Historic, Archive Document
Do not assume content reflects current
scientific knowledge, policies, or practices.
WAT€R SUPPLY OUTLOOK
FOJt
COLORADO AND NEW MEXICO
Prepared bv
U. S. DEPARTMENT of AGRICULTURE ★ SOIL CONSERVATION SERVICE
Collaboratino- with
COLORADO AGRICULTURAL EXPERIMENT STATION
STATE ENGINEER of COLORADO
and STATE ENGINEER of NEW MEXICO
Data included in this report were obtained bv the agencies
named above in cooperation with the Bureau of Reclamation,
L .S. Forest Service. National Park Ser\ice. Corps of Engin-
eers and other Federal. State and private organizations.
IIIIIIIIIIIIIIIIAS OFIIIillllllllllll|||
APR. 1, 1971
llllllllllllllillllilillilllllllllillllilillilllllllll
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 Columbis 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 of 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.
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, Western Regional Technical Service Center,
Room 209, 701 N. W. Glisan, 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
ADDRESS
Alaska
P. O. Box "F", Palmer, Alaska 99645
Arizona
6029 Federal Building, Phoenix, Arizona 85025
Colorado (N. Mex.)
12417 Federal Building, Denver, Colorado 80202
Idaho
Room 345, 304 N. 8th. St., Boise, Idaho 83702
Montana
P. O. Box 970, Bozeman, Montana 59715
Nevada
P. O. Box 4850, Reno Nevada 89505
Oregon
1218 S. W. Washington St., Portland, Oregon 97205
Utah
4012 Federal BIdg., 125 South State St., Salt Lake City, Utah 84111
Washington
360 U.S. Court House, Spokane, Washington 99201
Wyoming
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,
Forests and Water Resources, Water Resources Service, Pari lament Building, Victoria, British ColumbiaN^;
WATER SUPPLY OUTLOOK
FOR
COLORADO AND NEW MEXICO
and
FEDERAL - STATE - PRIVATE COOPERATIVE SNOW SURVEYS
Issued by
KENNETH E. GRANT
ADMINISTRATOR
SOIL CONSERVATION SERVICE
WASHINGTON. D.C.
Illlllll
M. D. BURDICK
STATE CONSERVATIONIST
SOIL CONSERVATION SERVICE
DENVER, COLORADO
Released by
KENNETH L. WILLIAMS
STATE CONSERVATIONIST
SOIL CONSERVATION SERVICE
ALBUQUERQUE. NEW MEXICO
DONALD F. HERVEY
DIRECTOR
C S U
EXPERIMENT STATION
In Cooperation n ith
S. E. REYNOLDS
STATE ENGINEER
STATE OF NEW MEXICO
C. J. KUIPER
STATE ENGINEER
STATE OF COLORADO
Report prepared b\
JACK N. WASHICHEK, Snow Survey Supervisor
and
RONALD E. MORELAND, Assistant Snow Survey Supervisor
SOIL CONSERVATION SERVICE
SPRUCE HALL
COLORADO STATE UNIVERSITY
FT. COLLINS. COLORADO 80521
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, OIney Boone, Cheyenne, Upper Huerfano, Stonewall, Spanish Peaks,
Purgatoire, Branson Trinchera, Western Baca County, Southeastern Baca County, Two Buttes,
Bent, Timpas, Northeast Prowers, Prowers, West Otero, East Otero, and Big Sandy Soil
Conservation Districts.
