5403 

Baseflow 

0.3688E-01 

0.8529E-02 

0.2982E-02 

0.2417E-02 

0.1270E-01 

Sediment 

0.1121E-01 

0.1793E-01 

0.1796E-02 

0.1152E-01 

0.1061E-01 

Total 

2.588 

1.509 

0.3092 

2.008 

1.604 

ORGN Sediment 

4.233 

7.403 

0.7436 

4.478 

4.214 

Total N Loss (Ib/a) 

19.22 

17.48 

3.159 

12.89 

13.19 

P04 Loss 

Surface 

0.4667 

0.6221 

0.1754 

0.5119 

0.4440 

Interflow 

0.1692 

0.2315 

0.1270 

0.3033 

0.2077 

Baseflow 

0.6353E-03 

0.2532E-05 

0.4185E-06 

0.6229E-06 

0.1597E-03 

Sediment 

0.4795E-01 

0.8974E-01 

0.9232E-02 

0.5822E-01 

0.5129E-01 

Total 

0.6844 

0.9433 

0.3117 

0.8734 

0.7032 

ORGP Sediment 

1.126 

1.980 

0.1987 

1.188 

1.123 

Total P Loss (Ib/a) 

1.811 

2.924 

0.5103 

2.061 

1.827 

Atm Depn. N03 (Ib/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (Ib/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

100.1 

99.93 

103.4 

103.4 

101.7 

Nitrate appln.(lb/a) 

29.30 

29.26 

30.41 

30.41 

29.84 

ORGN appln.(lb/a) 

17.04 

17.04 

17.04 

17.04 

17.04 

Total N appln.(lb/a) 

146.4 

146.2 

150.8 

150.8 

148.6 

P04-P appln.(lb/a) 

30.96 

31.72 

32.98 

32.98 

32.16 

ORGP appln.(lb/a) 

4.590 

4.590 

4.590 

4.590 

4.590 

Total P appln.(lb/a) 

35.55 

36.31 

37.57 

37.57 

36.75 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2800E-01 

0.2400E-01 

0.7000E-02 

0.2600E-01 

0.2125E-01 

Upper 

76.05 

78.81 

92.23 

76.42 

80.88 

Lower 

40.02 

38.53 

35.85 

47.04 

40.36 

Total 

116.1 

117.4 

128.1 

123.5 

121.3 

Phosphorus 

Surface 

0.2100E-01 

0.1800E-01 

0.5000E-02 

0.2000E-01 

0.1600E-01 

Upper 

19.92 

19.93 

19.92 

19.91 

19.92 

Lower 

3.753 

3.752 

1.477 

1.819 

2.700 

Total 

23.70 

23.70 

21.40 

21.74 

22.64 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.523 

1.527 

1.544 

1.525 

1.530 

Upper 

16.71 

13.91 

0.5372 

16.31 

11.87 

Lower 

21.06 

22.38 

25.06 

13.86 

20.59 

Total 

39.29 

37.82 

27.14 

31.70 

33.99 

Phosphorus 

Surface 

1.230 

1.232 

1.246 

1.231 

1.235 

Upper 

0.1046 

0.9227E-01 

0.9982E-01 

0.1092 

0.1015 

Lower 

0.0000 

0.0000 

2.275 

1.933 

1.052 

Total 

1.335 

1.324 

3.620 

3.273 

2.388 

Other Fluxes-Ib/ac 

N Mineralization 

12.83 

12.29 

13.35 

14.06 

13.13 

P Mineralization 

2.681 

2.543 

1.994 

2.178 

2.349 

Denitrification 

1.975 

0.7112 

0.3953 

1.023 

1.026 

N Immobilization 

22.03 

22.35 

23.29 

23.71 

22.85 

P Immobilization 

11.74 

12.29 

11.04 

13.31 

12.09 

D2 


Appendix D 



AGCHEM Summary for Alternative No. 1 for the Shenandoah Basin (Low-Till), PERLND 193 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

31.42 

45.43 

41.84 

35.51 

38.55 

Runoff (in) 

Surface 

1.447 

7.420 

7.087 

5.296 

5.313 

Interflow 

1.479 

3.951 

3.365 

2.152 

2.737 

Baseflow 

4.788 

7.142 

6.262 

5.450 

5.911 

Total 

7.713 

18.51 

16.72 

12.90 

13.96 

Sediment Loss (t/a) 

0.7836E-01 

0.5170 

0.8060 

0.5530 

0.4886 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.1252 

0.6352 

0.5142 

0.3014 

0.3940 

Interflow 

2.226 

12.35 

10.27 

3.149 

6.999 

Baseflow 

0.3410 

0.7292 

0.4239 

0.2591 

0.4383 

Total 

2.692 

13.72 

11.21 

3.710 

7.833 

NH3 Loss 

Surface 

0.3909 

1.060 

1.270 

0.5741 

0.8238 

Interflow 

0.4488 

0.6383 

0.9347 

0.3315 

0.5883 

Baseflow 

0.1404E-02 

0.1794E-02 

0.1246E-02 

0.1080E-02 

0.1381E-02 

Sediment 

0.8534E-03 

0.5845E-02 

0.8727E-02 

0.6342E-02 

0.5442E-02 

Total 

0.8420 

1.706 

2.215 

0.9131 

1.419 

ORGN Sediment 

0.3091 

2.155 

3.413 

2.340 

2.054 

Total N Loss (Ib/a) 

3.843 

17.58 

16.84 

6.962 

11.31 

P04 Loss 

Surface 

0.1973 

0.9302 

1.003 

0.5963 

0.6817 

Interflow 

0.1075 

0.4332 

0.3148 

0.1721 

0.2569 

Baseflow 

0.3229E-06 

0.5080E-06 

0.2757E-06 

0.2945E-06 

0.3503E-06 

Sediment 

0.4018E-02 

0.2859E-01 

0.4412E-01 

0.3180E-01 

0.2713E-01 

Total 

0.3087 

1.392 

1.362 

0.8002 

0.9657 

ORGP Sediment 

0.8236E-01 

0.5745 

0.9141 

0.6252 

0.5490 

Total P Loss (Ib/a) 

0.3911 

1.967 

2.276 

1.425 

1.515 

Atm Depn. N03 (Ib/a) 

5.997 

7.040 

6.498 

6.097 

6.408 

Atm Depn. NH4 (Ib/a) 

1.852 

2.618 

2.130 

1.833 

2.108 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

103.4 

101.3 

94.70 

102.5 

100.5 

Nitrate appln.(lb/a) 

30.41 

29.72 

27.51 

30.10 

29.44 

ORGN appln.(lb/a) 

17.04 

17.04 

17.04 

17.04 

17.04 

Total N appln.(lb/a) 

150.8 

148.1 

139.3 

149.6 

146.9 

P04-P appln.(Ib/a) 

32.98 

32.98 

27.94 

32.98 

31.72 

ORGP appln.(lb/a) 

4.590 

4.590 

4.590 

4.590 

4.590 

Total P appln.(lb/a) 

37.57 

37.57 

32.53 

37.57 

36.31 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1800E-01 

0.4500E-01 

0.2000E-01 

0.2400E-01 

0.2675E-01 

Upper 

88.78 

72.67 

70.39 

92.45 

81.07 

Lower 

39.96 

40.63 

35.64 

30.01 

36.56 

Total 

128.8 

113.3 

106.1 

122.5 

117.7 

Phosphorus 

Surface 

0.1400E-01 

0.3400E-01 

0.1500E-01 

0.1600E-01 

0.1975E-01 

Upper 

19.91 

19.90 

19.94 

19.95 

19.93 

Lower 

1.456 

1.691 

0.9290 

1.004 

1.270 

Total 

21.38 

21.62 

20.88 

20.97 

21.22 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.533 

1.505 

1.531 

1.527 

1.524 

Upper 

3.986 

20.05 

22.34 

0.3154 

11.67 

Lower 

20.95 

20.28 

25.26 

30.90 

24.35 

Total 

26.47 

41.83 

49.13 

32.74 

37.54 

Phosphorus 

Surface 

1.237 

1.217 

1.236 

1.234 

1.231 

Upper 

0.1181 

0.1222 

0.9433E-01 

0.6618E-01 

0.1002 

Lower 

2.297 

2.061 

2.823 

2.748 

2.482 

Total 

3.652 

3.400 

4.153 

4.049 

3.813 

Other Fluxes-Ib/ac 

N Mineralization 

14.05 

11.89 

10.97 

13.07 

12.49 

P Mineralization 

2.031 

2.239 

1.878 

1.787 

1.984 

Denitrification 

0.5363 

0.9221 

0.6157 

0.4097 

0.6209 

N Immobilization 

23.04 

23.11 

20.78 

23.20 

22.53 

P Immobilization 

12.69 

15.89 

7.619 

12.07 

12.07 

Appendix D 


AGCHEM Summary for Alternative No. 1 for the Shenandoah Basin (HAY), PERLND 196 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

43.65 

42.99 

30.45 

43.61 

40.17 

Runoff (in) 

Surface 

9.811 

7.853 

1.582 

6.630 . 

6.469 

Interflow 

2.438 

2.491 

0.8270 

2.157 

1.978 

Baseflow 

7.159 

5.821 

4.034 

5.650 

5.666 

Total 

19.41 

16.16 

6.444 

14.a 

14.11 

Sediment Loss (t/a) 

0.7640 

0.7510 

0.1110 

0.6820 

0.5770 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.5828 

0.3088 

0.8429E-01 

0.3184 

0.3236 

Interflow 

1.027 

0.7944 

0.4079 

0.9141 

0.7859 

Baseflow 

3.229 

1.735 

1.282 

2.215 

2.115 

Total 

4.838 

2.838 

1.774 

3.447 

3.224 

NH3 Loss 

Surface 

0.8515 

0.3123 

0.1464 

0.3007 

0.4027 

Interflow 

0.5004E-01 

0.6143E-01 

0.4895E-01 

0.3534E-01 

0.4894E-01 

Baseflow 

0.3678E-01 

0.8701E-02 

0.2973E-02 

0.261IE-02 

0.1277E-01 

Sediment 

0.8097E-02 

0.7687E-02 

0.1182E-02 

0.7179E-02 

0.6036E-02 

Total 

0.9464 

0.3902 

0.1995 

0.3459 

0.4705 

ORGN Sediment 

2.117 

2.099 

0.3051 

1.894 

1.604 

Total N Loss (Ib/a) 

7.901 

5.327 

2.279 

5.687 

5.299 

P04 Loss 

Surface 

1.221 

0.4964 

0.3754 

0.6516 

0.6861 

Interflow 

0.1517 

0.1095 

0.4109E-01 

0.1696 

0.1180 

Baseflow 

0.6425E-03 

0.3938E-05 

0.7112E-06 

0.2610E-06 

0.1619E-03 

Sediment 

0.3849E-01 

0.3862E-01 

0.6647E-02 

0.3837E-01 

0.3053E-01 

Total 

1.412 

0.6446 

0.4232 

0.8595 

0.8348 

ORGP Sediment 

0.5689 

0.5838 

0.8416E-01 

0.5153 

0.4380 

Total P Loss (Ib/a) 

1.981 

1.228 

0.5073 

1.375 

1.273 

Atm Depn. N03 (Ib/a) 

6.639 

6.417 

6.019 

6.635 

6.428 

Atm Depn. NH4 (Ib/a) 

2.245 

2.070 

1.775 

2.204 

2.074 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 
Ammonia appln.(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

23.87 

23.87 

23.87 

23.87 

23.87 

Nitrate appln.(lb/a) 

7.320 

7.320 

7.320 

7.320 

7.320 

ORGN appln.(lb/a) 

2.640 

2.640 

2.640 

2.640 

2.640 

Total N appln.(lb/a) 

33.83 

33.83 

33.83 

33.83 

33.83 

P04-p appln.(lb/a) 

25.14 

25.14 

25.14 

25.14 

25.14 

ORGP appln.(Ib/a) 

1.020 

1.020 

1.020 

1.020 

1.020 

Total P appln.(lb/a) 

26.16 

26.16 

26.16 

26.16 

26.16 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.4000E-02 

0.4000E-02 

0.1000E-02 

0.6000E-02 

0.3750E-02 

Upper 

30.05 

30.46 

30.50 

29.80 

30.20 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

42.89 

43.30 

43.34 

42.64 

43.04 

Phosphorus 

Surface 

0.9000E-02 

0.8000E-02 

0.2000E-02 

0.1100E-01 

0.7500E-02 

Upper 

15.94 

15.94 

15.94 

15.93 

15.94 

Lower 

3.002 

3.001 

2.837 

1.431 

2.568 

Total 

18.95 

18.95 

18.78 

17.37 

18.51 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4959 

0.4959 

0.4994 

0.4945 

0.4964 

Upper 

6.684 

6.275 

6.227 

6.915 

6.525 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

7.179 

6.771 

6.726 

7.409 

7.021 

Phosphorus 

Surface 

0.9922 

0.9923 

0.9988 

0.9891 

0.9931 

Upper 

0.8367E-01 

0.7382E-01 

0.7985E-01 

0.8734E-01 

0.8117E-01 

Lower 

0.0000 

0.0000 

0.1649 

1.570 

0.4337 

Total 

1.076 

1.066 

1.243 

2.647 

1.508 

Other Fluxes-Ib/ac 

N Mineralization 

18.91 

18.90 

18.74 

18.61 

18.79 

P Mineralization 

2.296 

2.311 

1.993 

1.776 

2.094 

Denitrification 

4.025 

3.128 

3.260 

3.915 

3.582 

N Immobilization 

7.312 

8.104 

8.008 

8.015 

7.860 

P Immobilization 

9.665 

10.74 

8.042 

9.695 

9.536 

D4 


Appendix D 



AGCHEM Sumnary for Alternative No. 1 for the Shenandoah Basin (HAY), PERLND 196 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

Runoff (in) 

31.42 

45.43 

41.84 

35.51 

38.55 

Surface 

1.105 

7.414 

6.983 

4.666 

5.042 

Interflow 

0.8380 

2.648 

2.215 

1.403 

1.776 

Baseflow 

4.515 

6.778 

6.172 

5.363 

5.707 

Total 

6.459 

16.84 

15.37 

11.43 

12.53 

Sediment Loss (t/a) 
Nutrient Loss (lb/a) 

0.3172E-01 

0.3910 

0.6190 

0.2550 

0.3242 

N03 Loss 

Surface 

0.8179E-01 

0.7545 

0.3702 

0.3388 

0.3863 

Interflow 

0.3157 

0.8154 

1.002 

0.7456 

0.7197 

Baseflow 

1.691 

2.562 

1.972 

1.752 

1.994 

Total 

2.089 

4.132 

3.344 

2.836 

3.100 

NH3 Loss 

Surface 

0.1209 

1.443 

0.4056 

0.4874 

0.6142 

Interflow 

0.2652E-01 

0.7031E-01 

0.5984E-01 

0.3758E-01 

0.4856E-01 

Baseflow 

0.1461E-02 

0.1815E-02 

0.1432E-02 

0.1240E-02 

0.1487E-02 

Sediment 

0.2801E-03 

0.4565E-02 

0.6504E-02 

0.2901E-02 

0.3563E-02 

Total 

0.1492 

1.520 

0.4733 

0.5291 

0.6679 

ORGN Sediment 

0.7136E-01 

1.063 

1.724 

0.6977 

0.8890 

Total N Loss (lb/a) 

P04 Loss 

2.309 

6.715 

5.542 

4.063 

4.657 

Surface 

0.1806 

1.430 

0.7649 

1.068 

0.8609 

Interflow 

0.4141E-01 

0.9248E-01 

0.7547E-01 

0.5070E-01 

0.6502E-01 

Baseflow 

0.1068E-06 

0.6644E-07 

0.6761E-07 

0.6641E-07 

0.7681E-07 

Sediment 

0.1390E-02 

0.2421E-01 

0.3383E-01 

0.1618E-01 

0.1890E-01 

Total 

0.2234 

1.547 

0.8742 

1.135 

0.9449 

ORGP Sediment 

0.1911E-01 

0.2934 

0.4769 

0.1897 

0.2448 

Total P Loss (lb/a) 

0.2426 

1.840 

1.351 

1.325 

1.190 

Atm Oepn. N03 (lb/a) 

5.997 

7.040 

6.498 

6.097 

6.408 

Atm Depn. NH4 (lb/a) 

1.852 

2.618 

2.130 

1.833 

2.108 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (lb/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

23.87 

23.12 

23.87 

23.35 

23.55 

Nitrate appln.(lb/a) 

7.320 

7.070 

7.320 

7.145 

7.214 

ORGN appln.(lb/a) 

