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Historic, Archive Document 

Do not assume content reflects current 
scientific knowledge, policies, or practices. 



WATER SUPPLY OUTLOOK 

FOR 

COLORADO AND NEW MEXICO 




U. S. DEPARTMENT of AGRICULTURE ★ SOIL CONSERVATION SERVICE 



Collaborating with 

COLORADO STATE UNIVERSITY EXPERIMENT STATION 
STATE ENGINEER of COLORADO 
and STATE ENGINEER of NEW MEXICO 

Data included in this report were obtained l>\ the agencies named above in cooperation 
with Federal. Stale and private organizations listed inside the back cover of this report. 



AS OFIIIIIIIIIIIIIIIII 
4PR. 1, 1976 

I 



TO RECIPIENTS OF WATER SUPPLY OUTLOOK REPORTS: 



Most of the usable water in western states originates as mountain snowfall. This snowfall accumulates during the winter and 
spring, several months before the snow melts and appears as streamflow. Since the runoff from precipitation as snow is delayed, 
estimates of snowmelt runoff can be made well in advance of its occurrence. Streamflow forecasts published in this report are 
based principally on measurement of the water equivalent of the mountain snowpack. 

Forecasts become more accurate as more of the data affecting runoff are measured. All forecasts assume that climatic 
factors during the remainder of the snow accumulation and melt season will interact with a resultant average effect on runoff. 
Early season forecasts are therefore subject to a greater change than those made on later dates. 

The snow course measurement is obtained by sampling snow depth and water equivalent at surveyed and marked locations in 
mountain areas. A total of about ten samples are taken at each location. The average of these are reported as snow depth and 
water equivalent. These measurements are repeated in the same location near the same dates each year. 

Snow surveys are made monthly or semi-monthly from January 1 through June 1 in most states. There are about 1900 snow 
courses in Western United States and in the Columbia Basin in British Columbia. Networks of automatic snow water equivalent 
and related data sensing devices, along with radio telemetry are expanding and will provide a continuous record of snow water 
and other parameters at key locations. 

Detailed data on snow course and soil moisture measurements are presented in state and local reports. Other data on 
reservoir storage, summaries of precipitation, current streamflow, and soil moisture conditions at valley elevations are also 
included. The report for Western United States presents a broad picture of water supply outlook conditions, including selected 
streamflow forecasts, summary of snow accumulation to date, and storage in larger reservoirs. 

Snow survey and soil moisture data for the period of record are published by the Soil Conservation Service by states about 
every five years. Data for the current year is summarized in a West-wide basic data summary and published about October 1 
of each year. 



COVER PHOTO: SURVEYOR ENROUTE TO THE MI. BALDY ARIZONA SNOW COURSE 

SCS PHOTO AZ-5460 



PUBLISHED BY SOIL CONSERVATION SERVICE 

The Soil Conservation Service publishes reports following the principal snow survey dates from January 1 through June 1 in 
cooperation with state water administrators, agricultural experiment stations and others. Copies of the reports for Western 
United States and all state reports may be obtained from Soil Conservation Service, West Technical Service Center, Room 111, 
511 N.W. Broadway, Portland, Oregon 97209. 

Copies of state and local reports may also be obtained from state offices of the Soil Conservation Service in the following 
states: 



STATE 

Alaska 
Arizona 

Colorado (N. Mex.) 

Idaho 

Montana 

Nevada 

Oregon 

Utah 

Washington 
Wyoming 



ADDRESS 

204 E. 5th. Ave., Room 217, Anchorage, Alaska 99501 

6029 Federal Building, Phoenix, Arizona 85025 

P. O. Box 17107, Denver, Colorado 80217 

Room 345, 304 N. 8th. St., Boise, Idaho 83702 

P.O. Box 98, Bozeman, Montana 59715 

P. O. Box 4850, Reno Nevada 89505 

1220 S.W. Third Ave., Portland, Oregon 97204 

4012 Federal Bldg., 125 South State St., Salt Lake City, Utah 841 38 
360 U.S. Court House, Spokane, Washington 99201 
P. O. Box 2440, Casper, Wyoming 82601 



PUBLISHED BY OTHER AGENCIES 

Water Supply Outlook reports prepared by other agencies include a report for California by the 
Water Supply Forecast and Snow Surveys Unit, California Department of Water Resources, P. O. 
Box 388 , Sacramento , California 95802 — and for British Columbia by the Department of Lands, ^\ begins ! cnDu 

\ C>^*v SNUW oUKVti XjNV 



Forests and Water Resources, Water Resources Service, Parliament Building, Victoria, British Columbia 




WATER SUPPLY OUTLOOK 

FOR 

COLORADO AND NEW MEXICO 



and 

FEDERAL -STATE -PRIVATE COOPERATIVE SNOW SURVEYS 



Issued by 

R. M. DAVIS 

ADMINISTRATOR 
SOIL CONSERVATION SERVICE 
WASHINGTON. D C 



M. D. BURDICK 

STATE CONSERVATIONIST 
SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



Released by 



ALBERT W. HAMELSTROM 

STATE CONSERVATIONIST 
SOIL CONSERVATION SERVICE 
ALBUQUERQUE, NEW MEXICO 



JOHN PATRICK JORDAN 

DIRECTOR 
C S U 

EXPERIMENT STATION 



/// Cooperation with 

S. E. REYNOLDS 

STATE ENGINEER 
STATE OF NEW MEXICO 



C. J. KUIPER 

STATE ENGINEER 
STATE OF COLORADO 



Report prepared by 

JACK N. WASHICHEK, Snow Survey Supervisor 
BERNARD A. SHAFER, Assistant Snow Survey Supervisor 
JUDY R. TEILBORG, Statistical Assistant 



SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER. COLORADO 80217 



TABLE OF CONTENTS 

WATER SUPPLY OUTLOOK BY MAJOR WATERSHED AREAS 



WATERSHED I -SOUTH PLATTE RIVER WATERSHED 

Describes water supply conditions in Fort Collins, Big Thompson, Longmont, Boulder Valley, 
Jefferson, Teller-Park, Douglas County, Morgan, Kiowa, West Arapahoe, West Adams, East 
Adams, Platte Valley, Southeast Weld, and West Greeley Soil Conservation Districts. 



WATERSHED II -ARKANSAS RIVER WATERSHED 

Describes water supply conditions in Lake County, Upper Arkansas, Fremont, Custer County 
Divide, Fountain Valley, Black Squirrel, Horse-Rush Creek, Central Colorado, Turkey Creek, 
Pueblo, Bessemer, Olney Boone, Cheyenne, Upper Huerfano, Stonewall, Spanish Peaks, 
Purgatoire, Branson Trinchera, Western Baca, Southeastern Baca, Two Buttes, Bent, Timpas, 
Northeast Prowers, Prowers, Kiowa County, West Otero, East Otero, and Big Sandy 
Soil Conservation Districts. 



WATERSHED III -RIO GRANDE WATERSHED (COLORADO) 



Describes water supply conditions in Rio Grande, Center, Conejos, Mosca Hooper, 
Mt. Blanca, Sanchez, and Culebra Soil Conservation Districts. 



WATERSHED IV -RIO GRANDE WATERSHED (NEW MEXICO) 

Describes water supply conditions in Upper Chama, East Rio Arriba, Taos, Lindrith, Jemez, 
Santa Fe - Pojoaque, Sandoval, Tijeras, Cuba, and Edgewood Soil Conservation Districts. 



WATERSHED V -DOLORES, SAN JUAN, AND ANIMAS RIVERS WATERSHED 

Describes water supply conditions in San Miguel Basin. Dove Creek, Dolores, Mancos, LaPlata, 
Pine River, San Juan, San Miguel Basin, and Glade Park Soil Conservation Districts. 



WATERSHED VI -GUNNISON RIVER WATERSHED 



Describes water supply conditions in Delta, Gunnison, Cimarron, Shavano, and Uncompahgre 
Soil Conservation Districts. 



WATERSHED VII -COLORADO RIVER WATERSHED 

Describes water supply conditions in DeBeque, Plateau Valley, Lower Grand Valley, 
Bookcliff, Eagle County, Middle Park, Glade Park, Upper Grand Valley, South Side, and 
and Mt. Sopris Soil Conservation Districts. 