WATERSHED III -RIO GRANDE WATERSHED (COLORADO)
Describes water supply conditions in Rio Grande, Center, Mosca Hooper, Mt. Blanco, Sanches,
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, 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, Lower Grand Valley, Bookcllff, Eagle County,
Middle Park, Glade Park, Upper Grand Valley, Plateau Valley, South Side, 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, Upper
White River, Lower 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, 1971
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, 1971
WATER SUPPLIES WILL VARY GREATLY OVER COLORADO AND NEW MEXICO THIS
SUMMER. NORTHERN COLORADO SHOULD HAVE EXCELLENT WATER SUPPLIES. FORECASTS
ARE 100 TO 130% OF NORMAL. THE MIDDLE AREAS OF COLORADO, THE ARKANSAS, THE
COLORADO AND THE GUNNISON RIVERS SHOULD HAVE NEAR NORMAL WATER. THE SOUTHERN
PORTION OF COLORADO AND NORTHERN AND CENTRAL NEW MEXICO HAVE VERY POOR WATER
PROSPECTS. COLORADO HAS GOOD TO FAIR CARRY-OVER STORAGE. SOILS IN THE
IRRIGATED AREAS OF NEW MEXICO ARE REPORTEDLY IN POOR CONDITION. COLORADO
REPORTS GOOD CONDITIONS.
~ THE SNOW PACK IN NORTHERN COLORADO IS EXCELLENT. SOME
COLORADO
SNOW COURSES ARE THE MAXIMUM OF RECORD. BOTH THE EAST AND WEST
SLOPES OF NORTHERN COLORADO SHOULD ENJOY ONE OF THE BEST WATER YEARS ON RECORD.
THE COLORADO RIVER SHOULD SUPPLY ADEQUATE WATER TO ALL ITS USERS. GENERALLY
THE ARKANSAS AND GUNNISON RIVERS SHOULD PRODUCE NEAR NORMAL WATER SUPPLIES.
THE SOUTHERN PORTION OF THE STATE, THE RIO GRANDE AND THE SAN JUAN BASINS, CAN
PLAN ON A DRY SUMMER. UNLESS SUMMER RAINS ARE PLENTIFUL, WATER SHORTAGES WILL
OCCUR. CARRY-OVER STORAGE IS GOOD ESPECIALLY IN THE SOUTH PLATTE BASIN.
^ McvA/ ..nrv.^^ ~ WATER SUPPLIES THIS SUMMER COULD BE AMONG THE LOWEST
/^^\ NEW MEXICO
ON RECORD. PRACTICALLY NO SNOW IS LEFT IN NEW MEXICO. NEW
MEXICO STREAMS ORIGINATING IN COLORADO WILL HAVE A POOR START. ALL FORECASTS
ARE WELL BELOW NORMAL. RESERVOIR CARRY-OVER STORAGE IS NEAR NORMAL. UNITS
WITH DIRECT FLOW RIGHTS ON NEW MEXICO'S MAJOR STREAMS, AND NO STORAGE WILL HAVE
A PARTICULARLY POOR YEAR. THE FLOW PEAKS WILL BE LOW AND LAST ONLY A SHORT
PERIOD. LATER SUMMER FLOW WILL BE REDUCED UNLESS SUMMER RAINS ARE BOUNTIFUL.
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
SOUTH PLATTE RIVER WATERSHED IN COLORADO
as of
April 1, 1971
U.S. DEPARTMENT OF AGRICULTURE • SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
WATER USERS ON THE UPPER SOUTtl PLATTE AND ALL THE NORTHERN TRIBUTARIES
SHOULD HAVE ONE OF THE BEST WATER YEARS ON RECORD. ALL STREAMFLOWS ARE BEING
FORECASTED ABOVE NORMAL. CARRY-OVER STORAGE IN THE AREA'S MANY RESERVOIRS IS
136% OF THE 15 YEAR AVERAGE. THIS WILL PROVIDE AN EXCELLENT SUPPLEMENTAL
SUPPLY. IRRIGATION AUTHORITIES INDICATE VALLEY SOILS ARE IN EXCELLENT
CONDITION.