2.640 

2.640 

2.640 

2.640 

2.640 

Total N appln.(lb/a) 

33.83 

32.83 

33.83 

33.13 

33.40 

P04-p appln.(lb/a) 

25.14 

24.31 

25.14 

24.56 

24.79 

ORGP appln.(lb/a) 

1.020 

1.020 

1.020 

1.020 

1.020 

Total P appln.(lb/a) 

Plant Uptake (lb/a) 

26.16 

25.33 

26.16 

25.58 

25.81 

Nitrogen 

Surface 

0.4000E-02 

0.1000E-01 

0.4000E-02 

0.4000E-02 

0.5500E-02 

Upper 

31.48 

29.49 

30.10 

29.47 

30.14 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

Phosphorus 

44.32 

42.33 

42.94 

42.31 

42.98 

Surface 

0.7000E-02 

0.1900E-01 

0.8000E-02 

0.8000E-02 

0.1050E-01 

Upper 

15.92 

15.92 

15.94 

15.96 

15.94 

Lower 

0.9130 

0.8030 

0.6730 

0.6020 

0.7478 

Total 

16.84 

16.74 

16.63 

16.57 

16.69 

Deficit (lb/a) 

Nitrogen 

Surface 

0.4963 

0.4898 

0.4959 

0.4960 

0.4945 

Upper 

5.249 

7.231 

6.622 

7.269 

6.593 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

5.745 

7.721 

7.118 

7.765 

7.087 

Phosphorus 

Surface 

0.9937 

0.9814 

0.9926 

0.9929 

0.9901 

Upper 

0.9447E-01 

0.9779E-01 

0.7546E-01 

0.5295E-01 

0.8017E-01 

Lower 

2.090 

2.198 

2.328 

2.399 

2.254 

Total 

3.178 

3.278 

3.396 

3.445 

3.324 

Other Fluxes-Ib/ac 

N Mineralization 

19.03 

18.89 

18.98 

18.79 

18.92 

P Mineralization 

1.597 

1.632 

1.602 

1.485 

1.579 

Denitrification 

3.664 

4.061 

3.612 

3.606 

3.736 

N Immobilization 

8.094 

7.771 

8.246 

7.922 

8.008 

P Immobilization 

9.859 

9.637 

8.462 

6.679 

8.659 


Appendix D 


D5 


AGCHEM Summary for Alternative No. 2 for the Shenandoah Basin (Low-Till), PERLND 203 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

39.78 

36.84 

27.99 

37.57 

35.54 

Runoff (in) 

Surface 

7.438 

3.413 

1.345 

3.533 

3.932 

Interflow 

3.401 

2.963 

1.350 

2.505 

2.555 

Baseflow 

6.670 

5.437 

4.426 

4.937 

5.368 

Total 

17.51 

11.81 

7.121 

10.97 

11.85 

Sediment Loss (t/a) 

0.9900 

0.2920 

0.1140 

0.3020 

0.4245 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.6559 

0.2761 

0.1573 

0.2470 

0.3341 

Interflow 

7.511 

8.706 

3.786 

6.433 

6.609 

Baseflow 

2.065 

1.544 

2.202 

5.419 

2.807 

Total 

10.23 

10.53 

6.144 

12.10 

9.751 

NH3 Loss 

Surface 

2.754 

0.9119 

0.4055 

0.8079 

1.220 

Interflow 

0.8414 

1.152 

0.3974 

1.183 

0.8934 

Baseflow 

0.3297E-01 

0.7259E-02 

0.2811E-02 

0.1952E-02 

0.1125E-01 

Sediment 

0.1262E-01 

0.3059E-02 

0.1201E-02 

0.3369E-02 

0.5062E-02 

Total 

3.641 

2.074 

0.8070 

1.997 

2.130 

ORGN Sediment 

4.221 

1.243 

0.4838 

1.282 

1.807 

Total N Loss (Ib/a) 

18.09 

13.84 

7.435 

15.38 

13.69 

P04 Loss 

Surface 

1.061 

0.6568 

0.2362 

0.5595 

0.6284 

Interflow 

0.2108 

0.3321 

0.1781 

0.4065 

0.2819 

Baseflow 

0.5432E-03 

0.4751E-06 

0.3639E-06 

0.7453E-06 

0.1362E-03 

Sediment 

0.5288E-01 

0.1542E-01 

0.6099E-02 

0.1727E-01 

0.2292E-01 

Total 

1.325 

1.004 

0.4204 

0.9833 

0.9332 

ORGP Sediment 

1.138 

0.3389 

0.1305 

0.3446 

0.4880 

Total P Loss (Ib/a) 

2.463 

1.343 

0.5510 

1.328 

1.421 

Atm Depn. N03 (Ib/a) 

6.464 

6.154 

5.854 

6.257 

6.182 

Atm Depn. NH4 (Ib/a) 

2.118 

1.894 

1.670 

1.964 

1.911 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

88.79 

88.92 

87.86 

90.61 

89.04 

Nitrate appln.(lb/a) 

17.01 

17.05 

16.70 

17.61 

17.09 

ORGN appln.(lb/a) 

54.54 

54.54 

54.54 

54.54 

54.54 

Total N appln.(lb/a) 

160.3 

160.5 

159.1 

162.8 

160.7 

P04-P appln.(lb/a) 

30.67 

30.75 

31.76 

31.68 

31.21 

ORGP appln.(lb/a) 

14.70 

14.70 

14.70 

14.70 

14.70 

Total P appln.(lb/a) 

45.37 

45.45 

46.46 

46.38 

45.91 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.4500E-01 

0.2500E-01 

0.7000E-02 

0.2800E-01 

0.2625E-01 

Upper 

89.89 

92.26 

92.26 

92.15 

91.64 

Lower 

33.35 

41.27 

39.32 

60.99 

43.73 

Total 

123.3 

133.6 

131.6 

153.2 

135.4 

Phosphorus 

Surface 

0.3400E-01 

0.1900E-01 

0.5000E-02 

0.2100E-01 

0.1975E-01 

Upper 

22.09 

22.28 

22.32 

22.30 

22.25 

Lower 

1.334 

1.363 

1.100 

2.240 

1.509 

Total 

23.46 

23.67 

23.43 

24.55 

23.78 

Deficit (Ib/a) 

Nitrogen 

Surface 

1.506 

1.526 

1.544 

1.523 

1.525 

Upper 

2.860 

0.4913 

0.4754 

0.5812 

1.102 

Lower 

27.75 

19.63 

21.60 

0.0000 

17.24 

Total 

32.11 

21.65 

23.62 

2.104 

19.87 

Phosphorus 

Surface 

1.367 

1.382 

1.396 

1.380 

1.381 

Upper 

0.3326 

0.1358 

0.1021 

0.1176 

0.1720 

Lower 

2.870 

2.839 

3.102 

1.962 

2.693 

Total 

4.569 

4.357 

4.600 

3.460 

4.247 

Other Fluxes-Ib/ac 

N Mineralization 

56.11 

69.68 

79.86 

82.29 

71.99 

P Mineralization 

1.924 

2.084 

1.906 

2.217 

2.033 

Denitrification 

1.879 

2.015 

3.365 

7.839 

3.774 

N Immobilization 

26.30 

30.25 

32.67 

32.16 

30.35 

P Immobilization 

5.328 

8.441 

6.636 

10.32 

7.681 


D6 


Appendix D 



AGCHEM Sunnary for Alternative No. 2 for the Shenandoah Basin (Low-Till), PERLNO 203 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

28.82 

38.09 

39.88 

28.66 

33.86 

Runoff (in) 

Surface 

1.932 

3.814 

4.912 

2.401 

3.265 

Interflow 

1.441 

2.476 

2.906 

1.419 

2.060 

Baseflow 

4.146 

5.137 

5.669 

4.391 

4.836 

Total 

7.519 

11.43 

13.49 

8.211 

10.16 

Sediment Loss (t/a) 

0.1710 

0.3710 

0.6860 

0.2850 

0.3782 

Nutrient Loss (Ib/a) 

N03 Loss 






Surface 

0.2456 

0.3786 

0.8641 

0.3170 

0.4513 

Interflow 

2.289 

10.20 

9.572 

2.880 

6.235 

Baseflow 

2.671 

2.594 

2.422 

0.8129 

2.125 

Total 

5.205 

13.17 

12.86 

4.010 

8.811 

NH3 Loss 

Surface 

0.6877 

2.459 

3.052 

0.7373 

1.734 

Interflow 

0.6644 

0.9607 

1.118 

0.7110 

0.8635 

Baseflow 

0.1226E-02 

0.1069E-02 

0.1024E-02 

0.9976E-03 

0.1079E-02 

Sediment 

0.2034E-02 

0.4908E-02 

0.8379E-02 

0.4258E-02 

0.4895E-02 

Total 

1.355 

3.425 

4.179 

1.454 

2.603 

ORGN Sediment 

0.7170 

1.567 

2.981 

1.224 

1.622 

Total N Loss (Ib/a) 

7.278 

18.16 

20.02 

6.688 

13.04 

P04 Loss 

Surface 

0.3653 

0.9229 

1.319 

0.7561 

0.8408 

Interflow 

0.1633 

0.2889 

0.3339 

0.1841 

0.2426 

Baseflow 

0.3018E-06 

0.4595E-06 

0.3959E-06 

0.3341E-06 

0.3728E-06 

Sediment 

0.9825E-02 

0.2123E-01 

0.3893E-01 

0.1951E-01 

0.2237E-01 

Total 

0.5384 

1.233 

1.692 

0.9597 

1.106 

ORGP Sediment 

0.1928 

0.4249 

0.8094 

0.3281 

0.4388 

Total P Loss (Ib/a) 

0.7312 

1.658 

2.501 

1.288 

1.545 

Atm Depn. N03 (Ib/a) 

5.703 

6.603 

6.329 

5.688 

6.081 

Atm Depn. NH4 (Ib/a) 

1.684 

2.303 

2.051 

1.537 

1.894 

Atm Depn. ORGN(lb/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

90.62 

90.65 

88.81 

90.44 

90.13 

Nitrate appln.(lb/a) 

17.62 

17.63 

17.02 

17.56 

17.46 

ORGN appln.(lb/a) 

54.54 

54.54 

54.54 

54.54 

54.54 

Total N appln.(lb/a) 

162.8 

162.8 

160.4 

162.5 

162.1 

P04-P appln.(lb/a) 

31.72 

31.76 

30.83 

31.76 

31.52 

ORGP appln.(lb/a) 

14.70 

14.70 

14.70 

14.70 

14.70 

Total P appln.(lb/a) 

46.42 

46.46 

45.53 

46.46 

46.22 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.2100E-01 

0.2500E-01 

0.3100E-01 

0.1000E-01 

0.2175E-01 

Upper 

92.17 

92.10 

85.92 

92.53 

90.68 

Lower 

60.96 

61.06 

50.61 

36.01 

52.16 

Total 

153.2 

153.2 

136.6 

128.6 

142.9 

Phosphorus 

Surface 

0.1500E-01 

0.1800E-01 

0.1900E-01 

0.7000E-02 

0.1475E-01 

Upper 

22.30 

22.28 

22.33 

22.35 

22.32 

Lower 

1.402 

1.624 

1.215 

0.9680 

1.302 

Total 

Deficit (Ib/a) 

23.72 

23.92 

23.56 

23.33 

23.63 

Nitrogen 

Surface 

1.530 

1.526 

1.520 

1.540 

1.529 

Upper 

0.6173 

0.6610 

6.803 

0.2757 

2.089 

Lower 

0.0000 

0.0000 

10.36 

24.90 

8.815 

Total 

2.148 

2.187 

18.68 

26.72 

12.43 

Phosphorus 

Surface 

1.386 

1.383 

1.381 

1.394 

1.386 

Upper 

0.1273 

0.1322 

0.9377E-01 

0.6556E-01 

0.1047 

Lower 

2.802 

2.578 

2.987 

3.234 

2.900 

Total 

4.315 

4.093 

4.462 

4.694 

4.391 

Other Fluxes-Ib/ac 

N Mineralization 

82.20 

91.41 

54.54 

76.50 

76.16 

P Mineralization 

1.989 

2.105 

1.900 

1.781 

1.944 

Denitrification 

4.438 

5.068 

3.526 

1.663 

3.674 

N Immobilization 

32.94 

35.36 

25.91 

32.74 

31.74 

P Immobilization 

7.427 

12.41 

8.031 

6.684 

8.638 


Appendix D 



AGCHEM Summary for Alternative No. 2 for the Shenandoah Basin (HAY), PERLND 206 



1984 

1985 

1986 

1987 

SUM/AVER 

Rainfall (in) 

39.78 

36.84 

27.99 

37.57 

35.54 

Runoff (in) 

Surface 

6.998 

3.215 

1.060 

2.775 

3.512 

Interflow 

2.458 

1.945 

0.7600 

1.580 

1.686 

Baseflow 

6.566 

5.063 

4.028 

4.531 

5.047 

Total 

16.02 

10.22 

5.848 

8.886 

10.24 

Sediment Loss (t/a) 

0.7220 

0.2190 

0.6218E-01 

0.1660 

0.2923 

Nutrient Loss (Ib/a) 

NQ3 Loss 

Surface 

0.4636 

0.1517 

0.9848E-01 

0.1472 

0.2152 

Interflow 

1.100 

0.3814 

0.4415 

0.8085 

0.6829 

Baseflow 

2.905 

1.385 

1.074 

1.604 

1.742 

Total 

4.469 

1.918 

1.614 

2.560 

2.640 

NH3 Loss 

Surface 

0.7725 

0.1454 

0.2059 

0.2059 

0.3324 

Interflow 

0.5704E-01 

0.4189E-01 

0.5666E-01 

0.5688E-01 

0.5312E-01 

Baseflow 

0.3273E-01 

0.7040E-02 

0.2679E-02 

0.1830E-02 

0.1107E-01 

Sediment 

0.7888E-02 

0.2140E-02 

0.6703E-03 

0.1668E-02 

0.3092E-02 

Total 

0.8702 

0.1965 

0.2659 

0.2662 

0.3997 

ORGN Sediment 

2.015 

0.5972 

0.1666 

0.4434 

0.8056 

Total N Loss (Ib/a) 

7.354 

2.712 

2.046 

3.270 

3.846 

P04 Loss 

Surface 

0.8015 

0.1602 

0.4143 

0.3912 

0.4418 

Interflow 

0.1561 

0.1039 

0.5274E-01 

0.1647 

0.1194 

Baseflow 

0.5453E-03 

0.1553E-06 

0.1319E-06 

0.2898E-06 

0.1365E-03 

Sediment 

0.3841E-01 

0.1083E-01 

0.3879E-02 

0.8807E-02 

0.1548E-01 

Total 

0.9965 

0.2749 

0.4709 

0.5648 

0.5768 

ORGP Sediment 

0.5457 

0.1651 

0.4549E-01 

0.1197 

0.2190 

Total P Loss (Ib/a) 

1.542 

0.4400 

0.5164 

0.6845 

0.7957 

Atm Depn. N03 (Ib/a) 

6.464 

6.154 

5.854 

6.257 

6.182 

Atm Depn. NH4 (Ib/a) 

2.118 

1.894 

1.670 

1.964 

1.911 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

26.11 

26.11 

26.11 

26.11 

26.11 

Nitrate appln.(lb/a) 

6.590 

6.590 

6.590 

6.590 

6.590 

ORGN appln.(lb/a) 

8.760 

8.760 

8.760 

8.760 

8.760 

Total N appln.(lb/a) 

41.46 

41.46 

41.46 

41.46 

41.46 

P04-p appln.(lb/a) 

25.08 

25.08 

25.08 

25.08 

25.08 

ORGP appln.(lb/a) 

3.360 

3.360 

3.360 

3.360 

3.360 

Total P appln.(lb/a) 

28.44 

28.44 

28.44 

28.44 

28.44 

Plant Uptake (Ib/a) 