WATERSHED VIII -YAMPA, WHITE AND NORTH PLATTE RIVERS WATERSHED 

Describes water supply conditions in Yampa, Moffat, West Routt, East Routt, North Park, 
White River, and Douglas Creek Soil Conservation Districts. 



WATERSHED IX -LOWER SOUTH PLATTE RIVER WATERSHED 

Describes water supply conditions in Sedgwick, South Platte, Haxton, Peetz, Padroni, Morgan, 
Rock Creek,and Yuma Soil Conservation Districts. 



APPENDIX I -SNOW SURVEY MEASUREMENTS 



APPENDIX II 



-SOIL MOISTURE MEASUREMENTS 



WATER SUPPLY OUTLOOK 



as of 

APRIL 1, 19 76 




GENERALLY ADEQUATE A 
100% OR MORE £ 

LIMITED SHORTAGE ▼ 
75% - 100% 

SEVERE SHORTAGE 
75% OR LESS 



The map on this page indicates the most probable water supply as of the date of this report. Estimates 
assume average conditions of snow fall, precipitation and other factors from this date to the end of the fore- 
cast period. As the season progresses accuracy of estimates improve. In addition to expected streamflow, 
reservoir storage, soil moisture in irrigated areas, and other factors are considered in estimating water supply. 
Estimates apply to irrigated areas along the main streams and may not indicate conditions on small tributaries. 



WATER SUPPLY CONDITIONS 
as of 

APRIL 1, 1976 

FORECASTS OF WATER SUPPLIES ARE RELATIVELY UNCHANGED FROM LAST MONTH EXCEPT 
FOR NEW MEXICO WHERE FORECASTS WERE LOWERED. MOST OF COLORADO IS EXPECTED TO 
HAVE STREAMFLOW NEAR AVERAGE WITH TWO EXCEPTIONS. IN THE FRONT RANGE FROM 
CLEAR CREEK DRAINAGE IN THE SOUTH TO THE BIG THOMPSON DRAINAGE IN THE NORTH 
LIMITED WATER SHORTAGES ARE EXPECTED. STREAMS WITH HEADWATERS IN THE SAN JUAN 
MOUNTAINS SHOULD FLOW TEN TO TWENTY PERCENT ABOUT NORMAL. NEAR AVERAGE 
ACCUMULATIONS OF SNOW WERE RECEIVED DURING THE MONTH OF MARCH. THE MOUNTAIN 
SNOWPACK IS NOW VERY NEAR ITS MAXIMUM FOR THE SEASON. 




COLORADO — PROJECTED STREAMFLOW IS EXPECTED TO BE NEAR AVERAGE 
OVER MOST OF THE STATE. SNOWFALL IN THE MOUNTAINS DURING MARCH 
WAS NEAR NORMAL. A LOW SNOWPACK STILL EXISTS IN THE FRONT RANGE ON THE HEAD- 
WATERS OF CLEAR CREEK, ST. VRAIN, BOULDER, AND BIG THOMPSON DRAINAGES. SPRING 
AND SUMMER MELT-WATER FROM THE SAN JUAN MOUNTAINS SHOULD PRODUCE STREAMFLOW 
TEN TO TWENTY PERCENT ABOVE NORMAL BARRING ANY LARGE DEPARTURES FROM THE 
NORMAL SPRING PRECIPITATION PATTERN. RESERVOIR STORAGE IS AVERAGE FOR THIS 
TIME OF YEAR. SOIL MOISTURE IS FAIR TO POOR IN MOST IRRIGATED AREAS. 

/^\NEW MEXICO — STREAMFLOW FORECASTS ON STREAMS ORIGINATING IN 

NEW MEXICO HAVE DROPPED FROM LAST MONTH AS A RESULT OF SLIGHTLY 
BELOW AVERAGE SNOWFALL DURING MARCH. STREAMFLOW SHOULD RANGE FROM TWENTY-FIVE 
PERCENT BELOW NORMAL ON THE JEMEZ AND SANTA CRUZ DRAINAGES TO FIFTEEN PERCENT 
ABOVE ON THE RIO GRANDE. THE HIGHER FLOWS ON THE RIO GRANDE REFLECT THE GOOD 
SNOWPACK IN THE SAN JUAN MOUNTAINS OF COLORADO. SOIL MOISTURE IN VALLEY AREAS 
REMAINS POOR IN MOST AREAS. RESERVOIR STORAGE IS HIGHLY VARIABLE. 



<7 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

SOUTH PLATTE RIVER WATERSHED IN COLORADO 

as of 

APRIL 1, 19 76 



U. S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 



COLORADO 



J A C K S O 




SCALE IN MILES 

YOUR WATER SUPPLY 




LEGEND 



highway 
Drainage 
Town 

Watershed Boundar 



Generally Adequate 

100% or more 



Limited Shortage 
75% -1 00% 



Severe Shortage 
75% or less 



STREAMFLOW FORECASTS ON THE SOUTH PLATTE AND ITS NORTHERN TRIBUTARIES WERE 
LOWERED DUE TO DEFICIENT SNOWFALL DURING MARCH. FLOWS ARE NOT FORECASTED AS 
CRITICAL BUT SEVERAL ARE IN THE 70% RANGE. SNOW CAN BE EXPECTED TO ACCUMULATE 
FOR ANOTHER MONTH UNDER NORMAL CONDITIONS. CARRYOVER STORAGE IS SLIGHTLY 
ABOVE NORMAL. 



.This report prepared by. 



JACK N. WASHICHEK — BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



U.S. DEPARTMENT OF AGRICULTURE- SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 



FORECAST POINT 



FORE- 
CAST 



% of 
Average 



86 


107 




/, O 


85 


247 


72 


127 


80 


75 



Big Thompson River at Drake (1) 
Boulder Creek at Orodell 

Cache La Poudre River at Canyon Mouth (2) 
Clear Creek at Golden (3) 
St. Vrain Creek at Lyons (4) 



92 
36 
210 
92 
60 



(I ) Observed flou plus by-pass to power plants. (2) Observed flou minus trans— basin diversions plus municipal and irrigation diversions. (3) Observed flou minus 
diversion through August P. Gumlick Tunnel. (4) Observed flou plus change in storage in Price Reservoir. 



WATER SUPPLY OUTLOOK 



Expressed as "Poor. Fair. Average. Ex- 
cellent" With Respect to Usual Supply. 





Flow 


Period 


STREAM or AREA 


Spring 


Late 




Season 


Season 






Bear Creek 


Avg. 


Fair 


Coal Creek 


Fair 


Fair 


North Fork of South 


Fair 


Fair 


Platte 






North Fork of Cache 


Avg. 


Fair 


La Poudre 






Ralston Creek 


Fair 


Fair 


Rock Creek 


Fair 


Fair 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/' or 
SUB-WATERSHED 



Big Thompson 
Boulder 

Cache La Poudre 
Clear Creek 
Saint Vrain 
South Platte 



slumber of 
Courses 
Averaged 



THIS YEAR'S SNOW 
WATER AS PERCENT OF 



8b 
78 
99 
69 
75 
70 



91 
82 
104 
81 
82 
95 



RESERVOIR STORAGE (Thousand Ac. Ft.) END OF MONTH 



RESERVOIR 


Usable 
Capacl ty 


Usable Storage 


This 
Year 


Last 
Year 


Average 












Antero 


33 


16 


16 


14 


Barr Lake 


32 


27 


29 


25 


Black Hollow 


8 


5 


5 


4 


Boyd Lake 


44 


38 


37 


38 


Cache La Poudre 


10 


7 


7 


8 


Carter Lake 


109 


102 


107 


95 


Chambers Lake 


9 


3 


4 


3 


Cheesman 


79 


47 


44 


59 


Cobb Lake 


34 


16 


17 


15 


Eleven Mile 


98 


97 


97 


88 


Fossil Creek 


12 


7 


8 


8 


Gross 


43 


19 


19 


28 


Halligan 


6 


2 


6 


5 


Horsetoo th 


144 


121 


103 


111 


Lake Loveland 


14 


10 


10 


10 


Lone Tree 


9 


5 


6 


7 


Mariano 


5 


5 


5 


5 


Marshall 


10 


5 


7 


5 


Marston 


18 


14 


16 


15 


Milton 


24 


16 


15 


14 


S tandley 


42 


33 


32 


19 


Terry 


8 


6 


6 


5 


Union 


13 


11 


12 


10 


Windsor 


19 


15 


12 


12 



* 1958-1972 period. 