This report prepared t
JACK N. WASMrCHEK. and RONALD E. M0R6LAND
SOIL CONSERVATION SERVICE. COLOKADO STATE UNIVERSITY
FORT COLLINS, COLORADO
■d by
[ M. □. BURDICK— STATE CONSERVATIONIST D
. S. DEPARTMENT OF AGRICULTURE
I DENVER. COLORADO
G1LLASPIE-— AREA CONSERVATIONIST |
SOIL CONSERVATION SERVICE
DENVER. COLORADO I
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.) Apr-Sept wATER SUPPLY OUTLOOK
Expressed as "Poor, Fair. Average, E>
eel lent" 'tSith Respect to Usual Supply
FORECAST POINT
FORE-
CAST
% of
Average
t
Average
STREAM or AREA
Flow Period
Spring
Season
Late
Season
Big Thompson at Drake
Bear Creek
Exc.
Exc .
(1)
112
112
100
Coal Creek
Exc.
Exc.
Boulder at Orodell
60
122
49
North Fork of South
Cache La Poudre at
Platte
Exc .
Exc .
Canon Mouth (2)
250
116
215
North Fork of Cache
Clear Creek at Golden
La Poudre
Exc.
Exc.
(3)
145
122
119
Ralston Creek
Exc.
Exc .
St. Vrain at Lyons (4)
78
111
70
Rock Creek
Exc.
Exc .
J flj Observed flou plus by— pass to pouer plants. (2) Observed flou minus trans— basin diversions plus municipal and irrigation diversions. (3) Observed flow minus
diversion through August r. Gumlick Tunnel. f4) Observed flow plus change in storage in Price Reservoir.
SUMMARY of SNOW MEASUREMENTS
(COMPARISON VSITH PREVIOUS YE
ARS)
RIVER BASIN
ana or
SUB- WATERSHED
Number of
Courses
Averaged
THIS YEAR'S SNO.'.
WATER AS PERCENT OF
Last Year
Average i"
Big Thompson
5
89
120
Boulder
3
75
101
Cache La Poudre
8
90
128
Clear Creek
6
79
110
Saint Vrain
3
74
104
South Platte
3
65
96
SOIL MOISTURE
RIVER BASIN
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
Last Year
Average "1"
Big Thompson
3
89
139
Boulder
1
102
121
Cache La Poudre
2
91
122
Clear Creek
2
92
130
Saint Vrain
2
95
122
South Platte
2
107
122
RESERVOIR STORAGE (1
housand Ac. Ft.)
END OF MONTH
RESERVOIR STORAGE (T
housand
^c. Ft.)
END OF MONTH
RESERVOIR
Usable
Capacity
Usable Storage
RESERVOIR
Usable
Capacity
UsabI e Storage
This
Year
Last
Year
Average ^
This
Year
Last
Year
Average
Antero
33.0
15.9
15.9
10.6
Horsetooth
143.5
116.5
108.4
106.8
Barr Lake
32.2
26.2
27.4
21.1
Lake Loveland
14.3
10.9
11.9
8.4
Black Hollow
8.0
4.4
4.0
3.3
Lone Tree
9.2
8.7
8.0
6.6
Boyd Lake
44.0
44.8
31.2
27.6
Mariano
5.4
5.4
5.1
4.2
Cache La Poudre
9.5
8.0
8.4
7.5
Marshall
10.3
7.0
7.5
3.0
Carter Lake
108.9
106.4
100. 7
81.7
Mars ton
18.0
16.3
16.4
14.7
Chambers Lake
8.8
4.5
3.2
3.0
Milton
24.4
15.9
13.5
10.8
Cheesman
79.0
73.5
79.1
49.0
S tandley
42.0
31.0
32.6
11.0
Cobb Lake
34.3
21.9
18.5
9.9
Terry Lake
8.2
6.4
.2
5.0
Eleven Mile
97.8
96.4
96.4
72.1
Union
12.7
12.7
12.7
7.6
Fossil Creek
11.6
9.5
10.0
7.0
Windsor
18.6
8. 7
•196^pir?od.