Nitrogen 

Surface 

0.1000E-01 

0.4000E-02 

0.1000E-02 

0.6000E-02 

0.5250E-02 

Upper 

32.56 

35.39 

34.23 

32.28 

33.61 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

45.40 

48.23 

47.07 

45.12 

46.45 

Phosphorus 

Surface 

0.1600E-01 

0.7000E-02 

0.2000E-02 

0.1000E-01 

0.8750E-02 

Upper 

15.95 

15.94 

15.94 

15.93 

15.94 

Lower 

1.426 

0.8360 

0.8550 

1.684 

1.200 

Total 

17.39 

16.78 

16.80 

17.62 

17.15 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4907 

0.4966 

0.4991 

0.4941 

0.4951 

Upper 

4.156 

1.316 

2.485 

4.426 

3.096 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

4.646 

1.813 

2.984 

4.920 

3.591 

Phosphorus 

Surface 

0.9846 

0.9937 

0.9984 

0.9905 

0.9918 

Upper 

0.7094E-01 

0.7296E-01 

0.7290E-01 

0.8399E-01 

0.7520E-01 

Lower 

1.576 

2.165 

2.146 

1.318 

1.801 

Total 

2.632 

3.232 

3.218 

2.392 

2.869 

Other Fluxes-Ib/ac 

N Mineralization 

21.71 

22.22 

21.74 

21.36 

21.76 

P Mineralization 

1.783 

1.761 

1.581 

1.857 

1.745 

Denitrification 

4.110 

2.940 

2.899 

3.727 

3.419 

N Immobilization 

8.689 

9.521 

9.227 

9.329 

9.191 

P Immobilization 

9.639 

9.899 

6.976 

11.55 

9.516 


D8 


Appendix D 




AGCHEM Summary for Alternative No. 2 for the Shenandoah Basin (HAY), PERLND 206 



1988 

1989 

1990 

1991 

SUM/AVER 

Rainfall (in) 

28.82 

38.09 

39.88 

28.66 

33.86 

Runoff (in) 

Surface 

1.269 

3.090 

4.584 

2.126 

2.767 

Interflow 

0.8230 

1.639 

2.004 

0.9720 

1.359 

Baseflow 

3.928 

4.760 

5.488 

4.383 

4.640 

Total 

6.021 

9.490 

12.08 

7.481 

8.767 

Sediment Loss (t/a) 

0.7286E-01 

0.1980 

0.5660 

0.2000 

0.2592 

Nutrient Loss (Ib/a) 

N03 Loss 

Surface 

0.8987E-01 

0.3364 

0.1923 

0.1885 

0.2018 

Interflow 

0.2672 

0.6050 

0.6963 

0.5548 

0.5308 

Baseflow 

1.481 

2.162 

1.961 

1.370 

1.743 

Total 

NH3 Loss 

1.839 

3.103 

2.850 

2.113 

2.476 

Surface 

0.1151 

0.5341 

0.2630 

0.2966 

0.3022 

Interflow 

0.3032E-01 

0.5279E-01 

0.4426E-01 

0.2834E-01 

0.3893E-01 

Baseflow 

0.1141E-02 

0.1151E-02 

0.1180E-02 

0.9205E-03 

0.1098E-02 

Sediment 

0.7379E-03 

0.2377E-02 

0.5939E-02 

0.2440E-02 

0.2873E-02 

Total 

0.1473 

0.5904 

0.3143 

0.3283 

0.3451 

ORGN Sediment 

0.1916 

0.5323 

1.598 

0.5520 

0.7185 

Total N Loss (Ib/a) 

2.177 

4.226 

4.762 

2.994 

3.540 

P04 Loss 

Surface 

0.1807 

0.7107 

0.6222 

0.7193 

0.5582 

Interflow 

0.4059E-01 

0.7540E-01 

0.7230E-01 

0.3700E-01 

0.5632E-01 

Baseflow 

0.1160E-06 

0.5811E-07 

0.5335E-07 

0.6895E-07 

0.7410E-07 

Sediment 

0.3765E-02 

0.1248E-01 

0.311IE-01 

0.1378E-01 

0.1528E-01 

Total 

0.2251 

0.7986 

0.7256 

0.7701 

0.6299 

ORGP Sediment 

0.5157E-01 

0.1458 

0.4421 

0.1477 

0.1968 

Total P Loss (Ib/a) 

0.2766 

0.9445 

1.168 

0.9179 

0.8268 

Atm Depn. N03 (Ib/a) 

5.703 

6.603 

6.329 

5.688 

6.081 

Atm Depn. NH4 (Ib/a) 

1.684 

2.303 

2.051 

1.537 

1.894 

Atm Depn. ORGN(Ib/a) 

0.6068 

0.6070 

0.6070 

0.6070 

0.6069 

Atm Depn. P04 (Ib/a) 

0.1427 

0.1431 

0.1431 

0.1431 

0.1430 

Atm Depn. ORGP(lb/a) 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Ammonia appln.(lb/a) 

26.11 

25.66 

25.45 

25.64 

25.71 

Nitrate appln.(lb/a) 

6.590 

6.440 

6.371 

6.433 

6.459 

ORGN appln.(lb/a) 

8.760 

8.760 

8.760 

8.760 

8.760 

Total N appln.(lb/a) 

41.46 

40.86 

40.58 

40.83 

40.93 

P04-p appln.(lb/a) 

25.08 

24.58 

24.36 

24.56 

24.65 

ORGP appln.(lb/a) 

3.360 

3.360 

3.360 

3.360 

3.360 

Total P appln.(lb/a) 

Plant Uptake (Ib/a) 

28.44 

27.94 

27.72 

27.92 

28.01 

Nitrogen 

Surface 

0.6000E-02 

0.7000E-02 

0.7000E-02 

0.1000E-02 

0.5250E-02 

Upper 

32.62 

33.90 

33.43 

32.48 

33.11 

Lower 

12.84 

12.84 

12.84 

12.84 

12.84 

Total 

45.46 

46.74 

46.27 

45.32 

45.95 

Phosphorus 

Surface 

0.1000E-01 

0.1100E-01 

0.1000E-01 

0.3000E-02 

0.8500E-02 

Upper 

15.93 

15.92 

15.95 

15.97 

15.94 

Lower 

0.9660 

0.8310 

0.7190 

0.5790 

0.7737 

Total 

16.90 

16.76 

16.68 

16.55 

16.72 

Deficit (Ib/a) 

Nitrogen 

Surface 

0.4945 

0.4937 

0.4931 

0.4990 

0.4951 

Upper 

4.102 

2.813 

3.279 

4.234 

3.607 

Lower 

0.0000 

0.0000 

0.0000 

0.0000 

0.0000 

Total 

4.597 

3.306 

3.773 

4.733 

4.102 

Phosphorus 

Surface 

0.9908 

0.9892 

0.9901 

0.9978 

0.9920 

Upper 

0.9095E-01 

0.9446E-01 

0.6698E-01 

0.4683E-01 

0.7480E-01 

Lower 

2.036 

2.171 

2.282 

2.423 

2.228 

Total 

3.118 

3.255 

3.339 

3.467 

3.295 

Other Fluxes-Ib/ac 

N Mineralization 

22.42 

22.19 

21.80 

21.37 

21.94 

P Mineralization 

1.570 

1.679 

1.616 

1.455 

1.580 

Denitrification 

4.186 

4.773 

3.961 

3.551 

4.118 

N Immobilization 

9.683 

9.492 

9.310 

9.113 

9.399 

P Immobilization 

9.092 

10.62 

8.743 

5.982 

8.609 


Appendix D 


D9 


Per Acre Load Contributed from Each Land Use in Shenandoah Basin for Alternative No. 1 (Ib/ac) 