Return if no t del i vered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER. COLORADO 80217 



POSTAGE AND FEES PAID 
U S. DEPARTMENT OF 
AGRICULTURE 



FIRST CLASS MAIL 



-lb 



The Conservation of Water begins with the Snow Survey''' 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

ARKANSAS RIVER WATERSHED IN COLORADO 

as of 

APRIL 1, 19 76 



U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 




E W ME 
YOUR WATER SUPPLY 

STREAMFLOW IS FORECAST TO BE NEAR TO SLIGHTLY BELOW AVERAGE ON ALL STREAMS. 

SNOWFALL DURING MARCH WAS NEAR NORMAL. THE MOUNTAIN SNOWPACK IS NEAR MAXIMUM 

FOR THE SEASON AND WILL SOON BEGIN TO RELEASE ITS STORED WATER. SOIL MOISTURE 

IN IRRIGATED AREAS REMAINS POOR. CARRYOVER STORAGE IS MUCH BELOW NORMAL IN 

NEARLY ALL RESERVOIRS. 




.This report prepared by. 



JACK N. WASHICHEK— BERNARD A. SHAFER 
SNOW SURVEY UNIT. SOIL CONSERVATION SERVICE 
DENVER. COLORADO 



U.S. DEPARTMENT OF AGRICULTURE- SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 



FORECAST POINT 


CAST 


% of 
Average 


Average 




Arkansas River near Pueblo (1) 


300 


103 


290 


Arkansas River at Salida (1) 


320 


102 


313 


Cucharas River near La Veta 


10 


100 


10 


Huerfano River near Redwing 


14 


93 


15 


Purgatoire River at Trinidad 


34 


89 


38 



(l) Observed flow plus change in Clear Creek, Twin Lakes and Turquoise Reservoirs minus diversions through Busk Ivanhoe. B ous lead. Divide, Twin Lakes 
and Homestake Tunnels and twing. Front Pass, Wurtz and Columbine ditches. 



WATER SUPPLY OUTLOOK 



Expressed as "Poor. Fair, Average, E> 
cellent" With Respect to Usual Supply 



RESERVOIR STORAGE (Thousand Ac. Ft.) end of 



STREAM or AREA 



Apishapa River 
Fountain Creek 
Grape Creek 
Hardscrabble Creek 
Monument Creek 



Flow Period 



Spring 
Season 



Avg, 
Avg, 
Avg 
Avg 
Avg, 



Avg 
Avg 
Avg 
Avg 
Avg 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/ or 
SUB-WATERSHED 



Arkansas 
Cucharas 
Purgatoire 



Number of 
Courses 
Averaged 



10 

1 
1 



THIS YEAR'S SNOW 
WATER AS PERCENT OF 



69 
57 
58 



Average * 



97 
104 
94 



RESERVOI R 


Usable 
Capacity 


Usable Storage 


This 
Year 


Last 
Year 


A * 

Average 












Adobe 


62 


o 


o 




Clear Creek 


1 1 


4 


2 


8 


Cucharas 


40 


NA 


0 


3 


Great Plains 


150 


0 


0 


61 


Horse Creek 


27 


8 


0 


7 


John Martin 


354 


10 


8 


91 


Meredith 


42 


0 


0 


14 


Model 


15 


0 


0 


4 


Turquoise 


121 


45 


38 




Twin Lakes 


58 


17 


16 


26 


NA-Not Available 
















* 1958 


-1972 period. 



Return if not del i vered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER, COLORADO 80217 



POSTAGE AND FEES PAID 
U S DEPARTMENT OF 
AGRICULTURE 
AGR-IOI 



rmfiT PI inn urn 
iiiimI ywoy 



0-2b 



The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

UPPER RIO GRANDE WATERSHED IN COLORADO 

as of 

APRIL 1, 1976 



U. S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 




YOUR WATER SUPPLY 



THE SNOWFALL REMAINED ABOVE NORMAL DURING MARCH . FORECASTS ON THE RIO GRANDE 
STREAMS ARE ABOVE NORMAL EXCEPT ON THE EASTERN SIDE OF THE BASIN WHERE 
CULEBRA CREEK IS ONLY EXPECTED TO FLOW 90%. THIS SHOULD PROVIDE ADEQUATE 
WATER FOR ALL USERS. CARRYOVER STORAGE IS 124% OF NORMAL AND WILL PROVIDE A 
GOOD SUPPLEMENT. MORE SNOW COULD ACCUMULATE AT THE HIGHER LEVELS DURING APRIL. 



.This report prepared by. 



JACK N. WASHICHEK — BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



U.S. DEPARTMENT OF AGRICULTURE- SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 



FORECAST POINT 


FORE- 


% of 






CAST 


Average 


Average 


Alamosa Creek above Terrace Reservoir 


72 


116 


62 


Conejos River near Mogote (1) 


200 


109 


184 


Culebra Creek at San Luis (2) 


15 


88 


17 


Rio Grande at 30 Mile Bridge (3) 


130 


107 


121 


Rio Grande near Del Norte (3) 


525 


112 


468 


South Fork of Rio Grande at South Fork 


135 


117 


115 



(l) Observed flou plus change in storage in Platoro Reservoir. (2) Observed flow plus change in storage in Sanchez Reservoir. (3) Observed flou plus change in 
storage in Santa Maria, Rio Grande and Continental Reservoirs. 



WATER SUPPLY OUTLOOK 



Expressed as "Poor, Fair. Average. E> 
cellent" With Respect to Usual Supply 



STREAM or AREA 



Saguache Creek 
Sangre de Cristo Cr . 
Trinchera Creek 



Spring 
Season 



Avg. 
Avg. 
Avg. 



Avg 
Avg 
Avg 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/' or 
SUB- WATERSHED 


Number of 
Courses 
Averaged 


THIS YEAR'S SNOW 
WATER AS PERCENT OF 


Last Year 


Average •¥ 








Alamosa 


2 


83 


126 


Conejos 


3 


76 


110 


Culebra 


2 


59 


79 


Rio Grande 


10 


76 


121 


Return if not deli 


✓ ered 







UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER. COLORADO 80217 



RESERVOIR STORAGE (Thousand Ac. Ft.) END OF MONTH 



Continental 
Platoro 
Rio Grande 
Sanchez 
Santa Maria 
Terrace 

NA-Not Available 



Usable 
Capacity 



27 
60 
46 
103 
45 
18 



Usable Storage 



5 
14 
18 
NA 
10 
10 



POSTAGE AND FEES PAID 
U 5 DEPARTMENT OF 
AGRICULTURE 
AGR-IOI 



3 
19 
9 
7 

4 
5 



* 1958-1972 period. 



FIRST CLASS MAIL 



The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

RIO GRANDE WATERSHED IN NEW MEXICO 



as of 

APRIL 1, 19 76 



U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 



— *c 



COLORADO 




V 
-4 



A 




▼ 



■ 



* M 0 R A 



SAN 
' F e MIGUE L 




YOUR WATER SUPPLY 




LEGEND 

== Highway 



^ Drainage 
Town 

Watershed Boundar 



Generally Adequate 
100 % or more 



Limited Shortage 
75% -1 00% 



Severe Shortage 
75% or less 



0 10 20 3 0 40 
SCALE IN MILES 



THE SNOWPACK IN NEW MEXICO IS GENERALLY 
BELOW NORMAL. FLOWS WILL BE DEFICIENT ON 
=3eHE OF THE SMALL STREAMS. STREAMS 
ORIGINATING IN COLORADO ARE EXPECTED TO FLOW BETTER THAN NORMAL DUE TO THE 
GOOD SNOWPACK. CARRYOVER STORAGE IS GOOD. THE SNOW SEASON IS CONSIDERED TO 
BE OVER IN NEW MEXICO HOWEVER SOME HIGH ELEVATION ACCUMULATION COULD OCCUR. 