Gross
43.1
36.7
35.3
22.4
Halligan
6.4
3.3
3.8
4.7
Return if not delivered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOV, SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
OFFICIAL BUSINESS
FIRST CLASS MAIL
CO- lb
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
ARKANSAS RIVER WATERSHED IN COLORADO
as of
April 1, 1971
U.S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
lOK LA H ©IMA
YOUR WATER SUPPLY ' '
WATER USERS ON THE ARKANSAS DRAINAGE SHOULD HAVE NEAR NORMAL WATER
SUPPLIES THIS SUMMER. THE SNOW PACK IS NEAR NORMAL ON THE ARKANSAS DRAINAGE.
THE SOUTHERN TRIBUTARIES HAVE CONSIDERABLY LESS SNOW, BUT WILL SUPPLY SOME
WATER. CARRY-OVER STORAGE IS EXCELLENT. WITH THE EXCEPTION OF JOHN MARTIN,
MOST OF THE LARGER RESERVOIRS, CONTAIN CONSIDERABLY MORE WATER THAN NORM.\L.
VALLEY SOILS CONTAIN FAIR TO GOOD SOIL MOISTURE.
JACK N. WASHICHEK and RONALD E. MORELAND
SOIL CONSERVATION SERVICE. COLORADO STATE UNIVERSITY
FORT COLLINS. COLORADO
I M. D. BURDICK-
•STATE CONSERVATIONIST W.D. McCORKLE —AREA CONSERVATIONIST |
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
I DENVER. COLORADO LA JUNTA, COLORADO j
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.)Apr-Sept
WATER SUPPLY OUTLOOK ^Sn^^J^^^^ut^lV
FORECAST PC'S^
_„
1 1 3
+
Arkansas nr Pueblo (1)
Arkansas at Salida (1)
Cucharas nr LaVeta
Purgatoire at Trinidad
290
300
9
40
97
97
75
298
309
12
46
r'i -- r-
:. Tui- -z'ses and Turquoise Reservoirs mimus i:
r.r-r;-.; iiickes.
STREAM or AREA
Flow Period
Spring
Season
Late
Season
Apishapa
Exc .
A\ g .
Fountain Creek
£.XC.
Avg.
Grape
Exc.
Avg .
Hards arable Creek
Exc.
Avg.
Huerfano
Exc.
Avg.
Monument Creek
-hoe. Divide, Tv-i'. Lcikei
SUMMARY of SNOW MEASUREMENTS
Ss^3-'''-"=^S-El;
Arkans as
10
78
103
Cucharas and
Purgatoire
3
33
39
RESERVOIR STORAGE (Thousand Ac. Ft.) =sdof
Adobe
Clear Creek
Cucharas
Great Plains
Horse Creek
Usac.e
Capacirv
61.6
11.4
40.0
150.0
26.9
isai'e Sto'age
47.5
6.0
108.6
9.8
17.6
10.4
1.7
73.2
20.1
Average
11.1
7.3
3.3
38.3
4.9
SOIL MOISTURE
RIVER BASIN
NLTTOe'
of
Stations
TrilS YEAR'S "OlSTuRE
as PERCENT OF:
Las: Year
Average i"
Arkansas
3
107
99
Cucharas and
Purgatoire
1
106
100
RESERVOIR STORAGE ahousand Ac. Ft.) end OF MONTH
RESERVOIR
John Martin
Meredith
Model
Turquoise
Tvin Lakes
UsaUe
Capacity
353.9
41.9
15.0
130.0
57.9
Usabie Storage
34.6
25.6
1.3
52.4
41.5
50.8
24.7
1.1
42.7
36.8
Average
89.4
10.0
3.1
7.5
19.9
1953-1967 period.
Return if not delivered
; 2EOAR-~ENT OF AGRICULTURE
C: .;Ej -~ SERVICE
; = ^::1"-~E .mversity
- c:_: = -2C b:52i
POSTAGE AND FEES PAID
U.S. OEPAITMENT Of AG«ICULn«
FIRST CLASS MAIL
C0-2b
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
UPPER RIO GRANDE WATERSHED IN COLORADO
as of
April 1, 1971
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
YOUR WATER SUPPLY
WATER SUPPLY FORECASTS ARE MUCH BELOW NORMAL ON ALL THE RIO GRANDE BASIN.