Segment 190 


< 

FOR 

HTC 

-Perv 

LTC 

nous — — 

PAS 

URB 

HAY 

:-Impervious-> 

ANML RES 

Total 

Load 

NH3 

84 

0.07395 

0.0 

2.588 

0.122 

0.518 

0.9464 

259.1135 

1.08 

0.531086 

85 

0.05978 

0.0 

1.509 

0.09196 

0.492 

0.3902 

253.8161 

0.969 

0.365575 

86 

0.03314 

0.0 

0.3092 

0.04404 

0.126 

0.1995 

143.745 

1.02 

0.16135 

87 

0.05784 

0.0 

2.008 

0.08217 

0.387 

0.3459 

255.5246 

1.05 

0.388635 

88 

0.03436 

0.0 

0.842 

0.04569 

0.09389 

0.1492 

160.2792 

0.992 

0.199187 

89 

0.06837 

0.0 

1.706 

0.09252 

0.33 

1.52 

256.1574 

1.13 

0.512235 

90 

0.06026 

0.0 

2.215 

0.08365 

0.371 

0.4733 

233.8467 

1.07 

0.411028 

91 

0.05155 

0.0 

0.9131 

0.07117 

0.248 

0.5291 

194.4052 

1.02 

0.28938 

MEAN 

0.054906 

0.0 

1.511287 

0.07915 

0.320736 

0.5692 

219.611 

1.041375 

0.35731 

N03 

84 

1.48 

0.0 

12.4 

6.12 

7.65 

4.838 

64.77838 

2.38 

4.182106 

85 

1.53 

0.0 

8.568001 

5.54 

6.76 

2.838 

63.45402 

2.13 

3.490686 

86 

0.862 

0.0 

2.106 

3.07 

3.29 

1.774 

35.93626 

2.23 

1.76155 

87 

1.26 

0.0 

6.405 

4.86 

6.04 

3.447 

63.88116 

2.32 

3.075145 

88 

0.847 

0.0 

2.692 

3.28 

3.49 

2.089 

40.0698 

2.18 

1.895582 

89 

1.37 

0.0 

13.72 

5.78 

6.87 

4.132 

64.03936 

2.47 

4.011399 

90 

1.43 

0.0 

11.21 

5.29 

6.33 

3.344 

58.46167 

2.35 

3.612426 

91 

1.21 

0.0 

3.71 

4.26 

4.92 

2.836 

48.6013 

2.25 

2.56087 

MEAN 

1.248625 

0.0 

7.601376 

4.775 

5.668751 

3.16225 

54.90275 

2.28875 

3.073721 

ORGN 

84 

0.64183 

0.0 

4.233 

1.63611 

3.5616 

2.117 

1554.681 

3.39836 

2.19673 

85 

0.44149 

0.0 

7.403 

1.113 

3.45401 

2.099 

1522.896 

3.06446 

2.185583 

86 

0.139496 

0.0 

0.7436 

0.42294 

0.66038 

0.3051 

862.4703 

3.21286 

0.717579 

87 

0.39326 

0.0 

4.478 

0.94976 

2.62297 

1.894 

1533.148 

3.33529 

1.837568 

88 

0.104251 

0.0 

0.3091 

0.40439 

0.359499 

0.07136 

961.6753 

3.13495 

0.653451 

89 

0.45633 

0.0 

2.155 

0.99799 

2.03679 

1.063 

1536.945 

3.55789 

1.574098 

90 

0.368032 

0.0 

3.413 

0.91266 

2.44118 

1.724 

1403.08 

3.37239 

1.653506 

91 

0.322399 

0.0 

2.34 

0.8162 

1.52852 

0.6977 

1166.431 

3.23883 

1.244273 

MEAN 

0.358386 

0.0 

3.134337 

0.906631 

2.083118 

1.246395 

1317.666 

3.289379 

1.507848 


TN 


84 

2.19578 

0.0 

19.22 

7.87811 

11.7296 

7.901 

2267.243 

6.85836 

85 

2.03127 

0.0 

17.48 

6.74496 

10.70601 

5.327 

2220.891 

6.16346 

86 

1.034636 

0.0 

3.159 

3.53698 

4.07638 

2.279 

1257.769 

6.46286 

87 

1.7111 

0.0 

12.89 

5.89193 

9.04997 

5.687 

2235.841 

6.70529 

88 

0.985611 

0.0 

3.843 

3.73008 

3.943389 

2.309 

1402.443 

6.30695 

89 

1.8947 

0.0 

17.58 

6.87051 

9.236791 

6.715 

2241.378 

7.15789 

90 

1.858292 

0.0 

16.84 

6.28631 

9.14218 

5.542 

2046.159 

6.79239 

91 

1.583949 

0.0 

6.962 

5.14737 

6.69652 

4.063 

1701.045 

6.50883 

MEAN 

1.661917 

0.0 

12.24675 

5.760781 

8.072605 

4.977875 

1921.596 

6.619503 

P04 

84 

0.05055 

0.0 

0.6844 

0.0749 

0.471 

1.412 

64.77838 

0.481 

85 

0.02645 

0.0 

0.9433 

0.05413 

0.461 

0.6446 

63.45402 

0.433 

86 

0.00938 

0.0 

0.3117 

0.02004 

0.07753 

0.4232 

35.93626 

0.454 

87 

0.02937 

0.0 

0.8734 

0.04623 

0.346 

0.8595 

63.88116 

0.471 

88 

0.005542 

0.0 

0.3087 

0.01921 

0.03386 

0.2234 

40.0698 

0.443 

89 

0.03351 

0.0 

1.392 

0.04997 

0.261 

1.547 

64.03936 

0.503 

90 

0.02245 

0.0 

1.362 

0.04503 

0.319 

0.8742 

58.46167 

0.477 

91 

0.02436 

0.0 

0.8002 

0.03794 

0.194 

1.135 

48.6013 

0.458 

MEAN 

0.025202 

0.0 

0.834463 

0.043431 

0.270424 

0.889863 

54.90275 

0.465 

ORGP 

84 

0.09169 

0.0 

1.126 

0.23373 

0.5088 

0.5689 

259.1135 

0.48548 

85 

0.06307 

0.0 

1.98 

0.159 

0.49343 

0.5838 

253.8161 

0.43778 

86 

0.019928 

0.0 

0.1987 

0.06042 

0.09434 

0.08416 

143.745 

0.45898 

87 

0.05618 

0.0 

1.188 

0.13568 

0.37471 

0.5153 

255.5246 

0.47647 

88 

0.014893 

0.0 

0.08236 

0.05777 

0.051357 

0.01911 

160.2792 

0.44785 

89 

0.06519 

0.0 

0.5745 

0.14257 

0.29097 

0.2934 

256.1574 

0.50827 

90 

0.052576 

0.0 

0.9141 

0.13038 

0.34874 

0.4769 

233.8467 

0.48177 

91 

0.046057 

0.0 

0.6252 

0.1166 

0.21836 

0.1897 

194.4052 

0.46269 

MEAN 

0.051198 

0.0 

'0.836107 

0.129519 

0.297588 

0.341409 

219.611 

0.469911 


7.067747 

6.196538 

2.728163 

5.457047 

2.845847 

6.253805 

5.819736 

4.21297 

5.072731 


0.330475 

0.238943 

0.112129 

0.25199 

0.084265 

0.369734 

0.281858 

0.257931 

0.240916 


0.398927 

0.428514 

0.122485 

0.346789 

0.106521 

0.276208 

0.308625 

0.221124 

0.276149 


D10 


Appendix D 






Segment 190 


< 

TP 

84 

FOR 

HTC 

LTC 

'lOUS - 

PAS 

URB 

HAY 

-Impervious-> 

ANML RES 

Total 

Load 

0.14224 

0.0 

1.811 

0.30863 

0.9798 

1.981 

453.4486 

0.96648 

0.782107 

85 

0.08952 

0.0 

2.924 

0.21313 

0.95443 

1.228 

444.1781 

0.87078 

0.719034 

86 

0.029308 

0.0 

0.5103 

0.08046 

0.17187 

0.5073 

251.5538 

0.91298 

0.263806 

87 

0.08555 

0.0 

2.061 

0.18191 

0.72071 

1.375 

447.1681 

0.94747 

0.650693 

88 

0.020435 

0.0 

0.3911 

0.07698 

0.085217 

0.2426 

280.4886 

0.89085 

0.223366 

89 

0.0987 

0.0 

1.967 

0.19254 

0.55197 

1.84 

448.2755 

1.01127 

0.69798 

90 

0.075026 

0.0 

2.276 

0.17541 

0.66774 

1.351 

409.2317 

0.95877 

0.637978 

91 

0.070417 

0.0 

1.425 

0.15454 

0.41236 

1.325 

340.2091 

0.92069 

0.518563 

MEAN 

0.076399 

0.0 

1.670675 

0.17295 

0.568012 

1.231237 

384.3192 

0.934911 

0.561691 

BOO 

84 

5.19 

0.0 

65.10001 

13.23 

28.8 

39.9 

4534.486 

27.48 

19.48365 

85 

3.57 

0.0 

142.2 

9.0 

27.93 

40.5 

4441.781 

24.78 

23.32123 

86 

1.128 

0.0 

11.46 

3.42 

5.34 

6.210001 

2515.538 

25.98 

4.837374 

87 

3.18 

0.0 

79.8 

7.68 

21.21 

36.9 

4471.681 

26.97 

17.41364 

88 

0.843 

0.0 

8.820001 

3.27 

2.907 

2.466 

2804.886 

25.35 

3.952744 

89 

3.69 

0.0 

46.2 

8.070001 

16.47 

21.99 

4482.755 

28.77 

13.21006 

90 

2.976 

0.0 

68.10001 

7.380001 

19.74 

33.6 

4092.317 

27.27 

15.74198 

91 

2.607 

0.0 

38.7 

6.6 

12.36 

13.95 

3402.091 

26.19 

10.05395 

MEAN 

2.898 

0.0 

57.5475 

7.33125 

16.84463 

24.4395 

3843.192 

26.59875 

13.50183 

SED 

84 

0.161 

0.0 

1.01 

0.377 

0.291 

0.764 

0.0 

0.0 

0.34842 

85 

0.07501 

0.0 

1.72 

0.247 

0.285 

0.751 

0.0 

0.0 

0.327416 

86 

0.03091 

0.0 

0.175 

0.0886 

0.04231 

0.111 

0.0 

0.0 

0.06382 

87 

0.07149 

0.0 

1.05 

0.208 

0.211 

0.682 

0.0 

0.0 

0.254502 

88 

0.01559 

0.0 

0.07836 

0.08145 

0.01251 

0.03172 

0.0 

0.0 

0.035972 

89 

0.08934 

0.0 

0.517 

0.213 

0.149 

0.391 

0.0 

0.0 

0.186156 

90 

0.06207 

0.0 

0.806 

0.197 

0.191 

0.619 

0.0 

0.0 

0.220583 

91 

0.06088 

0.0 

0.553 

0.18 

0.115 

0.255 

0.0 

0.0 

0.14878 

MEAN 

0.070786 

0.0 

0.73867 

0.199006 

0.162103 

0.45059 

0.0 

0.0 

0.198206 


Appendix D 


Dll 




Segment 200 





-Pervious- 



<-Impervious-> 

Total 

NH3 

84 

FOR 

HTC 

LTC 

PAS 

UR8 

HAY 

ANML 

RES 

Load 

0.05779 

0.0 

2.408 

0.118 

0.57 

0.7735 

228.8566 

1.38 

0.418653 

85 

0.04321 

0.0 

0.8725 

0.06504 

0.206 

0.1686 

203.4 

1.28 

0.207493 

86 

0.02965 

0.0 

0.311 

0.0435 

0.13 

0.2719 

127.8527 

1.32 

0.141934 

87 

0.03721 

0.0 

1.323 

0.06537 

0.211 

0.2046 

212.675 

1.37 

0.241692 

88 

0.02937 

0.0 

1.008 

0.0371 

0.121 

0.1293 

141.7562 

1.26 

0.17328 

89 

0.03945 

0.0 

1.187 

0.06877 

0.232 

0.4415 

194.6222 

1.45 

0.256134 

90 

0.04685 

0.0 

1.813 

0.08391 

0.293 

0.2706 

222.158 

1.41 

0.297538 

91 

0.03502 

0.0 

0.6016 

0.04402 

0.119 

0.3338 

135.7537 

1.33 

0.172168 

MEAN 0.039819 

0.0 

1.190512 

0.065714 

0.23525 

0.324225 

183.3843 

1.35 

0.238612 

N03 

84 

1.3 

0.0 

10.85 

5.81 

7.45 

4.548 

57.21416 

2.54 

3.683308 

85 

1.19 

0.0 

6.266 

4.55 

4.81 

1.918 

50.85 

2.35 

2.612641 

86 

0.78 

0.0 

1.652 

2.99 

3.22 

1.618 

31.96318 

2.41 

1.61008 

87 

0.874 

0.0 

5.612 

3.8 

4.3 

2.453 

53.16876 

2.5 

2.258544 

88 

0.688 

0.0 

3.09 

2.83 

3.2 

1.753 

35.43906 

2.3 

1.62869 

89 

0.838 

0.0 

4.633 

3.96 

4.65 

2.999 

48.65554 

2.65 

2.291029 

90 

1.15 

0.0 

10.48 

4.81 

5.47 

2.843 

55.5395 

2.58 

3.060379 

91 

0.943 

0.0 

1.447 

3.31 

3.48 

2.151 

33.93842 

2.44 

1.829224 

MEAN 0.970375 

0.0 

5.50375 

4.0075 

4.5725 

2.535375 

45.84608 

2.47125 

2.371737 

ORGN 









84 

0.52311 

0.0 

4.153 

1.60272 

4.0439 

2.003 

1373.14 

3.31674 

1.841032 

85 

0.228165 

0.0 

1.215 

0.65296 

1.19091 

0.5889 

1220.4 

3.07188 

0.919786 

86 

0.111671 

0.0 

0.4714 

0.41923 

0.7049 

0.1654 

767.1164 

3.16092 

0.538692 

87 

0.188097 

0.0 

1.257 

0.76055 

1.2985 

0.4412 

1276.05 

3.27593 

0.938186 

88 

0.116865 

0.0 

0.7038 

0.280476 

0.64183 

0.1905 

850.5375 

3.01252 

0.547838 

89 

0.267862 

0.0 

1.544 

0.80507 

1.45061 

0.5277 

1167.733 

3.47256 

0.993755 

90 

0.335384 

0.0 

2.932 

1.01654 

1.87355 

1.572 

1332.948 

3.37239 

1.352738 

91 

0.089782 

0.0 

1.199 

0.365806 

0.58247 

0.5521 

814.5221 

3.1906 

0.611154 

MEAN 

0.232617 

0.0 

1.6844 

0.737919 

1.473334 

0.7551 

1100.306 

3.234192 

0.967897 

TN 

84 

1.8809 

0.0 

17.41 

7.53072 

12.0639 

7.324 

2002.496 

7.23674 

6.054855 

85 

1.461375 

0.0 

8.354 

5.268 

6.20691 

2.675 

1779.75 

6.70188 

3.839422 

86 

0.921321 

0.0 

2.434 

3.45273 

4.0549 

2.055 

1118.711 

6.89092 

2.353207 

87 

1.099307 

0.0 

8.193001 

4.62592 

5.8095 

3.099 

1860.907 

7.14593 

3.54257 

88 

0.834235 

0.0 

4.802 

3.147576 

3.96283 

2.073 

1240.367 

6.57252 

2.419203 

89 

1.145312 

0.0 

7.364 

4.83384 

6.33261 

3.968 

1702.944 

7.572559 

3.636125 

90 

1.532234 

0.0 

15.22 

5.91045 

7.63655 

4.686 

1943.882 

7.36239 

4.819077 

91 

1.067802 

0.0 

3.247 

3.719826 

4.18147 

3.037 

1187.845 

6.9606 

2.678942 

MEAN 

1.242811 

0.0 

8.378 

4.811133 

6.281084 

3.614625 

1604.613 

7.055442 

3.667925 

P04 

84 

0.01275 

0.0 

0.6164 

0.07378 

0.545 

1.029 

57.21416 

0.472 

0.225821 

85 

0.004142 

0.0 

0.7467 

0.03355 

0.15 

0.2637 

50.85 

0.437 

0.116499 

86 

0.002498 

0.0 

0.2151 

0.01954 

0.08389 

0.5141 

31.96318 

0.449 

0.094931 

87 

0.003925 

0.0 

0.5577 

0.0365 

0.167 

0.5433 

53.16876 

0.466 

0.136311 

88 

0.002625 

0.0 

0.3482 

0.01425 

0.07615 

0.2152 

35.43906 

0.428 

0.0714 

89 

0.006005 

0.0 

0.6788 

0.03844 

0.187 

0.7634 

48.65554 

0.494 

0.168686 

90 

0.007046 

0.0 

1.198 

0.04843 

0.244 

0.7023 

55.5395 

0.479 

0.203578 

91 

0.001943 

0.0 

0.3832 

0.01823 

0.06614 

0.8423 

33.93842 

0.454 

0.139281 

MEAN 

0.005117 

0.0 

0.593013 

0.03534 

0.189898 

0.609163 

45.84608 

0.459875 

0.144563 

ORGP 










84 

0.07473 

0.0 

1.108 

0.22896 

0.5777 

0.5406 

228.8566 

0.47382 

0.333374 

85 

0.032595 

0.0 

0.3241 

0.09328 

0.17013 

0.1617 

203.4 

0.43884 

0.158668 

86 

0.015953 

0.0 

0.1257 

0.05989 

0.1007 

0.04507 

127.8527 

0.45156 

0.088907 

87 

0.026871 

0.0 

0.3351 

0.10865 

0.1855 

0.1188 

212.675 

0.46799 

0.159766 

88 

0.016695 

0.0 

0.1875 

0.040068 

0.09169 

0.05113 

141.7562 

0.43036 

0.092957 

89 

0.038266 

0.0 

0.4118 

0.11501 

0.20723 

0.144 

194.6222 

0.49608 

0.1705 

90 

0.047912 

0.0 

0.7789 

0.14522 

0.26765 

0.4317 

222.158 

0.48177 

0.248416 

91 

0.012826 

0.0 

0.3197 

0.052258 

0.08321 

0.1478 

135.7537 

0.4558 

0.110384 

MEAN 0.033231 

0.0 

0.44885 

0.105417 

0.210476 

0.2051 

183.3843 

0.462027 

0.170371 


D12 


Appendix D 





Segment 200 


< 

TP 

84 

FOR 

HTC 

LTC PAS 

URB 

HAY 

—-Impervious-> 

ANML RES 

Total 

Load 

0.08748 

0.0 

1.724 

0.30274 

1.1227 

1.57 

400.4991 

0.94582 

0.596537 

85 

0.036737 

0.0 

1.071 

0.12683 

0.32013 

0.4254 

355.95 

0.87584 

0.308353 

86 

0.018451 

0.0 

0.3407 

0.07943 

0.18459 

0.5592 

223.7423 

0.90056 

0.204687 

87 

0.030796 

0.0 

0.8929 

0.14515 

0.3525 

0.6621 

372.1813 

0.93399 

0.33077 

88 

0.01932 

0.0 

0.5357 

0.054318 

0.16784 

0.2663 

248.0734 

0.85836 

0.187475 

89 

0.044271 

0.0 

1.091 

0.15345 

0.39423 

0.9074 

340.5888 

0.99008 

0.370954 

90 

0.054958 

0.0 

1.977 

0.19365 

0.51165 

1.134 

388.7765 

0.96077 

0.488234 

91 

0.014769 

0.0 

0.7029 

0.070488 

0.14935 

0.9901 

237.5689 

0.9098 

0.271806 

MEAN 0.038348 

0.0 

1.0419 

0.140757 

0.400374 

0.814312 

320.9225 

0.921903 

0.344852 

BOD 

84 

4.23 

0.0 

59.1 

12.96 

32.7 

51.9 

4004.991 

26.82 

17.95011 

85 

1.845 

0.0 

22.77 

5.28 

9.63 

18.84 

3559.5 

24.84 

7.685593 

86 

0.903 

0.0 

7.68 

3.39 

5.7 

3.99 

2237.423 

25.56 

3.588633 

87 

1.521 

0.0 

19.95 

6.15 

10.5 

12.12 

3721.813 

26.49 

6.958815 

88 

0.945 

0.0 

13.47 

2.268 

5.19 

6.57 

2480.734 

24.36 

4.022025 

89 

2.166 

0.0 

28.23 

6.510001 

11.73 

18.12 

3405.888 

28.08 

8.528705 

90 

2.712 

0.0 

50.1 

8.22 

15.15 

50.7 

3887.765 

27.27 

14.36487 

91 

0.726 

0.0 

14.73 

2.958 

4.71 

11.31 

2375.689 

25.8 

4.608787 

MEAN 

1.881 

0.0 

27.00375 

5.967 

11.91375 

21.69375 

3209.225 

26.1525 

8.463443 

SED 

84 

0.15 

0.0 

0.99 

0.351 

0.524 

0.722 

0.0 

0.0 

0.329046 

85 

0.03882 

0.0 

0.292 

0.129 

0.125 

0.219 

0.0 

0.0 

0.099306 

86 

0.02627 

0.0 

0.114 

0.0828 

0.07266 

0.06218 

0.0 

0.0 

0.051127 

87 

0.03697 

0.0 

0.302 

0.159 

0.147 

0.166 

0.0 

0.0 

0.101694 

88 

0.02868 

0.0 

0.171 

0.04936 

0.06394 

0.07286 

0.0 

0.0 

0.048788 

89 

0.0604 

0.0 

0.371 

0.168 

0.167 

0.198 

0.0 

0.0 

0.125002 

90 

0.06652 

0.0 

0.686 

0.215 

0.221 

0.566 

0.0 

0.0 

0.200992 

91 

0.01242 

0.0 

0.285 

0.06751 

0.05166 

0.2 

0.0 

0.0 

0.064519 

MEAN 

0.05251 

0.0 

0.401375 

0.152709 

0.171532 

0.275755 

0.0 

0.0 

0.127559 


Appendix D 


D13 




Percent of Total Load Contributed from Each Land Use in Shenandoah Basin for Alternative No. 1 


Segment 190 




<- 



-Pervious-- 



-><-Impervious-- 

■> Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

KAY 

ANML 

RES 

Source 

Load 

NH3 

84 

2.02 

0.00 

10.46 

1.47 

2.04 

6.24 

5.81 

1.25 

70.73 

100.00 


85 

2.02 

0.00 

7.52 

1.37 

2.39 

3.17 

7.02 

1.38 

75.11 

100.00 


86 

1.28 

0.00 

1.77 

0.75 

0.70 

1.86 

4.55 

1.66 

87.44 

100.00 


87 

1.76 

0.00 

9.04 

1.10 

1.70 

2.54 

6.38 

1.35 

76.11 

100.00 


88 

1.16 

0.00 

4.19 

0.68 

0.46 

1.21 

4.42 

1.41 

86.50 

100.00 


89 

2.29 

0.00 

8.44 

1.37 

1.59 

12.27 

7.02 

1.60 

65.41 

100.00 


90 

2.16 

0.00 

11.76 

1.33 

1.92 

4.10 

6.88 

1.62 

70.21 

100.00 


91 

2.13 

0.00 

5.58 

1.30 

1.48 

5.27 

6.58 

1.78 

75.85 

100.00 

MEAN 


1.86 

0.00 

7.55 

1.18 

1.56 

4.64 

6.09 

1.49 

75.64 

100.00 

N03 

84 

17.13 

0.00 

21.22 

31.27 

12.76 

13.51 

0.61 

1.16 

2.33 

100.00 


85 

21.19 

0.00 

17.54 

33.85 

13.49 

9.48 

0.72 

1.25 

2.48 

100.00 


86 

23.25 

0.00 

8.40 

36.54 

12.79 

11.54 

0.79 

2.54 

4.13 

100.00 


87 

19.70 

0.00 

14.81 

33.54 

13.62 

13.01 

0.82 

1.53 

2.95 

100.00 


88 

21.27 

0.00 

10.00 

36.35 

12.63 

12.66 

0.82 

2.31 

3.97 

100.00 


89 

16.60 

0.00 

24.59 

30.91 

12.00 

12.08 

0.64 

1.26 

1.94 

100.00 


90 

19.19 

0.00 

22.25 

31.35 

12.25 

10.83 

0.64 

1.33 

2.15 

100.00 


91 

22.72 

0.00 

10.30 

35.31 

13.32 

12.85 

0.75 

1.79 

2.96 

100.00 

MEAN 


19.60 

0.00 

17.64 

33.08 

12.82 

11.97 

0.71 

1.52 

2.67 

100.00 

ORGN 

84 

13.58 

0.00 

13.25 

15.28 

10.87 

10.81 

26.98 

3.04 

6.20 

100.00 


85 

9.45 

0.00 

23.44 

10.52 

10.66 

10.84 

26.73 

2.77 

5.58 

100.00 


86 

8.35 

0.00 

6.58 

11.18 

5.70 

4.41 

42.34 

8.13 

13.32 

100.00 


87 

9.87 

0.00 

16.63 

10.52 

9.49 

11.47 

31.56 

3.54 

6.89 

100.00 


88 

6.52 

0.00 

2.86 

11.16 

3.24 

1.08 

49.31 

8.28 

17.56 

100.00 


89 

13.19 

0.00 

9.21 

12.73 

8.48 

7.41 

36.42 

4.34 

8.23 

100.00 


90 

10.17 

0.00 

13.94 

11.12 

9.72 

11.49 

31.78 

3.94 

7.86 

100.00 


91 

11.55 

0.00 

12.40 

12.91 

7.89 

6.03 

34.27 

4.90 

10.02 

100.00 

MEAN 


10.81 

0.00 

13.98 

12.07 

9.06 

9.07 

32.59 

4.19 

8.22 

100.00 

TN 

84 

12.66 

0.00 

16.38 

20.04 

9.75 

10.99 

10.72 

1.67 

17.78 

100.00 


85 

13.39 

0.00 

17.04 

19.62 

10.17 

8.47 

12.00 

1.72 

17.59 

100.00 


86 

12.70 

0.00 

5.73 

19.17 

7.21 

6.75 

12.66 

3.35 

32.42 

100.00 


87 

12.25 

0.00 

13.64 

18.61 

9.34 

9.82 

13.12 

2.03 

21.21 

100.00 


88 

11.26 

0.00 

6.49 

18.81 

6.49 

6.36 

13.14 

3.04 

34.38 

100.00 


89 

12.62 

0.00 

17.31 

20.19 

8.87 

10.79 

12.24 

2.01 

15.99 

100.00 


90 

13.14 

0.00 

17.61 

19.62 

9.32 

9.45 

11.86 

2.03 

16.98 

100.00 


91 

14.70 

0.00 

9.56 

21.08 

8.96 

9.10 

12.94 

2.55 

21.10 

100.00 

MEAN 


12.87 

0.00 

14.02 

19.68 

9.01 

9.30 

12.20 

2.17 

20.75 

100.00 

P04 

84 

3.70 

0.00 

7.41 

2.42 

4.97 

24.95 

3.89 

1.49 

51.16 

100.00 


85 

2.36 

0.00 

12.43 

2.13 

5.92 

13.86 

4.63 

1.63 

57.05 

100.00 


86 

1.16 

0.00 

5.72 

1.10 

1.39 

12.67 

3.66 

2.38 

71.91 

100.00 


87 

2.48 

0.00 

10.90 

1.72 

4.21 

17.51 

4.42 

1.68 

57.06 

100.00 


88 

0.75 

0.00 

6.18 

1.15 

0.66 

7.30 

4.45 

2.54 

77.00 

100.00 


89 

3.02 

0.00 

18.54 

1.99 

3.39 

33.60 

4.73 

1.91 

32.83 

100.00 


90 

2.41 

0.00 

21.58 

2.13 

4.93 

22.60 

5.14 

2.16 

39.07 

100.00 


91 

2.69 

0.00 

13.04 

1.85 . 