.This report prepared by _ 



JACK N. WASHICHEK — BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



U.S. DEPARTMENT OF AGRICULTURE- SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) March-July 



FORECAST POINT 


FORE - 








CAST 


Average 


Average 










LOSLllla L>ireGK. at ^(JbUJ — L-Ld V- 1 -/ 


15 


80 


19 


jeniez xviveir near jtiiutiz 


22 


76 


29 


Pecos River at Pecos 


"}5 




41 


Red River at Mouth near Questa 


? 5 


86 


29 


kio unaiua at jdx vaao 


200 


105 


190 


kio Lrranae at. utowi ^z,/ 


600 


114 


526 


Rio Grande at San Marcial (2) 


H- Z. _> 


120 


355 


Rio Hondo near Valdez 


12 


86 


14 


Santa Cruz River at Cundiyo 


10 


77 


13 



(1 ) Observed flow plus change in Costilla Reservoir. (2) Observed flow plus change in storage in El Vado and Abiquiu Reservoir . 



WATER SUPPLY OUTLOOK E c x e p , r ,: 


ssed as "Poor, F 
nt" With Respec 


air, Average, Ex- 
to Usual Supply. 




Flow 


Penod 


STREAM or AREA 


Spring 


Late 




Season 


Season 








Embudo Creek 


Fair 


Fair 


Mora River 


Fair 


Fair 


Nambe Creek 


Fair 


Fair 


Rio Ojo Caliante 


Fair 


Fair 


Rio Pueblo de Taos 


Fair 


Fair 


Santa Fe Creek 


Fair 


Fair 



RESERVOIR STORAGE (Thousand Ac. Ft.) END OF MONTH 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/ or 
SUB-WATERSHED 


Number of 
Courses 
Averaged 


THIS YEAR'S SNOW 
WATER AS PERCENT OF 


Last Year 


Average * 


Pecos 


1 


7 


15 


Red River 


2 


86 


144 


Rio Chama 


5 


39 


79 


Rio Grande, NM 


11 


47 


80 


Rio Hondo 









RESERVOIR 



Alamogordo 
Avalon 
Cabal lo 
Conchas 
El Vado 

Elephant Butte 
McMillan 



Usable 
Capacity 



111 

5 

344 
273 
195 
2195 
34 



Usable Storage 



2 
5 
44 
83 
130 
651 
16 



48 
1 

42 
132 

95 
445 

29 



* 1958-1972 period. 



Return i f no t del i vered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER, COLORADO 80217 



POSTAGE AND FEES PAID 
U S DEPARTMENT OF 
AGRICULTURE 



FIRST CLASS MAIL 



The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN 
WATERSHEDS IN COLORADO AND NEW MEXICO 



as of 
APRIL 1, 1976 



U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 



I 



LEGEND 




Highway 
Drainage 
Town 

Watershed Boundary 



Generally Adequate 
100 % or more 



Limited Shortage 
75% -100% 



Severe Shortage 
75% or less 



COLORADO 




10 20 30 40 



SCALE IN MILES 

YOUR WATER SUPPLY 

THE SNOWPACK THAT ACCUMULATED 



DURING FEBRUARY STILL REMAINS ABOVE 
NORMAL AND WILL PROVIDE ADEQUATE WATER 
SUPPLIES THIS SUMMER. ALL FORECASTS IN THE BASIN ARE HIGHER THAN THE 1958-72 
NORMAL. CARRYOVER STORAGE IS 118% OF NORMAL AND SHOULD BE A GOOD SUPPLEMENTAL 
SUPPLY. VALLEY SOIL MOISTURE IS REPORTED AS FAIR TO GOOD. 



-This report prepared by. 



JACK N. WASHICHEK— BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER. COLORADO 



U.S. DEPARTMENT OF AGRICULTURE- SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 



FORECAST POINT 


FORE- 
CAST 


% of 
Average 


Average * 










Animas River at Durango 


450 


111 
111 


/i 0 1 
4Zj 


Hn1 at"oc Pi irDY* nf Rn1 atdc 
UUlUlco I\.J-VfciL a. L UUlUIcij 


255 


I 1 A 

I I D 


9^9 
Z JZ 


T a "PI 3t*a Pi'iTor o -f- Uqctidt'iic 
La rXa.Ua. alvci a. I_ Hco^JcL U.O 


24 


1 9 1 
1Z 1 


9 A 

Z^T 


Los Pinos River at Bayfield (1) 


210 


1 1h 


1 QQ 

l y o 


llciLlL. <J i3 J\ivcl LLC-cLL lUWdL 


16 


1 1 A 

i m- 


1 A 

i^+ 


luLiow lu iNavajo River ^1 cy. z^ 


680 


1ZU 


J? / 


Pi d^t a rrooV at" A rKnl oc 
i:XeU.ici L<LfcifciK. d. L fllDUItiij 


215 


1 1 Q 
1 Ly 


1 QC 


San Juan River at Carracas 


400 


113 


354 


San Miguel River at Placerville 


i An 


108 


130 



(1 ) Observed flow plus change in storage in Vallicito Reservoir. (21 April - July 



WATER SUPPLY OUTLOOK 



Expressed as "Poor, Fair, Average, E> 
cedent" With Respect to Usual Supply 





Flow 


Period 


STREAM or AREA 


Spring 


Late 




Season 


Season 






Florida River 


Exc. 


Avg. 


Hermosa Creek 


Exc. 


Avg. 


West Dolores River 


Exc. 


Avg. 


Williams Creek 


Exc. 


Avg. 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/ or 
SUB-WATERSHED 



Animas 
Dolores 
San Juan 



Number of 
Courses 
Averaged 



THIS YEAR'S SNOW 
WATER AS PERCENT OF 



74 
61 

73 



117 
104 
118 



RESERVOIR STORAGE (Thousand Ac. Ft.) END OF MONTH 



RESERVOIR 



Groundhog 
Jackson Gulch 
Lemon 
Navaj o 
Vallecito 



Usable 
Capaci ty 



22 
10 
40 
1696 
126 



Usable Storage 

Last 
Year 



9 
6 

20 
1063 

60 



3 
5 

974 
30 



* 1958-1972 period. 



Return i f no t del i vered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER, COLORADO 80217 



PEr 



POSTAGE AND FEES PAID 
U S DEPARTMENT OF 
AGRICULTURE 

AGFt-lOl 



FIRST CLASS MAIL 



Sb 



The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

GUNNISON RIVER WATERSHED IN COLORADO 



as of 

APRIL 1, 1976 



U.S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 



M E S A 



COLORADO 




Limited Shortage 
75% -1 00% 



Severe Shortage 
75% or less 




SCALE IN MILES 

YOUR WATER SUPPLY 



SUMMER FLOW OF THE GUNNISON RIVER AND ITS TRIBUTARIES SHOULD BE ABOVE NORMAL 
THIS SHOULD PROVIDE ADEQUATE WATER TO ALL USERS. CARRYOVER STORAGE IS 120% 
OF NORMAL. BLUE MESA NOW CONTAINS 425,000 ACRE FEET. SOILS IN THE IRRIGATED 
AREA ARE REPORTED TO BE IN FAIR CONDITION. 



.This report prepared by. 



JACK N. WASHICHEK— BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



U.S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 



FORECAST POINT 


FORE- 
CAST 


% of 
Average 


* 

Average 


Gunnison River inflow to Blue Mesa Reservoir (1) 
Gunnison River near Grand Junction (2) 
North Fork of Gunnison (3) 
Surface Creek near Cedaredge 
Uncompahgre River at Colona 

(1 ) Observed flow plus change in storage in Taylor Reservoir. (2 ) Observed flow plus change in slorag 
(3) Observed flow plus change in storage in Paonia Reservoir. 


840 
1250 
280 
15 
140 

in Blue M esa, Mo 


106 
106 
106 
94 
104 

tow Point and Tay 


793 
1184 
263 
16 
134 

or Reservoirs . 



WATER SUPPLY OUTLOOK 



Expressed as "Poor, Fair, Average, Ex- 
cellent" With Respect to Usual Supply. 