CURRENT SNOW PACK RANGES FROM 46% ON CULEBRA, 51% ON CONEJOS TO 63% ON THE
RIO GRANDE AND 72% FOR THE ALAMOSA. MANY SNOW COURSES ARE NEAR THE MINIMUM ON
RECORD. RESERVOIR STORAGE IS 179% OF AVERAGE. A COMBINED TOTAL OF SIX
RESERVOIRS IS 83,500 ACRE FEET COMPARED TO AN AVERAGE OF 46,700 ACRE FEET.
SOIL MOISTURE IN THE MOUNTAIN AREAS IS ABOVE AVERAGE.
This report prepared by
FORT COLLINS. COLORADO
M. D. BURDICK —STATE CONSERVATIONIST DONALD B. TOOTELL— AREA CONSER
S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
DENVER. COLORADO DURANGO. COLORADO I
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.)Apr-Sept WATER SUPPLY OUTLOOK
Expressed as "Poor, Fair, Average, Ex-
cellent" With Respect to Usual Supply.
FORECAST POINT
FORE-
CAST
% of
+
Average
STREAM or AREA
Flow Period
Season
Late
Season
Alamosa abv Terrace
40
65
62
Saguache Creek
Pnrcr
JT oor
Conejos nr Mogote (1)
120
66
182
Sangre de Cristo Cr.
Poor
Poor
Culebra at San Luis (2)
15
79
19
Trinchera
Poor
r oor
Rio Gr. at 30 Mxle
Bridge (3)
90
77
117
Rio Gr. nr Del Norte
(3)
290
66
438
South Fork at South
Fork
75
68
110
(1) Observed flow plus change in storage in Platoro Reservoir. (2) Observed flow plus change in storage in Sanchez Reservoir. (3) Observed flow plus change
storage in Santa Maria, Rio Grande ana Continental Reservoirs,
SUMMARY of SNOW MEASUREMENTS
(COMPARISON WITH PREVIOUS YEARS)
SOIL MOISTURE
RIVER BASIN
and/ or
SUB-WATERSHED
Number of
Courses
Averaged
THIS YEAR'S SNOW
WATER AS PERCENT OF
Last Year
Average "f-
Alamosa
2
85
72
Conejos
3
68
51
Culeb ra
2
46
46
Rio Grande
10
76
63
RIVER BASIN
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
Last Year
Average +
Alamosa
2
143
147
Cone j OS
1
78
77
Culebra
2
116
96
Rio Grande
3
125
123
RESERVOIR STORAGE (1
iiousand Ac, Ft,) end of month
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
Continental
Platoro
Rio Grande
26.7
60.0
45.8
10.0
2.9
41.6
6.6
3.0
28.0
5.1
7.1
13.3
RESERVOIR STORAGE (T
Iiousand i
^C. Ft.) END OF MONTH
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average
Sanchez
Santa Maria
Terrace
103.2
45.0
17.7
18.0
11.0
0.0
18.7
6.7
9.9
11.1
6.0
4.0
1953-1967 period.
Return if not delivered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
OFFICIAL BUSINESS
POSTAGE AND FEES PAID
U.S. DEPARTMENT OF AGRICULTURE
FIRST CLASS MAIL
C0-3b
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
RIO GRANDE WATERSHED IN NEW MEXICO
as of
April 1, 1971
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
SUMIER. FORECASTS ARE BASED ON NORMAL PRECIPITATION FOR THE REMAINDER nc ThE
YEAR. MOST OF THE SNOW SEASON IS PAST AND THE CURRENT SNOW PACK IS ALMOST
NON EXISTENT. ONLY VERY HIGH ELEVATIONS PJ\VE ANY SNOW LEFT.