3.08 

30.18 

4.39 

2.13 

42.64 

100.00 

MEAN 


2.47 

0.00 

12.09 

1.88 

3.82 

21.02 

4.41 

1.92 

52.38 

100.00 

ORGP 

84 

9.88 

0.00 

17.94 

11.11 

7.90 

14.79 

22.89 

2.21 

13.28 

100.00 


85 

6.45 

0.00 

29.94 

7.18 

7.27 

14.41 

21.29 

1.89 

11.56 

100.00 


86 

5.70 

0.00 

8.41 

7.63 

3.89 

5.81 

33.73 

5.55 

29.26 

100.00 


87 

6.86 

0.00 

21.45 

7.31 

6.59 

15.18 

25.59 

2.46 

14.56 

100.00 


88 

4.36 

0.00 

3.56 

7.46 

2.17 

1.35 

38.45 

5.54 

37.09 

100.00 


89 

10.30 

0.00 

13.43 

9.94 

6.63 

11.18 

33.18 

3.39 

11.94 

100.00 


90 

7.53 

0.00 

19.36 

8.24 

7.20 

16.48 

27.46 

2.91 

10.82 

100.00 


91 

8.77 

0.00 

17.59 

9.79 

5.99 

8.71 

30.33 

3.72 

15.09 

100.00 

MEAN 


7.77 

0.00 

18.76 

8.67 

6.51 

12.50 

27.32 

3.01 

15.46 

100.00 


D14 


Appendix D 






Segment 190 



<- 




-Pervious-- 



-><-Impervious--> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

5.93 

0.00 

11.16 

5.68 

5.89 

19.92 

15.50 

1.70 

34.25 

100.00 


85 

4.06 

0.00 

19.61 

4.27 

6.24 

13.44 

16.52 

1.67 

34.17 

100.00 


86 

2.41 

0.00 

6.22 

2.93 

2.04 

10.08 

16.99 

3.18 

56.15 

100.00 


87 

4.06 

0.00 

14.46 

3.81 

4.93 

15.74 

17.40 

1.90 

37.73 

100.00 


88 

1.78 

0.00 

5.05 

2.96 

1.07 

5.11 

20.07 

3.29 

60.67 

100.00 


89 

5.34 

0.00 

15.73 

4.60 

4.30 

24.01 

19.88 

2.31 

23.81 

100.00 


90 

4.34 

0.00 

19.48 

4.48 

5.57 

18.87 

19.43 

2.35 

25.48 

100.00 


91 

4.66 

0.00 

13.93 

4.51 

3.93 

21.13 

18.44 

2.57 

30.81 

100.00 

MEAN 


4.32 

0.00 

13.95 

4.31 

4.63 

16.78 

17.80 

2.23 

35.97 

100.00 

BOD 

84 

12.28 

0.00 

22.78 

13.82 

9.82 

22.78 

8.80 

2.75 

6.98 

100.00 


85 

7.23 

0.00 

42.62 

8.05 

8.16 

19.80 

7.38 

2.12 

4.64 

100.00 


86 

9.28 

0.00 

13.94 

12.42 

6.33 

12.33 

16.97 

9.03 

19.70 

100.00 


87 

8.32 

0.00 

30.88 

8.87 

8.00 

23.30 

9.60 

2.98 

8.05 

100.00 


88 

7.61 

0.00 

11.78 

13.03 

3.78 

5.37 

20.77 

9.67 

27.97 

100.00 


89 

12.41 

0.00 

22.97 

11.98 

7.98 

17.84 

12.36 

4.09 

10.38 

100.00 


90 

8.54 

0.00 

28.90 

9.35 

8.17 

23.26 

9.63 

3.31 

8.86 

100.00 


91 

11.16 

0.00 

24.48 

12.47 

7.62 

14.40 

11.93 

4.74 

13.21 

100.00 

MEAN 


9.62 

0.00 

28.24 

10.74 

8.06 

19.57 

10.46 

3.73 

9.57 

100.00 

SED 

84 

22.90 

0.00 

21.24 

23.66 

5.97 

26.22 

0.00 

0.00 

0.00 

100.00 


85 

11.35 

0.00 

38.50 

16.50 

6.22 

27.43 

0.00 

0.00 

0.00 

100.00 


86 

24.00 

0.00 

20.10 

30.37 

4.74 

20.80 

0.00 

0.00 

0.00 

100.00 


87 

13.92 

0.00 

30.23 

17.88 

5.92 

32.04 

0.00 

0.00 

0.00 

100.00 


88 

21.48 

0.00 

15.96 

49.53 

2.48 

10.54 

0.00 

0.00 

0.00 

100.00 


89 

23.78 

0.00 

20.35 

25.02 

5.72 

25.11 

0.00 

0.00 

0.00 

100.00 


90 

13.95 

0.00 

26.78 

19.54 

6.19 

33.56 

0.00 

0.00 

0.00 

100.00 


91 

20.29 

0.00 

27.25 

26.47 

5.52 

20.50 

0.00 

0.00 

0.00 

100.00 

MEAN 


17.70 

0.00 

27.32 

21.97 

5.85 

27.19 

0.00 

0.00 

0.00 

100.00 


Appendix D 


D15 




Segment 200 




<-•--- 



-Pervious-- 



-><-Impervious--> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

NH3 

84 

2.06 

0.00 

10.48 

1.89 

2.04 

5.49 

5.06 

1.35 

71.65 

100.00 


85 

1.77 

0.00 

4.35 

1.20 

0.85 

1.37 

5.15 

1.43 

83.90 

100.00 


86 

1.33 

0.00 

1.70 

0.88 

0.59 

2.43 

3.56 

1.62 

87.86 

100.00 


87 

1.53 

0.00 

6.62 

1.21 

0.87 

1.67 

5.41 

1.54 

81.18 

100.00 


88 

1.22 

0.00 

5.12 

0.70 

0.51 

1.07 

3.66 

1.43 

86.26 

100.00 


89 

2.55 

0.00 

9.34 

2.00 

1.50 

5.67 

7.78 

2.56 

68.60 

100.00 


90 

2.88 

0.00 

13.58 

2.32 

1.81 

3.31 

8.45 

2.37 

65.29 

100.00 


91 

2.41 

0.00 

5.06 

1.37 

0.82 

4.58 

5.80 

2.51 

77.44 

100.00 

MEAN 


1.88 

0.00 

6.86 

1.40 

1.12 

3.05 

5.37 

1.74 

78.60 

100.00 

N03 

84 

18.43 

0.00 

18.75 

37.08 

10.60 

12.83 

0.50 

0.98 

0.85 

100.00 


85 

23.68 

0.00 

15.21 

40.76 

9.61 

7.60 

0.63 

1.28 

1.22 

100.00 


86 

25.06 

0.00 

6.47 

43.24 

10.38 

10.34 

0.64 

2.12 

1.77 

100.00 


87 

20.09 

0.00 

15.73 

39.33 

9.92 

11.22 

0.76 

1.57 

1.35 

100.00 


88 

21.87 

0.00 

11.98 

40.49 

10.21 

11.09 

0.70 

2.00 

1.68 

100.00 


89 

19.03 

0.00 

12.83 

40.49 

10.60 

13.55 

0.68 

1.64 

1.16 

100.00 


90 

19.61 

0.00 

21.79 

36.90 

9.36 

9.65 

0.59 

1.20 

0.87 

100.00 


91 

26.75 

0.00 

5.01 

42.28 

9.91 

12.14 

0.60 

1.89 

1.39 

100.00 

MEAN 


21.28 

0.00 

14.72 

39.56 

10.07 

11.07 

0.62 

1.48 

1.20 

100.00 

ORGN 

84 

14.70 

0.00 

14.23 

20.27 

11.41 

11.20 

23.91 

2.55 

1.72 

100.00 


85 

12.60 

0.00 

8.19 

16.23 

6.60 

6.47 

41.78 

4.64 

3.49 

100.00 


86 

10.36 

0.00 

5.33 

17.51 

6.57 

3.05 

44.11 

8.01 

5.03 

100.00 


87 

10.21 

0.00 

8.32 

18.58 

7.08 

4.77 

42.93 

4.86 

3.25 

100.00 


88 

10.62 

0.00 

7.80 

11.47 

5.85 

3.44 

47.89 

7.48 

5.46 

100.00 


89 

13.77 

0.00 

9.68 

18.64 

7.49 

5.40 

37.21 

4.88 

2.94 

100.00 


90 

12.77 

0.00 

13.61 

17.42 

7.16 

11.91 

31.44 

3.51 

2.17 

100.00 


91 

7.39 

0.00 

12.04 

13.56 

4.81 

9.05 

41.56 

7.18 

4.39 

100.00 

MEAN 


12.26 

0.00 

10.83 

17.51 

7.80 

7.92 

35.94 

4.66 

3.07 

100.00 

TN 

84 

13.80 

0.00 

15.58 

24.88 

8.88 

10.69 

9.10 

1.45 

15.63 

100.00 


85 

15.43 

0.00 

10.76 

25.05 

6.58 

5.62 

11.64 

1.93 

22.99 

100.00 


86 

14.10 

0.00 

4.54 

23.78 

6.23 

6.26 

10.61 

2.88 

31.60 

100.00 


87 

12.46 

0.00 

11.32 

23.60 

6.61 

6.99 

13.07 

2.21 

23.76 

100.00 


88 

12.31 

0.00 

8.64 

20.90 

5.87 

6.08 

11.34 

2.65 

32.24 

100.00 


89 

14.18 

0.00 

11.12 

26.92 

7.87 

9.77 

13.06 

2.56 

14.50 

100.00 


90 

14.84 

0.00 

17.98 

25.77 

7.42 

9.03 

11.66 

1.95 

11.35 

100.00 


91 

16.91 

0.00 

6.27 

26.52 

6.65 

9.57 

11.66 

3.01 

19.41 

100.00 

MEAN 


14.21 

0.00 

11.68 

24.78 

7.21 

8.23 

11.37 

2.20 

20.33 

100.00 

P04 

84 

1.92 

0.00 

11.30 

4.99 

8.22 

30.77 

5.33 

1.94 

35.55 

100.00 


85 

0.90 

0.00 

19.77 

3.28 

3.27 

11.39 

6.84 

2.59 

51.96 

100.00 


86 

0.62 

0.00 

6.51 

2.18 

2.09 

25.40 

4.92 

3.05 

55.22 

100.00 


87 

0.79 

0.00 

13.62 

3.29 

3.36 

21.64 

6.60 

2.55 

48.13 

100.00 


88 

0.69 

0.00 

11.12 

1.68 

2.00 

11.22 

5.75 

3.06 

64.48 

100.00 


89 

1.19 

0.00 

16.42 

3.43 

3.72 

30.13 

5.98 

2.68 

36.43 

100.00 


90 

1.24 

0.00 

25.62 

3.82 

4.29 

24.50 

6.03 

2.29 

32.20 

100.00 


91 

0.41 

0.00 

9.96 

1.75 

1.42 

35.74 

4.48 

2.65 

43.58 

100.00 

MEAN 


1.04 

0.00 

14.63 

3.22 

3.86 

24.53 

5.75 

2.54 

44.44 

100.00 

ORGP 

84 

11.07 

0.00 

20.02 

15.27 

8.59 

15.94 

21.01 

1.92 

6.19 

100.00 


85 

9.49 

0.00 

11.51 

12.22 

4.97 

9.36 

36.68 

3.49 

12.30 

100.00 


86 

7.67 

0.00 

7.37 

12.96 

4.86 

4.31 

38.06 

5.93 

18.86 

100.00 


87 

7.77 

0.00 

11.82 

14.14 

5.38 

6.83 

38.10 

3.70 

12.27 

100.00 


88 

7.42 

0.00 

10.17 

8.02 

4.09 

4.52 

39.05 

5.23 

21.52 

100.00 


89 

10.68 

0.00 

14.02 

14.45 

5.81 

8.00 

33.67 

3.78 

9.56 

100.00 


90 

9.47 

0.00 

18.77 

12.92 

5.31 

16.97 

27.20 

2.60 

6.77 

100.00 


91 

5.18 

0.00 

15.75 

9.51 

3.38 

11.89 

34.00 

5.03 

15.26 

100.00 

MEAN 


9.14 

0.00 

15.05 

13.05 

5.81 

11.22 

31.24 

3.47 

11.01 

100.00 


D16 


Appendix D 





Segment 200 



<- 




■Pervious-- 



-><-Impervious--> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

6.20 

0.00 

14.90 

9.66 

7.98 

22.13 

17.57 

1.83 

19,72 

100.00 


85 

4.23 

0.00 

15.06 

6.58 

3.70 

9.76 

25.42 

2.76 

32.46 

100.00 


86 

2.84 

0.00 

6.39 

5.50 

2.85 

17.11 

21.31 

3.78 

40.23 

100.00 


87 

3.38 

0.00 

11.95 

7.17 

3.88 

14.46 

25.31 

2.80 

31.04 

100.00 


88 

2.97 

0.00 

10.04 

3.76 

2.59 

8.14 

23.63 

3.60 

45.27 

100.00 


89 

4.80 

0.00 

14.42 

7.49 

4.29 

19.57 

22.87 

2.93 

23.62 

100.00 


90 

4.80 

0.00 

21.05 

7.61 

4.48 

19.70 

21.03 

2.29 

19.03 

100.00 


91 

1.95 

0.00 

11.30 

4.18 

1.98 

25.98 

19.41 

3.28 

31.93 

100.00 

MEAN 


4.19 

0.00 

13.89 

6.93 

4.39 

17.72 

21.74 

2.75 

28.38 

100.00 

BOO 

84 

11.74 

0.00 

20.01 

16.19 

9.11 

28.66 

6.88 

2.03 

5.38 

100.00 


85 

11.60 

0.00 

17.46 

14.94 

6.08 

23.58 

13.86 

4.27 

8.21 

100.00 


86 

10.69 

0.00 

11.09 

18.07 

6.77 

9.40 

16.41 

8.27 

19.29 

100.00 


87 

9.75 

0.00 

15.61 

17.76 

6.76 

15.47 

14.79 

4.64 

15.25 

100.00 


88 

9.42 

0.00 

16.38 

10.18 

5.19 

13.03 

15.32 

6.64 

23.84 

100.00 


89 

11.66 

0.00 

18.53 

15.77 

6.33 

19.40 

11.35 

4.13 

12.83 

100.00 


90 

9.14 

0.00 

20.59 

12.47 

5.13 

34.01 

8.12 

2.51 

8.04 

100.00 


91 

6.52 

0.00 

16.13 

11.95 

4.24 

20.21 

13.21 

6.33 

21.41 

100.00 

MEAN 


10.35 

0.00 

18.12 

14.78 

6.58 

23.75 

10.94 

3.93 

11.55 

100.00 

SED 

84 

24.00 

0.00 

19.32 

25.28 

8.42 

22.99 

0.00 

0.00 

0.00 

100.00 


85 

20.59 

0.00 

18.88 

30.79 

6.65 

23.11 

0.00 

0.00 

0.00 

100.00 


86 

27.05 

0.00 

14.32 

38.39 

7.51 

12.74 

0.00 

0.00 

0.00 

100.00 


87 

19.14 

0.00 

19.07 

37.05 

7.64 

17.10 

0.00 

0.00 

0.00 

100.00 


88 

30.96 

0.00 

22.51 

23.98 

6.93 

15.65 

0.00 

0.00 

0.00 

100.00 


89 

25.44 

0.00 

19.05 

31.85 

7.06 

16.60 

0.00 

0.00 

0.00 

100.00 


90 

17.43 

0.00 

21.92 

25.35 

5.81 

29.51 

0.00 

0.00 

0.00 

100.00 


91 

10.14 

0.00 

28.36 

24.80 

4.23 

32.47 

0.00 

0.00 

0.00 

100.00 

HEAN 


21.67 

0.00 

20.20 

28.37 

7.10 

22.64 

0.00 

0.00 

0.00 

100.00 


Appendix D 


D17 





Per Acre Load Contributed from Each Land Use in Shenandoah Basin for Alternative No. 2 (Ib/ac) 