Flow 


Period 


STREAM or AREA 


Spring 


Lace 




Season 


Season 






Ohio Creek 


Avg. 


Fair 


Slate River 


Avg. 


Fair 


Taylor River 


Avg. 


Fair 


Tomichi Creek 


Avg. 


Fair 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/ or 
SUB-WATERSHED 



Gunnison 
Surface Creek 
Uncompahgre 



Number of 
Courses 
Averaged 



12 

3 
3 



THIS YEAR'S SNOW 
WATER AS PERCENT OF 



Last Year 



72 
74 
70 



95 
92 
114 



RESERVOIR STORAGE (Thousand Ac. Ft.) 



END OF MONTH 



Usable 
Capacity 



Blue Mesa 
Morrow Point 
Tavlor 



830 
121 
106 



U sable Storage 



425 
115 
60 



336 
115 
50 



315 
114 
65 



* 1958-1972 per 



Return if not delivered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER, COLORADO 80217 



POSTAGE AND FEES PAID 
U- S. DEPARTMENT OF 
AGRICULTURE 



FIRST CLASS MAIL 



CO-6b 



"The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

COLORADO RIVER WATERSHED IN COLORADO 

as of 

APRIL 1, 1976 



U. S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 





YOUR WATER SUPPLY 

THE COLORADO RIVER SNOWPACK REMAINED ABOUT NORMAL DURING MARCH. NEAR NORMAL 
STREAMFLOWS SHOULD RESULT. FORECASTS ARE MADE ASSUMING NORMAL PRECIPITATION 
FOR THE REMAINDER OF THE YEAR. AT LEAST A MONTH OF POSSIBLE SNOW BUILD-UP 
REMAINS. CARRYOVER STORAGE IS SLIGHTLY ABOVE NORMAL. 





.This report prepared by. 



JACK N. WASHICHEK — BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER. COLORADO 



U.S. DEPARTMENT OF AGRICULTURE- SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 





FOR E - 


% of 


* 


FORECAST POINT 


CAST 


Average 


Average 








Blue River inflow to Dillon Reservoir 


1 JD 


80 


169 


Blue River inflow to Green Mountain Reservoir (1) 


o o rv 

ZoO 


94 


297 


Colorado River near Cameo (6) 


o o c rt 


99 


2370 


Colorado River near Dotsero (3) 




98 


1434 


Colorado River inflow to Granby Reservoir (2) 


ZZU 


96 


228 


Roaring Fork at Glenwood Springs (4) 


"7 1 tr 

/Id 


100 


713 


Williams Fork near Parshall (5) 


55 


87 


63 


Willow Creek inflow to Willow Creek Reservoir 


47 


100 


47 



(1) Observed flow plus diversions through Roberts Tunnel and change in storage in Dillon Reservoir. (2) Observed flow corrected for change in storage in Lake Granby 
as furnished by L'.S.B.R. and diversions by Adams Tunnel and Grand River Ditch. (3) Observed flow plus the changes as indicated in (I), (2) and (5) plus Moffat Ditch 
and change in H omestake, Williams Fork, Green V/j. and Willow Creek Reservoirs. (4) Observed flow plus diversions through Divide and Twin Lakes Tunnels dIus change 
in storage in Ruedi Reservoir. (5 ) Observed flow plus diversions through August P. Gumlick Tunnel. (6) Observed flow plus the changes as indicated in (3) and (4). 



WATER SUPPLY OUTLOOK \Z ent" With Respect to Usual Supply 



RESERVOIR STORAGE (Thousand Ac. Ft.) 





Flow 


Period 


STREAM or AREA 


Spring 
Season 


Late 
Season 




Brush 

Eagle River 
Gypsum Creek 


Avg. 
Avg. 
Avg. 


Avg. 
Avg. 
Avg. 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 
and/ or 
SUB-WATERSHED 


Number of 
Courses 
Averaged 


THIS YEAR'S SNOW 
WATER AS PERCENT OF 


Last Year 


Average ■¥ 










Blue River 


8 


76 


92 


Colorado 


20 


84 


94 


Plateau 


3 


76 


93 


Roaring Fork 


7 


76 


103 


Williams Fork 


3 


83 


93 


Willow 


2 


88 


97 



END OF MONTH 



Usable 
Capacity 



Dillon 
Granby 

Green Mountain 
Homes take 
Ruedi 
Vega 

Williams Fork 
Willow Creek 



254 
466 
139 
43 
101 
32 
97 
9 



Usable Storage 



225 
279 
58 
0 
55 
12 
42 
6 



209 
288 
62 
33 
54 
6 
34 
7 



1958-1972 period. 



Return if not delivered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER, COLORADO 80217 



POSTAGE AND FEES PAID 
U. S DEPARTMENT OF 
AGRICULTURE 



FIRST CUSS MAIL 



CO-7b 



"The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

YAMPA, WHITE, AND NORTH PLATTE RIVER WATERSHEDS 

IN COLORADO 

as of 
APRIL 1, 19 76 



U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 




- r 



h 



RAND 



1 < 



, ' 



10 20 



SCALE IN MILES 



COLORADO 





\ 9 I 


~C 6 V 

3 \ 


2 


/ 1 

) A 4 / 



Generally Adequate 

100% or more 



Limited Shortage 
75% -100% 



Severe Shortage 
75% or less 



YOUR WATER SUPPLY 

THE SNOWPACK IN NORTH CENTRAL AND NORTHWESTERN COLORADO IS JUST SLIGHTLY 



BELOW NORMAL. SUMMER FLOWS SHOULD STILL PROVIDE ADEQUATE WATER TO MOST 
USERS. EARLY SEASON FLOW SHOULD BE AT LEAST AVERAGE. SOIL MOISTURE 
CONDITIONS IN THE IRRIGATED AREAS ARE REPORTED AS FAIR. FORECASTS ARE 
BASED ON NORMAL CLIMATIC CONDITIONS FOR THE REMAINDER OF THE YEAR. AT 
LEAST ONE MORE MONTH REMAINS WHEN SNOW COULD ACCUMULATE AT HIGH ELEVATIONS 

.This report prepared by 



JACK N. WASHICHEK — BERNARD A. SHAFER 
SNOW SURVEY UNIT. SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



U.S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) April-September 





FORE- 


% of 




FORECAST POINT 


CAST 


Average 


Average "* 






Elk River at Clark 


180 


91 


1 QQ 
Ly o 


Laramie River near Woods 


127 


100 


1 97 


Little Snake River at Lily 


300 


93 


^9A 


North Platte River at Northgate 


216 


90 


9 An 

Z4U 


White River near Meeker 


285 


97 


9Q S 


Yampa River near Maybell 


790 


87 


905 


Yampa River at Steamboat Springs 


230 


84 


274 



WATER SUPPLY OUTLOOK 



Expressed as "Poor. Fair, Average. E> 
cedent" With Respect to Usual Supply 



SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 





Flow Period 


STREAM or AREA 


Spring 


Late 




Season 


Season 








Canadian River 


Avg. 


Avg. 


Hunt Creek 


Avg. 


Avg. 


Illinois River 


Avg. 


Avg. 


Michigan River 


Avg. 


Avg. 


Oak Creek 


Avg. 


Avg. 


Trout Creek 


Avg. 


Avg. 



RIVER BASIN 
and/ or 
SUB-WATERSHED 


Number of 
Courses 
Averaged 


THIS YEAR'S SNOW 
WATER AS PERCENT OF 


Last Year 


Average * 










Elk 


2 


72 


89 


Laramie 


3 


112 


105 


North Platte 


5 


89 


101 


White 


2 


82 


100 


Yampa 


6 


72 


87 



X- 1958-1972 period. 