This report prepared by
JACK N. WASHICHEK and RONALD E. MORELAND
CONSERVATION SERVICE. COLORADO STATE UNIVERSITY
FORT COLLINS. COLORADO
KENNETH L. WILLIAMS— STATE CONSERVATIONIST RICHARD S. SWENSON —AREA CONSERVATIONIST |
S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
ALBUQUERQUE. NEW MEXICO
SANTA FE. NEW MEXICO
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.)Mar-Jul WATER SUPPLY OUTLOOK
Expressed as Poor. Fair, Average. E>
cellent" With Respect to Usual Supply
FORECAST POINT
FORE-
CAST
% of
Average
Average
o 1 KtArl or AKtA
Flow Period
Season
Season
L.0SLi±xa at L.OSL.
q
1 8
"pTTil^iirlr^ r^ya^Xr
ILnilJllU.U LiLccK.
Poor
Poor
Pbcos at Pecos
41
Poor
Poor
Kio L.n.aina. uo iLXvaao
Tin
±xU
SQ
1 88
xo o
noira rvxver
Poor
Poor
KIO LrL. at. UUOWl (^Z.^
z ou
X J
iNdlUDfci VjITfcifciJN.
Poor
Poor
Kio Gr. at ban rlar (,z;
1 An
LI
J J H
Rio 0 j o Caliante
Poor
Poor
Rio Hondo nr Valdez
7
47
15
Rio Pueblo de Taos
Poor
Poor
Red R. at mouth nr
Santa Fe Creek
Poor
Poor
Questa
20
63
32
The forecast of the Rio Grande at San Marcial is 2.2.% of the Averaee used by the Elephant Butte Irrigation District . (1) Observed flow plus change in Costilla
Reservoir. (2 J Observed flow plus change in storage in El Vado ana Ahiquiu Reservoir .
SOIL MOISTURE
plus change m storag
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
RIVER BASIN
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
Last Year
Average "t"
Last Year
Average +
Pecos
1
0
0
Pecos
2
126
90
Rio Chama
4
36
29
Rio Chama
1
90
Rio Grande, N.M.
13
22
20
Rio Grande
4
73
82
Rio Hondo
1
11
Red River
Red River
2
22
19
RESERVOIR STORAGE (1
housand Ac. Ft.]
END OF
MONTH
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
Alamorgordo
111
60
85
64
Cab alio
344
43
47
65
Conchas
273
153
223
161
Elephant Butte
2195
317
535
334
RESERVOIR STORAGE (Thousand i
iC. Ft.) END OF MONTH
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average
ElVado
McMillen-Avalon
195
32
1
15
1
35
6
22
1953-1967 period.
Return i f no t del i vered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
POSTAGE AND FEES PAID
U.S. DEPARTMENT OF AGRICULTLmE
XSATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
SAN MIGUEL, DOLORES, ANIMAS, SAN JUAN WATERSHEDS
IN COLORADO AND NEW MEXICO
as of
April 1, 1971
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO .
TO INCREASE THE SNOW PACK, HOWEVER, IT WOULD HAVE TO BE AN EXTREMELY HIGH
SNOW MONTH TO EVEN BRING THE SNOW PACK TO NORMAL. CURRENT SNOW PACK RANGES
FROM 58% OF NORMAL ON THE SAN JUAN TO 78% ON THE ANIMAS.
JACK N. WASHICHEK and RONALD E. MORELAND
SOIL CONSERVATION SERVICE. COLORADO STATE UNIVERSITY
FORT COLLINS. COLORADO
I-
KENNETH L. WILLIAMS ---STATE CONSERVATIONIST
ALBUQUERQUE, NEW MEXICO I
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
. DONALD B. TOOTELL —AREA CONSERVATIONIST RICHARD S. SWENSON —AREA CONSERVATIONIST i
DURANGO. COLORADO SANTA FE. NEW MEXICO
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.) Apr-Sept WATER SUPPLY OUTLOOK
Expressed as "Poor, Fair, Average, Ex-
cellent" With Respect to Usual Supply.