Segment 190 


< 

FOR 

HTC 

-Perv 

LTC 

ious- 

PAS 

URB 

HAY 

-Impervious-> 

ANML RES 

Total 

Load 

NH3 

84 

0.07395 

0.0 

4.264 

0.122 

0.518 

1.102 

259.1135 

1.08 

0.672519 

85 

0.05978 

0.0 

2.96 

0.09196 

0.492 

0.4351 

253.8161 

0.969 

0.477282 

86 

0.03314 

0.0 

0.9344 

0.04404 

0.126 

0.1982 

143.745 

1.02 

0.207013 

87 

0.05784 

0.0 

2.666 

0.08217 

0.387 

0.4592 

255.5246 

1.05 

0.450405 

88 

0.03436 

0.0 

1.18 

0.04569 

0.09389 

0.1656 

160.2792 

0.992 

0.225919 

89 

0.06837 

0.0 

4.064 

0.09252 

0.33 

1.717 

256.1574 

1.13 

0.7086 

90 

0.06026 

0.0 

4.596 

0.08365 

0.371 

0.5272 

233.8467 

1.07 

0.591968 

91 

0.05155 

0.0 

2.323 

0.07117 

0.248 

0.5449 

194.4052 

1.02 

0.394596 

MEAN 

0.054906 

0.0 

2.873425 

0.07915 

0.320736 

0.64365 

219.611 

1.041375 

0.466038 

N03 

84 

1.48 

0.0 

13.55 

6.12 

7.65 

4.779 

64.77838 

2.38 

4.25933 

85 

1.53 

0.0 

15.37 

5.54 

6.76 

2.851 

63.45402 

2.13 

3.990734 

86 

0.862 

0.0 

8.09 

3.07 

3.29 

1.789 

35.93626 

2.23 

2.201889 

87 

1.26 

0.0 

12.64 

4.86 

6.04 

3.552 

63.88116 

2.32 

3.54464 

88 

0.847 

0.0 

5.875 

3.28 

3.49 

2.158 

40.0698 

2.18 

2.137103 

89 

1.37 

0.0 

19.76 

5.78 

6.87 

4.253 

64.03936 

2.47 

4.468517 

90 

1.43 

0.0 

13.32 

5.29 

6.33 

3.311 

58.46167 

2.35 

3.763114 

91 

1.21 

0.0 

8.483999 

4.26 

4.92 

2.804 

48.6013 

2.25 

2.906913 

MEAN 

1.248625 

0.0 

12.13612 

4.775 

5.668751 

3.187125 

54.90275 

2.28875 

3.40903 


ORGN 


84 

0.64183 

0.0 

4.298 

1.63611 

3.5616 

2.125 

1554.681 

3.39836 

2.20245 

85 

0.44149 

0.0 

7.635 

1.113 

3.45401 

2.133 

1522.896 

3.06446 

2.20665 

86 

0.139496 

0.0 

0.7703 

0.42294 

0.66038 

0.3084 

862.4703 

3.21286 

0.71993 

87 

0.39326 

0.0 

4.555 

0.94976 

2.62297 

1.91 

1533.148 

3.33529 

1.845124 

88 

0.104251 

0.0 

0.314 

0.40439 

0.359499 

0.0717 

961.6753 

3.13495 

0.65385 

89 

0.45633 

0.0 

2.185 

0.99799 

2.03679 

1.076 

1536.945 

3.55789 

1.577851 

90 

0.368032 

0.0 

3.468 

0.91266 

2.44118 

1.753 

1403.08 

3.37239 

1.661004 

91 

0.322399 

0.0 

2.378 

0.8162 

1.52852 

0.7022 

1166.431 

3.23883 

1.247596 

MEAN 

0.358386 

0.0 

3.200413 

0.906631 

2.083118 

1.259912 

1317.666 

3.289379 

1.514307 

TN 

84 

2.19578 

0.0 

22.11 

7.87811 

11.7296 

8.007 

2267.243 

6.85836 

7.292219 

85 

2.03127 

0.0 

25.97 

6.74496 

10.70601 

5.419 

2220.891 

6.16346 

6.829739 

86 

1.034636 

0.0 

9.795 

3.53698 

4.07638 

2.295 

1257.769 

6.46286 

3.216405 

87 

1.7111 

0.0 

19.86 

5.89193 

9.04997 

5.921 

2235.841 

6.70529 

5.995832 

88 

0.985611 

0.0 

7.369 

3.73008 

3.943389 

2.395 

1402.443 

6.30695 

3.114538 

89 

1.8947 

0.0 

26.01 

6.87051 

9.236791 

7.046 

2241.378 

7.15789 

6.911187 

90 

1.858292 

0.0 

21.39 

6.28631 

9.14218 

5.591 

2046.159 

6.79239 

6.159048 

91 

1.583949 

0.0 

13.19 

5.14737 

6.69652 

4.051 

1701.045 

6.50883 

4.667962 

MEAN 

1.661917 

0.0 

18.21175 

5.760781 

8.072605 

5.090625 

1921.596 

6.619503 

5.523366 

P04 

84 

0.05055 

0.0 

1.684 

0.0749 

0.471 

1.364 

64.77838 

0.481 

0.397992 

85 

0.02645 

0.0 

1.398 

0.05413 

0.461 

0.6514 

63.45402 

0.433 

0.27308 

86 

0.00938 

0.0 

0.6226 

0.02004 

0.07753 

0.3945 

35.93626 

0.454 

0.131482 

87 

0.02937 

0.0 

1.454 

0.04623 

0.346 

0.9056 

63.88116 

0.471 

0.300052 

88 

0.005542 

0.0 

0.5172 

0.01921 

0.03386 

0.2301 

40.0698 

0.443 

0.100346 

89 

0.03351 

0.0 

2.029 

0.04997 

0.261 

1.555 

64.03936 

0.503 

0.417374 

90 

0.02245 

0.0 

2.094 

0.04503 

0.319 

0.9055 

58.46167 

0.477 

0.339246 

91 

0.02436 

0.0 

1.388 

0.03794 

0.194 

1.085 

48.6013 

0.458 

0.29503 

MEAN 

0.025202 

0.0 

1.39835 

0.043431 

0.270424 

0.886387 

54.90275 

0.465 

0.281825 

ORGP 










84 

0.09169 

0.0 

1.155 

0.23373 

0.5088 

0.5723 

259.1135 

0.48548 

0.401459 

85 

0.06307 

0.0 

2.094 

0.159 

0.49343 

0.5974 

253.8161 

0.43778 

0.438495 

86 

0.019928 

0.0 

0.2087 

0.06042 

0.09434 

0.08536 

143.745 

0.45898 

0.123361 

87 

0.05618 

0.0 

1.226 

0.13568 

0.37471 

0.5216 

255.5246 

0.47647 

0.350327 

88 

0.014893 

0.0 

0.08436 

0.05777 

0.051357 

0.01926 

160.2792 

0.44785 

0.106685 

89 

0.06519 

0.0 

0.5951 

0.14257 

0.29097 

0.2984 

256.1574 

0.50827 

0.278316 

90 

0.052576 

0.0 

0.9505 

0.13038 

0.34874 

0.4885 

233.8467 

0.48177 

0.312679 

91 

0.046057 

0.0 

0.6431 

0.1166 

0.21836 

0.1914 

194.4052 

0.46269 

0.222639 

MEAN 

0.051198 

0.0 

0.869595 

0.129519 

0.297588 

0.346778 

219.611 

0.469911 

0.279245 


D18 


Appendix D 






Segment 190 


< 

TP 

84 

FOR 

HTC 

LTC 

nous—— 

PAS 

URB 

HAY 

-Impervious-> 

ANML RES 

Total 

Load 

0.14224 

0.0 

2.839 

0.30863 

0.9798 

1.936 

453.4486 

0.96648 

0.852064 

85 

0.08952 

0.0 

3.492 

0.21313 

0.95443 

1.249 

444.1781 

0.87078 

0.763172 

86 

0.029308 

0.0 

0.8313 

0.08046 

0.17187 

0.4799 

251.5538 

0.91298 

0.284055 

87 

0.08555 

0.0 

2.68 

0.18191 

0.72071 

1.427 

447.1681 

0.94747 

0.702275 

88 

0.020435 

0.0 

0.6016 

0.07698 

0.085217 

0.2494 

280.4886 

0.89085 

0.239606 

89 

0.0987 

0.0 

2.624 

0.19254 

0.55197 

1.853 

448.2755 

1.01127 

0.747683 

90 

0.075026 

0.0 

3.045 

0.17541 

0.66774 

1.394 

409.2317 

0.95877 

0.699477 

91 

0.070417 

0.0 

2.031 

0.15454 

0.41236 

1.276 

340.2091 

0.92069 

0.557116 

MEAN 

0.076399 

0.0 

2.267987 

0.17295 

0.568012 

1.233037 

384.3192 

0.934911 

0.605681 

BOO 

84 

5.19 

0.0 

65.10001 

13.23 

28.8 

39.9 

4534.486 

27.48 

19.48365 

85 

3.57 

0.0 

142.2 

9.0 

27.93 

40.5 

4441.781 

24.78 

23.32123 

86 

1.128 

0.0 

11.46 

3.42 

5.34 

6.210001 

2515.538 

25.98 

4.837374 

87 

3.18 

0.0 

79.8 

7.68 

21.21 

36.9 

4471.681 

26.97 

17.41364 

88 

0.843 

0.0 

8.820001 

3.27 

2.907 

2.466 

2804.886 

25.35 

3.952744 

89 

3.69 

0.0 

46.2 

8.070001 

16.47 

21.99 

4482.755 

28.77 

13.21006 

90 

2.976 

0.0 

68.10001 

7.380001 

19.74 

33.6 

4092.317 

27.27 

15.74198 

91 

2.607 

0.0 

38.7 

6.6 

12.36 

13.95 

3402.091 

26.19 

10.05395 

MEAN 

2.898 

0.0 

57.5475 

7.33125 

16.84463 

24.4395 

3843.192 

26.59875 

13.50183 

SED 

84 

0.161 

0.0 

1.01 

0.377 

0.291 

0.764 

0.0 

0.0 

0.34842 

85 

0.07501 

0.0 

1.72 

0.247 

0.285 

0.751 

0.0 

0.0 

0.327416 

86 

0.03091 

0.0 

0.175 

0.0886 

0.04231 

0.111 

0.0 

0.0 

0.06382 

87 

0.07149 

0.0 

1.05 

0.208 

0.211 

0.682 

0.0 

0.0 

0.254502 

88 

0.01559 

0.0 

0.07836 

0.08145 

0.01251 

0.03172 

0.0 

0.0 

0.035972 

89 

0.08934 

0.0 

0.517 

0.213 

0.149 

0.391 

0.0 

0.0 

0.186156 

90 

0.06207 

0.0 

0.806 

0.197 

0.191 

0.619 

0.0 

0.0 

0.220583 

91 

0.06088 

0.0 

0.553 

0.18 

0.115 

0.255 

0.0 

0.0 

0.14878 

MEAN 

0.070786 

0.0 

0.73867 

0.199006 

0.162103 

0.45059 

0.0 

0.0 

0.198206 


Appendix D D19 




Segment 200 






✓ious.. 