Return i f no t del i vered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER. COLORADO 80217 



POSTAGE AND FEES PAID 
U S DEPARTMENT OF 
AGRICULTURE 
AGR-IOI 




FIRST CLASS MAIL 



CO-8b 



The Conservation of Water begins with the Snow Survey" 



WATER SUPPLY OUTLOOK 
FOR THE SOIL CONSERVATION DISTRICTS IN THE 

LOWER SOUTH PLATTE RIVER WATERSHED IN COLORADO 

as of 

APRIL 1, 1976 



U.S. DEPARTMENT OF AGRICULTURE • SOIL CONSERVATION SERVICE 

CSU EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO 




SNOWFALL WAS LIGHT DURING MARCH OVER ALL OF THE SOUTH PLATTE BASIN. 
FORECASTS WERE DROPPED BELOW NORMAL ON THE MAINSTEM AND ALL THE NORTHERN 
TRIBUTARIES. EXPECTED STREAMFLOW RANGES BETWEEN 70% AND 97% OF THE 15-YEAR 
NORMAL. EARLY FLOWS SHOULD BE ABOUT NORMAL, BUT LATE SEASON FLOWS WILL BE 



LOW, EXP EC I ALLY BELOW GREELEY. CARRYOVER RESERVOIR STORAGE IS NORMAL. 



report prepared by. 



JACK N. WASHICHEK— BERNARD A. SHAFER 
SNOW SURVEY UNIT, SOIL CONSERVATION SERVICE 
DENVER. COLORADO 



U.S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE 



STREAMFLOW FORECASTS (1000 Ac. Ft.) A P rii-Se P tembe, 



FORECAST POINT 


FORE- 
CAST 


% of 
Average 


Average* 


Ri n TTinrrm cnn Ri iror a(- Tl"*"atre> ill 
j_ iiu my oyj ll ixj-vci. a. u u l ct rvc v.-"-/ 


Q 9 


OD 


1U / 






7^ 

/ J 


/, Q 


faoVio T a PnnHro Ri iror at" fanvnn Mniit~Vi I 9 i 
udLllc J_ic± r u uu I. c uivcL a. L o clli y uu in_» i_i (_ ii \t- J 


9AH 


Q7 


0 /. 7 


Clear Creek at Golden (3) 


89 


70 


127 


Saint Vrain Creek at Lyons (4) 


60 


80 


75 



(1 ) Observed flow plus by— pass to power plants. (2) Observed flow minus trans— basin diversions plus municipal and irrigation diversions. (3) Observed (low minus 
diversion through August P. Gumlick Tunnel. (4) Observed flow plus change in storage in Price Reservoir. 



WATER SUPPLY OUTLOOK 



Expressed as "Poor, Fair, Average. E> 
cellent" With Respect to Usual Supply 



RESERVOIR STORAGE (Thousand Ac. Ft.) end of 





Flow Period 


STREAM or AREA 


Spring 
Season 


Late 
Season 








South Platte from 


Fair 


Poor 


Greeley to Fort 






Morgan 






South Platte from 


Fair 


Poor 


Fort Morgan to 






Sterling 






South Platte below 


Fair 


Poor 


Sterling 







SUMMARY of SNOW MEASUREMENTS 

(COMPARISON WITH PREVIOUS YEARS) 



RIVER BASIN 


Number of 


THIS YEAR'S SNOW 


and/ or 


Courses 


WATER AS PERCENT OF 


SUB- WATERSHED 


Averaged 


Last Year 


Average* 










Big Thompson 


5 


86 


91 


Boulder 


3 


78 


82 


Cache La Poudre 


7 


99 


104 


Clear Creek 


6 


69 


81 


Saint Vrain 


3 


75 


82 


South Platte 


3 


70 


95 



Return i f no t del i vered 
UNITED STATES DEPARTMENT OF AGRICULTURE 
SOIL CONSERVATION SERVICE 
SNOW SURVEY UNIT 
P.O. BOX 17107 
DENVER. COLORADO 80217 



RESERVOIR 


Usable 
Capacity 


Usable Storage 


This 
Year 


Last 
Year 


Average* 






Carter 


109 


102 


107 


95 


Cheesman 


79 


47 


44 


59 


Eleven Mile 


98 


97 


97 


88 


Empire 


38 


32 


32 


33 


Horsetooth 


144 


121 


103 


111 


Jackson 


35 


32 


32 


34 


Julesburg 


28 


23 


23 


22 


Point of Rocks 


70 


69 


71 


66 


Prewitt 


33 


27 


27 


23 


Riverside 


58 


58 


52 


58 








* 1958 


-1972 period. 



POSTAGE AND FEES PAID 
U S DEPARTMENT OF 
AGRICULTURE 

AGR-lOl 



FIRST CLASS MAIL 



CO-9b 



The Conservation of Water begins with the Snow Survey" 



APPENDIX I 
SNOW COURSE MEASUREMENTS as of april i, 1976 



NORTH PLATTE BASIN 
Laramie River 

Deadman Hill 

Mclntyre 

Roach 
North Platte River 

Cameron Pass 

Columbine Lodge 

Northgate 

Park View 

Willow Cr. Pass (B) 
SOUTH PLATTE BASIN 

Boulder Creek 

Baltimore 

Boulder Falls 

University Camp 
Big Thompson River 

Deer Ridge 

Hidden Valley 

Lake Irene (B) 

Long' s Peak 

Two Mile 

Cache La Poudre 
Bennett Creek 
Big South 
Cameron Pass 
Chambers Lake 
Deadman Hill 
Hourglass Lake 
Joe Wright 
Lost Lake 
Red Feather 

Clear Creek 
Baltimore (B) 
Berthoud Falls 
Empire 

Grizzly Peak (B) 
Loveland Lift 
Loveland Pass 

St. Vrain River 
Copeland Lake 
Ward 

Wild Basin 
South Platte River 
Como 

Geneva Park 

Horseshoe Mt. 

Hoosier Pass 

Jefferson Creek 

Mosquito 

Trout Creek Pass 

ARKANSAS BASIN 
Arkansas River 
Bigelow Divide 
Cooper Hill (B) 
East Fork 
Four Mile Park 
Fremont Pass 
Garfield 
Hermit Lake 
Monarch Pass 
Tennessee Pass 
Twin Lakes Tunnel 
Westclif f e 



NOTE: NS - No Survey 

(B) - On Adjacent Drainage 









~Y PAST R 












WATER C 




°OF E 


DEPTH 


WATER 
CONTENT 






SURVEY 


(INCHES) 


(INCHES) 


LAST 


« C 












58-72 












3/31 


49 


15 


3 


14.2 


16.8 


3/28 


40 


1 1 


3 


11.1 


10.8 


3/28 


67 


21 


5 


17.8 


18.2 


3/29 


84 


33 


8 


31.9 


28 . 7 


3/25 


58 


20 


3 


29.5 


24 . 0 


3/29 


22 


5 


6 


5.8 


6.5 


3/30 


34 


9 


7 


10 . 7 


9.2 


3/30 


41 


12 


2 


14.0 


12.7 


3/29 


21 


5 


6 


7.7 


6.8 


1 1 9 0. 


40 


11 


8 


14.0 


13.4 


3/29 


58 


15 


0 


20.0 


19.3 


3/29 


20 


4 


6 


5 . 2 


4.8 


3/30 


38 


10 


9 


10 . 1 


10.5 


3/28 


59 


19 


5 


21.6 


20.9 


3/29 


39 


8 


9 


13.5 


10.9 


3/30 


46 


12 


8 


15 . 3 


15.1 


3/30 


28 






6.4 





3/29 


3 


Q 




2 . 6 


2.1 


3/29 


84 


33 


g 


31.9 


28.7 


3/29 


29 


9 


9 


12.1 


9.6 


3/31 


49 


15 


3 


14 . 2 


16.8 


3/30 


27 


7 


6 


6. 6 


6.7 


3/29 


72 


23 


4 


26.6 





3/29 


40 


11 


9 


12.9 


11.8 


-a / -a i 
J/ Ji 


24 


7 


Q 


6.3 


6 . 9 


3/29 


21 


5 


6 


7.7 


6.8 


3/29 


38 


10 


4 


17.4 


13.6 


3/29 


25 


6 


4 


10.4 


7 . 8 


3/26 


51 


15 


3 


22.3 


18.9 


3/26 


50 


15 


1 


20.8 


21.1 


3/26 


45 


15 


1 


19.6 


15 . 7 


3/29 


16 


3 


3 


6.3 


4.4 


3/30 


27 


5 


1 


5.9 


6.5 


3/29 


37 


9 


8 


12.2 


11.2 


3/30 


27 


6 


6 


8.9 




3/27 


16 


3 


6 


5.0 


3.8 


3/29 


38 


9 


6 


16.2 





3/31 


42 


11 


7 


17.5 


12.9 


3/30 


35 


9 


4 


12.9 


9.2 


3/30 


31 


8 


4 


14.2 





3/29 


22 


4 


7 


6.7 





3/29 


33 


8 


2 


9.5 


6.5 


4/02 


41 


11 


1 


14.4 


11.3 


3/30 


34 


9 


7 


12.3 


9.8 


3/30 


26 


6 


9 


10.4 


5.1 


3/30 


56 


16 


9 


18.2 


16.2 


3/31 


33 


10 


8 


19.9 


13.0 


3/30 


37 


7 


8 


16.1 




3/31 


44 


12 


9 


24.4 


17.1 


3/30 


38 


10 


8 


13.5 


10.6 


3/26 


36 


10 


0 


14.8 


10.7 


3/30 


28 


6 


4 


13.2 


6.3 





^ CURRENT INFORMATION 


1 


^ PAST BECDOD ^ 




DATE 






*ATER CONTENT 


SNOW COURSE 


OF 


OEPTH 


CONTE 


NT 


(INCHES) 






(INCHES) 


(INCHES) 


LAST 














YEAR 


58-72 














Cucharas River 














Ap ishapa 


3/30 


26 


g 




10.6 





Cucharas Creek 


3/30 


42 


10 


.0 


12.9 





La Veta Pass (B) 


3/30 


36 


7 


.7 


13.4 


7.4 


• 

Purgatoire River 














Bourbon 


3/30 


34 


6 


.6 


11.3 


7.0 


RIO GRANDE BASIN-COLO 














Alamosa River 














Silver Lakes 


4/01 


21 


6 


.7 


10 . 3 


5 . 3 


Summitville 


3/29 


76 


23 


. 4 


25.8 


1 O . 0 


Conejos River 














Cumbres 


3/26 


52 


18 


.5 


24 . 5 


18.0 


La Manga 


3/26 


63 


21 


.0 


27.6 




Platoro 


3/30 


64 


20.3 


99 /. 


1 A 9 
10. J 


River Springs 


3/30 


12 


3 


.8 


9 . 4 


4 . 6 


Culebra River 














Brown Cabin 


3/31 


5 


1 


.6 


12.2 





Cottonwood (B) 


NS 














Culebra 


3/30 


38 


7 


.7 


12.6 


8.4 


La Veta Pass (B) 


i / in 

JI JU 


JO 


7 


.7 


13.4 


7.4 


Trinchera (B) 


3/31 


32 


7 


.7 


10.5 





Rio Grande 














Cochetopa Pass 


3/29 


23 


5 


.0 


9.6 


5.9 


Grayback 


3/29 


64 


20 


.0 


21.7 




Hiway 


3/29 


93 


29 


.6 


9./, 7 


9 7 P. 

iJ.O 


Lake Humphrey 


3/31 


29 


9 


.5 


10.8 


6.1 


Love Lake 


3/30 


38 


12 


.1 


14.3 




Pass Creek 


3/29 


50 


15 


.9 


18.2 


9.8 


Pool Table 


3/30 


25 


5.8 


6.4 


6.1 




3/29 


36 


10 


.4 


16.7 


10.5 


Santa Maria 


3/ 30 


13 


3 


.2 


10.6 


3.6 


Upper Rio Grande 


3/30 


29 


8 


.7 


14.2 


7.5 


Wolf Creek Pass 


3/29 


96 


33 


.2 


39.4 


25.5 


Wolf Cr. Summit (B) 


3/ 20 


102 


32 


.0 


41 . 6 


28.3 


RIO GRANDE BASIN-NM 














Pecos River 














Panchuela 


3/29 


2 


0 


3 


4 . 1 


2.0 


Rio Chama 














Bateman 


51 Id 


34 


11 


4 


17.1 


11.7 


Capulin 


3/26 


1 


0 


5 


7.2 


2.7 


Capulin Peak 


3/26 


4 


1 




7.5 


3.4 


Chama Divide 


3/26 


u 


0 


0 


6.7 


1.7 


Chamita 


1 / 9/. 

J/ Z4 


ZD 


8 


2 


16.4 


7.2 


Rio Grande 














Alamitos 


3/26 


10 


3 


9 


10.4 





Big Tesuque 


3/30 


12 


2 


8 


8.8 


4.6 


Cordova 


3/26 


34 


8 


9 


11.5 


10.1 


Elk Cabin 


3/29 


5 


1 


1 


3.5 


2.5 


Hopewell 


3/23 


53 


19 


7 


20.5 





La Cueva 


3/29 


6 


1 


8 


10.7 





Pajarito 


3/ 30 


0 


0 


0 


0.2 


0.0 


P3.j3.rito PgsIc 


9 / in 
j7 jU 


0 


0 


0 


2 . 1 


0 . 3 


Palo 


3/30 


27 


8. 


0 


9 . 7 




Payrole 


3/29 


19 


6 


0 


13.6 


6 . 8 


Quemazon 


3/31 


21 


5 . 


7 


14 .4 


9 . 0 


Rio En Medio 


3/30 


27 


6. 


8 


12 4 


7 4 


Sandoval 


3/31 


8 




1 


8.6 


4.2 


Senorita Divide 


3/30 




1. 


1 


12.9 




Taos Canyon 


3/30 


18 


4. 


9 


7.4 


3.9 


Tres Ritos 


3/26 


14 


4. 


6 


8.0 


4.8 


Rio Hondo 














Taos Powderhorn 


3/31 


79 


29. 


7 


32.1 




Red River 














Hematite Park (B) 


3/29 


19 


4. 


3 


6.1 


3.5 


Red River 


3/29 


29 


8. 


8 


9.2 


5.6 


Red River #2 


3/30 


26 


8. 


0 


9.1 





GPO 834-493 



SNOW COURSE MEASUREMENTS as of april i, 1976 

















DATE 


SNOW 




" c 


Ses> EN 


SNOW COURSE 


OF 


DEPTH 












(INCHES) 


















58-72 














SAN JUAN-DOLORES BASIN 












Animas River 












Cascade 


3/30 


40 


15.1 


19.5 


10.2 


Lemon #2 


3/31 


24 


8.7 


19.4 





Mineral Creek 


3/30 


46 


15.8 


24.6 


15.4 


Mo las Lake 


3/30 


40 


14.6 


20.0 


12.6 


Purgatory 


3/30 


62 


23.6 


31.1 





Red Mt. Pass (B) 


3/30 


87 


32.8 


41.5 


31.5 


Silverton Sub-Sta. 


3/30 


25 


9.8 


13.5 


5.2 


Spud Mountain 


3/ 30 


65 


26 .9 


36. 1 


23 . 1 


Dolores River 












Lizard Head 


3/29 


51 


17.8 


25.8 


17.2 


Lone Cone 


3/30 


56 


20.6 


22.1 





Ophir Loop 


3/29 


46 


12.0 








Rico 


3/29 


15 


4.6 


12.2 


6.1 


Telluride 


3/ 29 


25 


8.0 


13.5 


6.5 


Trout Lake 


3/29 


44 


14.7 


22.6 


13.7 


San Juan River 












unama uivicie 1,0^ 


3/26 


0 


0.0 


6 . 7 


1 . 7 


LnamiLa {dj 


3/24 


26 


8 . 2 


16.4 


7 . 2 


bpper San Juan 


3/29 


98 


34 . 2 


43.5 


28. 6 


Wolf Cr. Pass (B) 


3/29 


96 


33. 2 


39 .4 


25.5 




3/29 


102 


32.0 


41.6 


28 . 3 


GUNNISON BASIN 












Gunnison River 












Alexander Lake 


3/30 


58 


21. 1 


26.5 


22.8 


Blue Mesa 


3/30 


28 


8.1 


11.7 


7 . 2 




3/31 


41 


14.0 


17.9 




Cochetopa Pass CB) 