<-Impervious-> 

Total 

NH3 

84 

FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Load 

0.05779 

0.0 

3.641 

0.118 

0.57 

0.8702 

228.8566 

1.38 

0.507949 

85 

0.04321 

0.0 

2.074 

0.06504 

0.206 

0.1965 

203.4 

1.28 

0.287559 

86 

0.02965 

0.0 

0.807 

0.0435 

• 0.13 

0.2659 

127.8527 

1.32 

0.173152 

87 

0.03721 

0.0 

1.997 

0.06537 

0.211 

0.2662 

212.675 

1.37 

0.291421 

88 

0.02937 

0.0 

1.355 

0.0371 

0.121 

0.1473 

141.7562 

1.26 

0.197445 

89 

0.03945 

0.0 

3.425 

0.06877 

0.232 

0.5904 

194.6222 

1.45 

0.415426 

90 

0.04685 

0.0 

4.179 

0.08391 

0.293 

0.3143 

222.158 

1.41 

0.454028 

91 

0.03502 

0.0 

1.454 

0.04402 

0.119 

0.3283 

135.7537 

1.33 

0.226321 

MEAN 0.039819 

0.0 

2.3665 

0.065714 

0.23525 

0.372387 

183.3843 

1.35 

0.319163 

N03 

84 

1.3 

0.0 

10.23 

5.81 

7.45 

4.469 

57.21416 

2.54 

3.635224 

85 

1.19 

0.0 

10.53 

4.55 

4.81 

1.918 

50.85 

2.35 

2.886417 

86 

0.78 

0.0 

6.144 

2.99 

3.22 

1.614 

31.96318 

2.41 

1.898076 

87 

0.874 

0.0 

12.1 

3.8 

4.3 

2.56 

53.16876 

2.5 

2.686324 

88 

0.688 

0.0 

5.205 

2.83 

3.2 

1.839 

35.43906 

2.3 

1.773496 

89 

0.838 

0.0 

13.17 

3.96 

4.65 

3.103 

48.65554 

2.65 

2.850053 

90 

1.15 

0.0 

12.86 

4.81 

5.47 

2.85 

55.5395 

2.58 

3.213923 

91 

0.943 

0.0 

4.01 

3.31 

3.48 

2.113 

33.93842 

2.44 

1.989804 

MEAN 0.970375 

0.0 

9.281125 

4.0075 

4.5725 

2.55825 

45.84608 

2.47125 

2.616664 

ORGN 









84 

0.52311 

0.0 

4.221 

1.60272 

4.0439 

2.015 

1373.14 

3.31674 

1.846655 

85 

0.228165 

0.0 

1.243 

0.65296 

1.19091 

0.5972 

1220.4 

3.07188 

0.922453 

86 

0.111671 

0.0 

0.4838 

0.41923 

0.7049 

0.1666 

767.1164 

3.16092 

0.539613 

87 

0.188097 

0.0 

1.282 

0.76055 

1.2985 

0.4434 

1276.05 

3.27593 

0.940022 

88 

0.116865 

0.0 

0.717 

0.280476 

0.64183 

0.1916 

850.5375 

3.01252 

0.5488 

89 

0.267862 

0.0 

1.567 

0.80507 

1.45061 

0.5323 

1167.733 

3.47256 

0.995713 

90 

0.335384 

0.0 

2.981 

1.01654 

1.87355 

1.598 

1332.948 

3.37239 

1.358608 

91 

0.089782 

0.0 

1.224 

0.365806 

0.58247 

0.552 

814.5221 

3.1906 

0.612749 

MEAN 0.232617 

0.0 

1.71485 

0.737919 

1.473334 

0.762013 

1100.306 

3.234192 

0.970577 

TN 

84 

1.8809 

0.0 

18.09 

7.53072 

12.0639 

7.354001 

2002.496 

7.23674 

6.101658 

85 

1.461375 

0.0 

13.84 

5.268 

6.20691 

2.712 

1779.75 

6.70188 

4.195534 

86 

0.921321 

0.0 

7.435 

3.45273 

4.0549 

2.046 

1118.711 

6.89092 

2.67336 

87 

1.099307 

0.0 

15.38 

4.62592 

5.8095 

3.27 

1860.907 

7.14593 

4.021934 

88 

0.834235 

0.0 

7.278 

3.147576 

3.96283 

2.177 

1240.367 

6.57252 

2.589072 

89 

1.145312 

0.0 

18.16 

4.83384 

6.33261 

4.226 

1702.944 

7.572559 

4.356323 

90 

1.532234 

0.0 

20.02 

5.91045 

7.63655 

4.762 

1943.882 

7.36239 

5.135229 

91 

1.067802 

0.0 

6.688 

3.719826 

4.18147 

2.994 

1187.845 

6.9606 

2.895371 

MEAN 

1.242811 

0.0 

13.36138 

4.811133 

6.281084 

3.692625 

1604.613 

7.055442 

3.996061 

P04 

84 

0.01275 

0.0 

1.325 

0.07378 

0.545 

0.9965 

57.21416 

0.472 

0.267913 

85 

0.004142 

0.0 

1.004 

0.03355 

0.15 

0.2749 

50.85 

0.437 

0.134192 

86 

0.002498 

0.0 

0.4204 

0.01954 

0.08389 

0.4709 

31.96318 

0.449 

0.103587 

87 

0.003925 

0.0 

0.9833 

0.0365 

0.167 

0.5648 

53.16876 

0.466 

0.165889 

88 

0.002625 

0.0 

0.5384 

0.01425 

0.07615 

0.2251 

35.43906 

0.428 

0.08465 

89 

0.006005 

0.0 

1.233 

0.03844 

0.187 

0.7986 

48.65554 

0.494 

0.207956 

90 

0.007046 

0.0 

1.692 

0.04843 

0.244 

0.7256 

55.5395 

0.479 

0.237737 

91 

0.001943 

0.0 

0.9597 

0.01823 

0.06614 

0.7701 

33.93842 

0.454 

0.168732 

MEAN 

0.005117 

0.0 

1.019475 

0.03534 

0.189898 

0.603312 

45.84608 

0.459875 

0.171332 

ORGP 










84 

0.07473 

0.0 

1.138 

0.22896 

0.5777 

0.5457 

228.8566 

0.47382 

0.335834 

85 

0.032595 

0.0 

0.3389 

0.09328 

0.17013 

0.1651 

203.4 

0.43884 

0.159974 

86 

0.015953 

0.0 

0.1305 

' 0.05989 

0.1007 

0.04549 

127.8527 

0.45156 

0.089259 

87 

0.026871 

0.0 

0.3446 

0.10865 

0.1855 

0.1197 

212.675 

0.46799 

0.16047 

88 

0.016695 

0.0 

0.1928 

0.040068 

0.09169 

0.05157 

141.7562 

0.43036 

0.093343 

89 

0.038266 

0.0 

0.4249 

0.11501 

0.20723 

0.1458 

194.6222 

0.49608 

0.17153 

90 

0.047912 

0.0 

0.8094 

0.14522 

0.26765 

0.4421 

222.158 

0.48177 

0.251464 

91 

0.012826 

0.0 

0.3281 

0.052258 

0.08321 

0.1477 

135.7537 

0.4558 

0.110913 

MEAN 0.033231 

0.0 

0.4634 

0.105417 

0.210476 

0.207895 

183.3843 

0.462027 

0.171598 


D20 


Appendix D 





Segment 200 


<■ 

TP 

84 

FOR 

HTC 

.Perv 

LTC 

ious- 

PAS 

URB 

V 

A >- 
» < 
l Z 
• 
l 
« 

« 

1 

i 

-Impervious—-> 

ANHL RES 

Total 

Load 

0.08748 

0.0 

2.463 

0.30274 

1.1227 

1.542 

400.4991 

0.94582 

0.641052 

85 

0.036737 

0.0 

1.343 

0.12683 

0.32013 

0.44 

355.95 

0.87584 

0.327347 

86 

0.018451 

0.0 

0.551 

0.07943 

0.18459 

0.5164 

223.7423 

0.90056 

0.213706 

87 

0.030796 

0.0 

1.328 

0.14515 

0.3525 

0.6845 

372.1813 

0.93399 

0.361053 

88 

0.01932 

0.0 

0.7312 

0.054318 

0.16784 

0.2766 

248.0734 

0.85836 

0.201106 

89 

0.044271 

0.0 

1.658 

0.15345 

0.39423 

0.9445 

340.5888 

0.99008 

0.411246 

90 

0.054958 

0.0 

2.501 

0.19365 

0.51165 

1.168 

388.7765 

0.96077 

0.52544 

91 

0.014769 

0.0 

1.288 

0.070488 

0.14935 

0.9179 

237.5689 

0.9098 

0.30181 

MEAN 

0.038348 

0.0 

1.4829 

0.140757 

0.400374 

0.811237 

320.9225 

0.921903 

0.372845 

BOO 

84 

4.23 

0.0 

59.1 

12.96 

32.7 

51.9 

4004.991 

26.82 

17.95011 

85 

1.845 

0.0 

22.77 

5.28 

9.63 

18.84 

3559.5 

24.84 

7.685593 

86 

0.903 

0.0 

7.68 

3.39 

5.7 

3.99 

2237.423 

25.56 

3.588633 

87 

1.521 

0.0 

19.95 

6.15 

10.5 

12.12 

3721.813 

26.49 

6.958815 

88 

0.945 

0.0 

13.47 

2.268 

5.19 

6.57 

2480.734 

24.36 

4.022025 

89 

2.166 

0.0 

28.23 

6.510001 

11.73 

18.12 

3405.888 

28.08 

8.528705 

90 

2.712 

0.0 

50.1 

8.22 

15.15 

50.7 

3887.765 

27.27 

14.36487 

91 

0.726 

0.0 

14.73 

2.958 

4.71 

11.31 

2375.689 

25.8 

4.608787 

MEAN 

1.881 

0.0 

27.00375 

5.967 

11.91375 

21.69375 

3209.225 

26.1525 

8.463443 

SED 

84 

0.15 

0.0 

0.99 

0.351 

0.524 

0.722 

0.0 

0.0 

0.329046 

85 

0.03882 

0.0 

0.292 

0.129 

0.125 

0.219 

0.0 

0.0 

0.099306 

86 

0.02627 

0.0 

0.114 

0.0828 

0.07266 

0.06218 

0.0 

0.0 

0.051127 

87 

0.03697 

0.0 

0.302 

0.159 

0.147 

0.166 

0.0 

0.0 

0.101694 

88 

0.02868 

0.0 

0.171 

0.04936 

0.06394 

0.07286 

0.0 

0.0 

0.048788 

89 

0.0604 

0.0 

0.371 

0.168 

0.167 

0.198 

0.0 

0.0 

0.125002 

90 

0.06652 

0.0 

0.686 

0.215 

0.221 

0.566 

0.0 

0.0 

0.200992 

91 

0.01242 

0.0 

0.285 

0.06751 

0.05166 

0.2 

0.0 

0.0 

0.064519 

MEAN 

0.05251 

0.0 

0.401375 

0.152709 

0.171532 

0.275755 

0.0 

0.0 

0.127559 


Appendix D 


D21 




Percent of Total Load Contributed from Each Land Use in Shenandoah Basin for Alternative No. 2 


Segment 190 




<- 



--Pervious- 



•><-Impervious--> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

NH3 

84 

1.87 

0.00 

15.98 

1.36 

1.89 

6.74 

5.38 

1.16 

65.60 

100.00 


85 

1.87 

0.00 

13.72 

1.27 

2.22 

3.29 

6.53 

1.28 

69.84 

100.00 


86 

1.24 

0.00 

5.15 

0.72 

0.68 

1.78 

4.40 

1.61 

84.46 

100.00 


87 

1.70 

0.00 

11.56 

1.06 

1.64 

3.25 

6.15 

1.30 

73.33 

100.00 


88 

1.14 

0.00 

5.77 

0.67 

0.45 

1.32 

4.34 

1.38 

84.94 

100.00 


89 

2.02 

0.00 

17.76 

1.21 

1.41 

12.24 

6.20 

1.41 

57.77 

100.00 


90 

1.91 

0.00 

21.58 

1.17 

1.70 

4.04 

6.09 

1.44 

62.09 

100.00 


91 

1.96 

0.00 

13.05 

1.19 

1.36 

4.99 

6.05 

1.64 

69.73 

100.00 

MEAN 


1.73 

0.00 

13.37 

1.10 

1.45 

4.89 

5.67 

1.38 

70.40 

100.00 

N03 

84 

16.83 

0.00 

22.79 

30.71 

12.54 

13.11 

0.60 

1.14 

2.29 

100.00 


85 

18.59 

0.00 

27.61 

29.70 

11.84 

8.36 

0.63 

1.09 

2.18 

100.00 


86 

18.75 

0.00 

26.03 

29.48 

10.32 

9.39 

0.64 

2.05 

3.33 

100.00 


87 

17.16 

0.00 

25.46 

29.21 

11.86 

11.67. 