3/29 


23 


5.0 


9.6 


5.9 


Crested Butte 


3/31 


43 


14.2 


18.0 


13.0 


Keystone 


3/31 


53 


19.5 


25.3 


20.0 


Lake City 


3/30 


27 


7.0 


10.7 


8.0 


Mesa Lakes (B) 


3/25 


46 


15.3 


22.5 


17.6 


McClure Pass 


3/30 


47 


16.9 


22.6 


15. 1 


Park Cone 


3/30 


40 


11.3 


12.7 


10 .6 


Park Reservoir 


3/26 


74 


22.5 


30 . 1 


23 . 8 


Porphyry Creek 


3/31 


5 1 


1 /. i 
1^.1 


22.6 


16.9 


Tomichi 


J/ Jl 


TO. 

jy 


1U . J 


1 ft 1 

10. z 


1 Z . 0 


Surface Creek 












Alexander Lake 


3/30 


58 


21.1 


26.5 


22.8 


Mesa Lakes 


3/25 


46 


15.3 


22.5 


17.6 


Park Reservoir 


3/26 


74 


22.5 


30.1 


23.8 


Uncompahgre River 












Ironton Park 


3 /30 


44 


14.3 


23 . 7 


10.2 


Red Mountain Pass 


3/30 


87 


32 . 8 


41.9 


31.5 


lellUlLQc V^/ 


3/29 


25 


8 . 0 


13.5 


6 . 5 


COLORADO BASIN 












Blue River 












Blue River 


3/31 


29 


8.0 


10.8 


8.5 


Fremont Pass 


3/30 


56 


16.9 


18.2 


16.2 


Frisco Pass 


3/26 


26 


6.8 


10.6 


7.4 


Grizzly Peak 


3/26 


51 


15.3 


22.3 


18.9 


Hoosier Pass (B) 


3/31 


42 


11.7 


17.5 


12.9 


Shrine Pass 


3/30 


57 


16.7 


20.9 


18.1 


Snake River 


3/26 


25 


7.0 


8.7 


7.9 


Summit Ranch 


3/31 


24 


6.6 


8.5 


7.1 



NOTE: NS - No Survey 

(B) - On Adjacent Drainage 



I 





^ CURRENT INFQR 




r o AS t 5ECC = : ^ 




Date 


SNOW 


WATER 


WATER CCN'ES - 

(INCHES) 


SNOW COURSE 


OF 


DEPTH 


CONTENT 






SURVEY 


(INCHES) 


(INCHES) 


LAST 


AVG 










YEA * 


58-72 














Colorado River 














3/ 30 


46 


13.9 


16.2 


13.2 


Berthoud Pass 


3/30 


48 


14.0 


15.9 


15.9 


Berthoud S urnm i r. 


3/ 29 


55 


16 . 1 


19.2 


19.7 


Cooper Hill 


4/02 


41 


11 . 1 


14.4 


11.3 


riUUlcL uUlLiL 


4/01 


47 


13.5 


16.6 


14.5 


Glenmar Rancli 


3/30 


30 


8.8 


10.4 


8.5 


(Zr\ TP Pace 
VjnJ Lc r aba 


3/31 


34 


11.5 


13.4 


10.2 


Grand Lalce 


3/28 


31 


8.0 


8.8 


8.2 


Lalte Irene 


3/28 


59 


19 .5 


21.6 


20.9 


Lap land 


3/30 


28 


8.0 


11.3 


10.4 


Lulu 


3/31 


59 


19.4 


21.6 


18.7 




3/31 


42 


13.8 


16.8 


12.8 


MctCenzie Gulch 


3/30 


24 


6.8 


9 . 2 


5 . 0 


Middle Fork 


3/30 


31 


8.7 


10.9 


9 . 9 


Milne r 


3/28 


36 


11.3 


12.6 


13.6 


North Inlet 


3/29 


26 


7.2 


8 . 6 


8 . 7 


Pan do 


3/30 


35 


9.7 


13.1 


10 . 3 


Phantom Valley 


3/28 


28 


8.3 


10 . 3 


10.8 


Ranch Creek 


3/30 


36 


8.6 


9 . 2 


9 . 9 


Tennessee Pass (B) 


3/30 


38 


10.8 




1 n a 
1U . 0 


Vail Pass 


Destr 


oyed 





18.6 


17.3 


Vasquez 


3/30 


43 


11.7 


12.8 


12.9 


Roaring Fork 












Aspen 


3/28 


58 


18.7 


21.4 


17.1 


Independence Pass 


3/26 


47 


15.0 


20.2 


17.5 


Ivanho e 


3/29 


62 


18.1 


21.7 


18.1 


Kiln 


3/29 


48 


13.7 


16.8 





Lift 


3/28 


52 


17.0 


26.3 


17.8 


Mrfl nro Pace 


3/30 


47 


16.9 


22.6 


15.1 


Nast 


3/29 


0/. 

Z4 


6.5 


9.9 


5.6 


North Lost Trail 


3/30 




16.3 


19 .8 


14.6 


Williams Fork River 












Glenmar Ranch 


3/30 


30 


8 . 8 


10.4 


8.5 


Jones Pass 


3/30 


50 


14.0 


16.7 


15.5 


Middle Fork 


3/30 


31 


8.7 


10 . 9 


9 . 9 


Willow Creek 












Granby 


. 

3/ 30 


ZD 


7.3 


8 . 1 


7 . 5 


Willow Cr. Pass 


3/30 


41 


12.2 


14 . 0 


12.7 


Plateau Creek 












Mesa Lakes 


. 

3/ 25 


46 


15.3 


22.5 


17.6 


Park Reservoir 


3/26 


74 


22.5 


30 . 1 


23.8 


Trickle Divide 


3/26 


80 


25.0 


30 . 2 


25 .9 


YAMPA BASIN 












Elk River 












Elk River 


3/25 


47 


15 .4 


21.2 


17.8 


Hahn's Peak 


3/25 


40 


12 . 7 


17.9 


13 . 7 


White River 












Burro Mountain 


3/30 


56 


19.1 


21.9 


17.2 


Rio Blanco 


3/29 


46 


13.9 


18.3 


15.7 


Yampa River 












Bear River 


3/26 


42 


11.6 


13.7 


11.2 


Columbine (B) 


3/25 


58 


20.3 


29.5 


24.0 


Crosho 


3/26 


46 


13.4 


16.5 




Dry Lake 


3/29 


53 


17.0 


23.1 


20.0 


Lynx Pass (B) 


3/31 


42 


13.8 


1 fs ft 

ID .0 


12 8 


Rabbit Ears 


3/25 


59 


19.4 


30.0 


25.9 


Tower 


3/29 


114 


40.2 


54.5 




Yampa View 


3/25 


41 


12 . 6 


18.4 


14.6 



LIST of COOPERATORS 



The following organizations cooperate in snow surveys for the Colorado, 
Platte, Arkansas and Rio Grande watersheds. Many other organizations 
and individuals furnish valuable information for the snow survey reports. 
Their cooperation is gratefully acknowledged. 

STATE 

Colorado State Engineer 
New Mexico State Engineer 
Nebraska State Engineer 

Colorado State University Experiment Station 

Rocky Mountain Forest and Range Experiment Station 

FEDERAL 

Department of Agriculture 

Forest Service 

Soil Conservation Service 

Department of Interior 

Bureau of Reclamation 
Geological Survey 
National Park Service 
Indian Service 

Department of Commerce 

NOAA, National Weather Service 
Defence Department 

Army Engineer Corps 

Atomic Energy Commission 

INVESTOR OWNED UTILITIES 

Colorado Public Service Company 
Public Service Company of New Mexico 

MUNICIPALITIES 

City of Denver City of Greeley 

City of Boulder City of Fort Collins 

WATER USERS ORGANIZATIONS 



Arkansas Valley Ditch Association 
Colorado River Water Conservation District 

IRRIGATION PROJECTS 

Farmers Reservoir and Irrigation Company 
San Luis Valley Irrigation District 
Santa Maria Reservoir Company 
Costilla Land Company 

Uncompahgre Valley Water Users' Association 
Twin Lakes Reservoir and Canai Company 
Trinchera Irrigation Co. 




GO 



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