0.71 

1.34 

2.57 

100.00 


88 

18.95 

0.00 

19.43 

32.39 

11.25 

11.65 

0.74 

2.06 

3.54 

100.00 


89 

14.93 

0.00 

31.83 

27.80 

10.79 

11.18 

0.57 

1.14 

1.75 

100.00 


90 

18.44 

0.00 

25.40 

30.12 

11.77 

10.30 

0.62 

1.28 

2.07 

100.00 


91 

20.09 

0.00 

20.83 

31.22 

11.78 

11.23 

0.66 

1.58 

2.61 

100.00 

MEAN 


17.71 

0.00 

25.46 

29.90 

11.59 

10.91 

0.64 

1.37 

2.41 

100.00 

ORGN 

84 

13.55 

0.00 

13.42 

15.25 

10.84 

10.82 

26.91 

3.03 

6.18 

100.00 


85 

9.37 

0.00 

23.95 

10.42 

10.56 

10.92 

26.49 

2.75 

5.52 

100.00 


86 

8.33 

0.00 

6.80 

11.14 

5.68 

4.44 

42.22 

8.11 

13.28 

100.00 


87 

9.84 

0.00 

16.85 

10.49 

9.46 

11.53 

31.46 

3.53 

6.87 

100.00 


88 

6.52 

0.00 

2.90 

11.15 

3.24 

1.08 

49.28 

8.28 

17.55 

100.00 


89 

13.16 

0.00 

9.31 

12.70 

8.46 

7.48 

36.33 

4.33 

8.21 

100.00 


90 

10.12 

0.00 

14.10 

11.08 

9.68 

11.63 

31.64 

3.92 

7.83 

100.00 


91 

11.53 

0.00 

12.57 

12.88 

7.88 

6.06 

34.20 

4.89 

10.00 

100.00 

MEAN 


10.77 

0.00 

14.22 

12.02 

9.02 

9.13 

32.46 

4.18 

8.19 

100.00 

TN 

84 

12.33 

0.00 

18.38 

19.54 

9.50 

10.86 

10.45 

1.63 

17.33 

100.00 


85 

12.35 

0.00 

23.35 

18.09 

9.38 

7.95 

11.07 

1.58 

16.22 

100.00 


86 

11.33 

0.00 

15.86 

17.10 

6.44 

6.06 

11.29 

2.99 

28.92 

100.00 


87 

11.36 

0.00 

19.50 

17.26 

8.66 

9.49 

12.17 

1.88 

19.68 

100.00 


88 

10.61 

0.00 

11.72 

17.71 

6.11 

6.22 

12.37 

2.87 

32.38 

100.00 


89 

11.59 

0.00 

23.53 

18.55 

8.15 

10.40 

11.24 

1.85 

14.69 

100.00 


90 

12.53 

0.00 

21.33 

18.72 

8.89 

9.10 

11.31 

1.94 

16.19 

100.00 


91 

13.55 

0.00 

16.67 

19.42 

8.26 

8.36 

11.93 

2.35 

19.44 

100.00 

MEAN 


12.02 

0.00 

19.48 

18.39 

8.42 

8.88 

11.40 

2.02 

19.39 

100.00 

P04 

84 

3.37 

0.00 

16.59 

2.20 

4.52 

21.92 

3.54 

1.35 

46.52 

100.00 


85 

2.22 

0.00 

17.35 

2.01 

5.58 

13.19 

4.37 

1.54 

53.75 

100.00 


86 

1.11 

0.00 

10.90 

1.05 

1.32 

11.27 

3.49 

2.27 

68.57 

100.00 


87 

2.29 

0.00 

16.78 

1.59 

3.89 

17.06 

4.09 

1.55 

52.75 

100.00 


88 

0.72 

0.00 

9.92 

1.10 

0.63 

7.20 

4.26 

2.43 

73.75 

100.00 


89 

2.78 

0.00 

24.85 

1.83 

3.12 

31.08 

4.35 

1.76 

30.21 

100.00 


90 

2.14 

0.00 

29.52 

1.89 

4.38 

20.83 

4.57 

1.92 

34.75 

100.00 


91 

2.48 

0.00 

20.90 

1.70 

2.85 

26.65 

4.06 

1.97 

39.38 

100.00 

MEAN 


2.28 

0.00 

18.74 

1.74 

3.53 

19.38 

4.08 

1.78 

48.46 

100.00 

ORGP 

84 

9.82 

0.00 

18.30 

11.05 

7.86 

14.79 

22.77 

2.20 

13.21 

100.00 


85 

6.32 

0.00 

31.04 

7.03 

7.13 

14.44 

20.87 

1.85 

11.33 

100.00 


86 

5.67 

0.00 

8.79 

7.59 

3.87 

5.86 

33.57 

5.52 

29.11 

100.00 


87 

6.80 

0.00 

21.94 

7.25 

6.54 

15.23 

25.37 

2.44 

14.44 

100.00 


88 

4.35 

0.00 

3.65 

7.45 

2.16 

1.36 

38.43 

5.53 

37.07 

100.00 


89 

10.23 

0.00 

13.81 

9.88 

6.58 

11.30 

32.96 

3.37 

11.86 

100.00 


90 

7.44 

0.00 

19.90 

8.15 

7.12 

16.68 

27.14 

2.88 

10.70 

100.00 


91 

8.71 

0.00 

17.99 

9.73 

5.95 

8.74 

30.15 

3.70 

15.00 

100.00 

MEAN 


7.70 

0.00 

19.33 

8.59 

6.45 

12.58 

27.07 

2.99 

15.31 

100.00 


D22 


Appendix D 






Segment 


190 




<-— - 



■-Pervious- 



><-Impervious--> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

5.60 

0.00 

16.51 

5.36 

5.56 

18.38 

14.63 

1.61 

32.33 

100.00 


85 

3.90 

0.00 

22.52 

4.10 

6.00 

13.14 

15.89 

1.60 

32.86 

100.00 


86 

2.34 

0.00 

9.80 

2.83 

1.97 

9.23 

16.44 

3.08 

54.32 

100.00 


87 

3.87 

0.00 

17.91 

3.63 

4.70 

15.56 

16.58 

1.81 

35.93 

100.00 


88 

1.73 

0.00 

7.55 

2.88 

1.04 

5.10 

19.51 

3.19 

58.99 

100.00 


89 

5.06 

0.00 

19.90 

4.36 

4.08 

22.93 

18.85 

2.19 

22.58 

100.00 


90 

4.05 

0.00 

24.32 

4.18 

5.20 

18.17 

18.12 

2.19 

23.77 

100,00 


91 

4.43 

0.00 

18.89 

4.29 

3.74 

19.36 

17.54 

2.45 

29.31 

100.00 

MEAN 


4.11 

0.00 

18.04 

4.11 

4.40 

16.00 

16.95 

2.12 

34.25 

100.00 

BOO 

84 

12.28 

0.00 

22.78 

13.82 

9.82 

22.78 

8.80 

2.75 

6.98 

100.00 


85 

7.23 

0.00 

42.62 

8.05 

8.16 

19.80 

7.38 

2.12 

4.64 

100.00 


86 

9.28 

0.00 

13.94 

12.42 

6.33 

12.33 

16.97 

9.03 

19.70 

100.00 


87 

8.32 

0.00 

30.88 

8.87 

8.00 

23.30 

9.60 

2.98 

8.05 

100.00 


88 

7.61 

0.00 

11.78 

13.03 

3.78 

5.37 

20.77 

9.67 

27.97 

100.00 


89 

12.41 

0.00 

22.97 

11.98 

7.98 

17.84 

12.36 

4.09 

10.38 

100.00 


90 

8.54 

0.00 

28.90 

9.35 

8.17 

23.26 

9.63 

3.31 

8.86 

100.00 


91 

11.16 

0.00 

24.48 

12.47 

7.62 

14.40 

11.93 

4.74 

13.21 

100.00 

MEAN 


9.62 

0.00 

28.24 

10.74 

8.06 

19.57 

10.46 

3.73 

9.57 

100.00 

SED 

84 

22.90 

0.00 

21.24 

23.66 

5.97 

26.22 

0.00 

0.00 

0.00 

100.00 


85 

11.35 

0.00 

38.50 

16.50 

6.22 

27.43 

0.00 

0.00 

0.00 

100.00 


86 

24.00 

0.00 

20.10 

30.37 

4.74 

20.80 

0.00 

0.00 

0.00 

100.00 


87 

13.92 

0.00 

30.23 

17.88 

5.92 

32.04 

0.00 

0.00 

0.00 

100.00 


88 

21.48 

0.00 

15.96 

49.53 

2.48 

10.54 

0.00 

0.00 

0.00 

100.00 


89 

23.78 

0.00 

20.35 

25.02 

5.72 

25.11 

0.00 

0.00 

0.00 

100.00 


90 

13.95 

0.00 

26.78 

19.54 

6.19 

33.56 

0.00 

0.00 

0.00 

100.00 


91 

20.29 

0.00 

27.25 

26.47 

5.52 

20.50 

0.00 

0.00 

0.00 

100.00 

MEAN 


17.70 

0.00 

27.32 

21.97 

5.85 

27.19 

0.00 

0.00 

0.00 

100.00 


Appendix D 


D23 





Segment 


200 




<-- 

FOR 

HTC 

LTC 

--Pervious- 

PAS 

URB 

HAY 

■>«-Impervious--> 

ANML RES 

Point 

Source 

Total 

Load 

NH3 


84 

1.94 

0.00 

14.94 

1.79 

1.92 

5.82 

4.77 

1.27 

67.56 

100.00 


85 

1.66 

0.00 

9.73 

1.13 

0.80 

1.50 

4.85 

1.35 

78.97 

100.00 


86 

1.30 

0.00 

4.31 

0.86 

0.57 

2.31 

3.47 

1.58 

85.58 

100.00 


87 

1.47 

0.00 

9.62 

1.16 

0.84 

2.09 

5.21 

1.48 

78.12 

100.00 


88 

1.20 

0.00 

6.75 

0.68 

0.50 

1.20 

3.59 

1.41 

84.69 

100.00 


89 

2.13 

0.00 

22.56 

1.67 

1.26 

6.34 

6.51 

2.14 

57.39 

100.00 


90 

2.43 

0.00 

26.47 

1.96 

1.53 

3.25 

7.15 

2.00 

55.21 

100.00 


91 

2.25 

0.00 

11.42 

1.28 

0.77 

4.21 

5.42 

2.34 

72.32 

100.00 

MEAN 

N03 


1.75 

0.00 

12.71 

1.30 

1.04 

3.26 

5.00 

1.62 

73.32 

100.00 


84 

18.67 

0.00 

17.92 

37.57 

10.74 

12.77 

0.51 

1.00 

0.86 

100.00 


85 

21.46 

0.00 

23.16 

36.94 

8.71 

6.88 

0.57 

1.16 

1.10 

100.00 


86 

21.31 

0.00 

20.47 

36.77 

8.83 

8.78 

0.54 

1.80 

1.50 

100.00 


87 

16.94 

0.00 

28.59 

33.15 

8.36 

9.87 

0.64 

1.32 

1.14 

100.00 


88 

20.11 

0.00 

18.55 

37.22 

9.39 

10.69 

0.64 

1.84 

1.55 

100.00 


89 

15.34 

0.00 

29.39 

32.63 

8.54 

11.30 

0.55 

1.33 

0.94 

100.00 


90 

18.68 

0.00 

25.48 

35.16 

8.92 

9.21 

0.56 

1.15 

0.83 

100.00 


91 

24.63 

0.00 

12.78 

38.92 

9.12 

10.98 

0.55 

1.74 

1.28 

100.00 

MEAN 


19.31 

0.00 

22.53 

35.90 

9.13 

10.13 

0.57 

1.34 

1.09 

100.00 

ORGN 


84 

14.66 

0.00 

14.42 

20.21 

11.37 

11.24 

23.84 

2.54 

1.72 

100.00 


85 

12.57 

0.00 

8.35 

16.19 

6.58 

6.55 

41.66 

4.62 

3.48 

100.00 


86 

10.35 

0.00 

5.47 

17.49 

6.56 

3.07 

44.04 

8.00 

5.02 

100.00 


87 

10.19 

0.00 

8.47 

18.55 

7.06 

4.78 

42.84 

4.85 

3.24 

100.00 


88 

10.60 

0.00 

7.93 

11.45 

5.84 

3.46 

47.81 

7.47 

5.45 

100.00 


89 

13.74 

0.00 

9.81 

18.60 

7.47 

5.44 

37.14 

4.87 

2.93 

100.00 


90 

12.72 

0.00 

13.78 

17.35 

7.13 

12.06 

31.31 

3.49 

2.17 

100.00 


91 

7.38 

0.00 

12.26 

13.53 

4.80 

9.02 

41.46 

7.16 

4.38 

100.00 

MEAN 


12.23 

0.00 

11.00 

17.46 

7.78 

7.97 

35.85 

4.65 

3.06 

100.00 


TN 



84 

13.71 

0.00 

16.08 

24.71 

8.82 

10.67 

9.04 

1.44 

15.53 

100.00 


85 

14.40 

0.00 

16.64 

23.38 

6.14 

5.32 

10.87 

1.80 

21.46 

100.00 


86 

12.90 

0.00 

12.69 

21.76 

5.70 

5.70 

9.71 

2.64 

28.91 

100.00 


87 

11.29 

0.00 

19.27 

21.39 

5.99 

6.68 

11.84 

2.01 

21.53 

100.00 


88 

11.75 

0.00 

12.50 

19.95 

5.60 

6.10 

10.82 

2.53 

30.77 

100.00 


89 

12.12 

0.00 

23.45 

23.02 

6.73 

8.90 

11.17 

2.19 

12.40 

100.00 


90 

14.02 

0.00 

22.35 

24.35 

7.01 

8.67 

11.02 

1.84 

10.72 

100.00 


91 

15.88 

0.00 

12.13 

24.90 

6.24 

8.86 

10.95 

2.83 

18.23 

100.00 

MEAN 


13.27 

0.00 

17.39 

23.13 

6.73 

7.84 

10.61 

2.06 

18.98 

100.00 

P04 


84 

1.71 

0.00 

21.68 

4.45 

7.34 

26.60 

4.76 

1.73 

31.74 

100.00 


85 

0.84 

0.00 

24.77 

3.06 

3.05 

11.07 

6.38 

2.42 

48.43 

100.00 


86 

0.60 

0.00 

12.23 

2.10 

2.01 

22.36 

4.73 

2.93 

53.06 

100.00 


87 

0.71 

0.00 

21.59 

2.96 

3.02 

20.23 

5.93 

2.29 

43.28 

100.00 


88 

0.65 

0.00 

16.14 

1.58 

1.88 

11.01 

5.40 

2.87 

60.51 

100.00 


89 

1.04 

0.00 

25.99 

2.99 

3.24 

27.46 

5.21 

2.33 

31.74 

100.00 


90 

1.11 

0.00 

32.48 

3.43 

3.85 

22.73 

5.42 

2.06 

28.91 

100.00 


91 

0.37 

0.00 

22.30 

1.56 

1.26 

29.19 

4.01 

2.36 

38.93 

100.00 

MEAN 


0.94 

0.00 

22.82 

2.92 

3.50 

22.03 

5.21 

2.31 

40.30 

100.00 

ORGP 


84 

11.00 

0.00 

20.42 

15.16 

8.53 

15.98 

20.86 

1.90 

6.14 

100.00 


85 

9.42 

0.00 

11.94 

12.13 

4.93 

9.49 

36.41 

3.46 

12.21 

100.00 


86 

7.64 

0.00 

7.62 

12.92 

4.84 

4.34 

37.94 

5.91 

18.80 

100.00 


87 

7.73 

0.00 

12.10 

14.08 

5.36 

6.85 

37.94 

3.68 

12.22 

100.00 


88 

7.39 

0.00 

10.41 

7.99 

4.08 

4.55 

38.90 

5.21 

21.44 

100.00 


89 

10.62 

0.00 

14.39 

14.38 

5.78 

8.06 

33.49 

3.76 

9.51 

100.00 


90 

9.36 

0.00 

19.29 

12.77 

5.25 

17.19 

26.89 

2.57 

6.69 

100.00 


91 

5.16 

0.00 

16.11 

9.47 

3.36 

11.83 

33.85 

5.01 

15.19 

100.00 

MEAN 


9.08 

0.00 

15.44 

12.96 

5.77 

11.30 

31.04 

3.45 

10.94 

100.00 


D24 


Appendix D 





Segment 200 




<--- " " 



--Pervious- 



■><-Impervious--> 

Point 

Total 



FOR 

HTC 

LTC 

PAS 

URB 

HAY 

ANML 

RES 

Source 

Load 

TP 

84 

5.85 

0.00 

20.09 

9.11 

7.53 

20.51 

16.58 

1.73 

18.61 

100.00 


85 

4.07 

0.00 

18.13 

6.32 

3.56 

9.69 

24.40 

2.65 

31.16 

100.00 


86 

2.76 

0.00 

10.07 

5.36 

2.78 

15.39 

20.77 

3.69 

39.19 

100.00 


87 

3.18 

0.00 

16.72 

6.74 

3.65 

14.06 

23.81 

2.64 

29.20 

100.00 


88 

2.86 

0.00 

13.18 

3.61 

2.49 

8.14 

22.72 

3.47 

43.54 

100.00 


89 

4.43 

0.00 

20.24 

6.91 

3.96 

18.81 

21.12 

2.71 

21.81 

100.00 


90 

4.52 

0.00 

25.07 

7.17 

4.22 

19.11 

19.80 

2.16 

17.92 

100.00 


91 

1.81 

0.00 

19.26 

3.89 

1.84 

22.40 

18.05 

3.05 

29.69 

100.00 

MEAN 


3.96 

0.00 

18.69 

6.55 

4.15 

16.68 

20.55 

2.60 

26.81 

100.00 

BOD 

84 

11.74 

0.00 

20.01 

16.19 

9.11 

28.66 

6.88 

2.03 

5.38 

100.00 


85 

11.60 

0.00 

17.46 

14.94 

6.08 

23.58 

13.86 

4.27 

8.21 

100.00 


86 

10.69 

0.00 

11.09 

18.07 

6.77 

9.40 

16.41 

8.27 

19.29 

100.00 


87 

9.75 

0.00 

15.61 

17.76 

6.76 

15.47 

14.79 

4.64 

15.25 

100.00 


88 

9.42 

0.00 

16.38 

10.18 

5.19 

13.03 

15.32 

6.64 

23.84 

100.00 


89 

11.66 

0.00 

18.53 

15.77 

6.33 

19.40 

11.35 

4.13 

12.83 

100.00 


90 

9.14 

0.00 

20.59 

12.47 

5.13 

34.01 

8.12 

2.51 

8.04 

100.00 


91 

6.52 

0.00 

16.13 

11.95 

4.24 

20.21 

13.21 

6.33 

21.41 

100.00 

MEAN 


10.35 

0.00 

18.12 

14.78 

6.58 

23.75 

10.94 

3.93 

11.55 

100.00 

SED 

84 

24.00 

0.00 

19.32 

25.28 

8.42 

22.99 

0.00 

0.00 

0.00 

100.00 


85 

20.59 

0.00 

18.88 

30.79 

6.65 

23.11 

0.00 

0.00 

0.00 

100.00 


86 

27.05 

0.00 

14.32 

38.39 

7.51 

12.74 

0.00 

0.00 

0.00 

100.00 


87 

19.14 

0.00 

19.07 

37.05 

7.64 

17.10 

0.00 

0.00 

0.00 

100.00 


88 

30.96 

0.00 

22.51 

23.98 

6.93 

15.65 

0.00 

0.00 

0.00 

100.00 


89 

25.44 

0.00 

19.05 

31.85 

7.06 

16.60 

0.00 

0.00 

0.00 

100.00 


90 

17.43 

0.00 

21.92 

25.35 

5.81 

29.51 

0.00 

0.00 

0.00 

100.00 


91 

10.14 

0.00 

28.36 

24.80 

4.23 

32.47 

0.00 

0.00 

0.00 

100.00 

MEAN 


21.67 

0.00 

20.20 

28.37 

7.10 

22.64 

0.00 

0.00 

0.00 

100.00 


Appendix D 


D25 




REPORT DOCUMENTATION PAGE 


Form Approved 
OMB No. 0704-0188 



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Office of Management and Budget, Paperwork Reducfion Project (0704-0188), Washington, DC 20503. 


1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED 

June 1998 Final report 


4. TITLE AND SUBTITLE 

Refinement of a Comprehensive Watershed Water Quality Model with 
Application to the Chesapeake Bay Watershed 


6. AUTHOR(S) 

Anthony S. Donigian, Jr., Brian R. Bicknell, Radha V. Chinnaswamy, 
Patrick N. Deliman 


7. PERFORMING ORGANIZATION NAME(S) AND ADDRESSES) 

AQUA TERRA Consultants, 2672 Bayshore Parkway, 

Suite 1001, Mountain View, CA 94043; 

U.S. Army Engineer Waterways Experiment Station, 

3909 Halls Ferry Road, Vicksburg, MS 39180-6199 _ 


9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESSES) 

Chesapeake Bay Program Office 
U.S. Environmental Protection Agency 
Annapolis, MD 21403 


11. SUPPLEMENTARY NOTES 

Available from National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161. 


8. PERFORMING ORGANIZATION 
REPORT NUMBER 

Technical Report EL-98-6 


10. SPONSORINGMONITORING 
AGENCY REPORT NUMBER 


12b. DISTRIBUTION CODE 


12a. DISTRIBUTEN/AVAILABIUTY STATEMENT 

Approved for public release; distribution is unlimited. 


13. ABSTRACT (Maximum200 words) 

The focus of this research work was to improve the overall utility of the Chesapeake Bay Watershed Model, based on the 
U.S. Environmental Protection Agency Hydrologic Simulation Program-Fortran (HSPF) model, as a planning tool for 
comprehensive watershed planning and assessment The specific improvements recommended and tasks performed in this 
effort included refinement of the agricultural (AGCHEM) module simulation to better represent plant uptake impacts of 
agricultural practices and nutrient management scenarios, testing the AGCHEM refinements, applying the refined AGCHEM 
to selected subbasins of the Chesapeake Bay drainage, and recalibrating the refined Watershed Model to the selected 
subbasins. 

The addition of a yield-based plant uptake option in the AGCHEM module of HSPF, derived from the Nitrate Leaching 
and Economic Analysis Package uptake formulation, provides an improved algorithm for representing the plant uptake 
component of nutrient balances for agricultural croplands. The new algorithm allows for direct consideration of expected 
plant yield levels for both N and P, seasonal distribution of uptake rates and multiple cropping periods, N fixation by 
leguminous plants, and stress conditions related to available nutrient levels and moisture conditions. 


14. SUBJECT TERMS 

Modeling 

Nutrients 


Water quality 
Watershed 


(Continued) 


15. NUMBER OF PAGES 

244 


16. PRICE CODE 


17. SECURITY CLASSIFICATION 18. SECURITY CLASSIFICATION 19. SECURITY CLASSIFICATION 20. LIMITATION OF ABSTRACT 
OF REPORT OF THIS PAGE OF ABSTRACT 


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13. (Concluded). 


Testing of the algorithm shows that it is sensitive to the available plant nutrients in the soil layers and to the target 
levels defined by the user corresponding to expected crop yields. Furthermore, decreased application rates will 
allow uptake levels to remain unchanged only if the plant-available nutrients are sufficient to meet crop needs. This 
has important implications for agricultural Best Management Practices that include nutrient reduction component*: 

The overall Watershed Model recalibration results show a significant improvement from earlier efforts with 
improved seasonal variation and tracking of the observed nutrient concentration values. However, problems still 
remain for selected constituents and subbasin sites, and further "fine t unin g" of the calibration is recommended 
along with more detailed investigations into the instream algal and benthic simulation. 

Demonstration simulations of alternative nutrient reduction scenarios have shown that the Watershed Model with 
the refined AGCHEM plant uptake routines provides a reasonable representation of nutrient balances at the 
watershed scale for evaluation of management options for nutrient reduction objectives.