FORECAST POINT
^^imas at Durango
Dolores at Dolores
La Plata at Hesperus
Los Pinos at Bayfield
(1)
Piedra Cr. at Piedra
San Juan at Carracas
Inflow to Navajo Res.
(1) (Apr- Jul)
FORE-
CAST
320
155
16
tL25
90
250
370
% of
Average
78 +09
67
67
64
55
66
60 319
fl) Observed flow plus change in storage in Vallicito Reservoir.
SUMMARY of SNOW MEASUREMENTS
(COMPARISON WITH PREVIOUS YEARS)
+
Average
Pl
24
L94
L63
379
RIVER BASIN
and/or
SUB-WATERSHED
Animas
Dolores
San Juan
Number of
Courses
Averaged
THIS YEAR'S SNOW
WATER AS PERCENT OF
82
64
77
Average -f-
78
77
58
RESERVOIR STORAGE (Thousand Ac. Ft.) end of
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
Goundhog
22
14
13
7
Lemon
40
26
30
15
Navaj o
.696
834
859
Vallecito
126
81
79
50
STREAM or AREA
Florida
Mancos
San Miguel
Flow Period
Spring
Season
Avg,
Avg
Avg
Fair
Fair
Fair
SOIL MOISTURE
RIVFR BASIN
Animas
Dolores
San Juan
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
130
111
157
Average +
94
102
122
RESERVOIR STORAGE (T
lousand Ac. Ft.) end of month
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
+ 1953-1967 period.
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
OFFICIAL BUS I NESS
C0-5b
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
GUNNISON RIVER WATERSHED IN COLORADO
as of
April 1, 1971
U.S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
COLORADO
M E S A
SCALE IN MILES
Limited Shortage
75% -1 00%
Severe Shortage
75% or less
YOUR WATER SUPPLY
STREAMFLOW FORECASTS FOR THE GUNNISON RIVER AND ITS TRIBUTARIES ARE
SLIGHTLY BELOW THE 1953-67 AVERAGE, RANGING FROM 78% FOR THE UNCOMPAHGRE
AND 88% FOR THE GUNNISON TO 94% FOR SURFACE CREEK. THESE ARE ABOUT THE SAME
AS LAST MONTH. COMBINED USABLE STORAGE ON BLUE MESA, MORROW POINT AND TAYLOR
RESERVOIRS IS 516,000 ACRE FEET. TAYLOR PARK IS 92,000 ACRE FEET OR 159v
OF AVERAGE.
1 his report prepared by
JACK N. WASHICHE< and RONALD E. MORELAND
SOIL CONSERVATION SERVICE. COLORADO STATE UNIVEB
FORT COLLINS, COLORADO
I M. D. BURDICK— STATE CONSERVATIONIST R. L. PORTER —AREA CONSERVATIONIST |
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
I DENVER. COLORADO GRAND JUNCtlON. COLORADO 1
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.) Apr-Sept WATER SUPPLY OUTLOOK
Expressed as "Poor, Fair, Average, Ex-
cellent" With Respect to Usual Supply.
FORECAST POINT
Gunnison Inflow to
Blue Mesa
Gunnison nr Grand
Junction
Surface Cr. nr
Cedaridge
Uncompahgre at Colona
FORE-
CAST
650
1000
15
100
% of
Average
85
88
94
78
+
Average
767
1137
16
129
STREAM or AREA
North Fork of
Gunnison
Taylor
(1) Observed flow plus change in storage in Taylor, Blue Mesa and Morrow Point Reservoirs
SUMMARY of SNOW MEASUREMENTS
(COMPARISON WITH PREVIOUS YEARS)
SOIL MOISTURE
RIVER BASIN
and/or
SUB-WATERSHED
Number of
Courses
Averaged
THIS YEAR'S SNOW
WATER AS PERCENT OF
Last Year
Average "j-
Gunnison
12
86
96
Surface Creek
3
99
100
Uncompahgre
3
80
86
RESERVOIR STORAGE (
Blue Mesa
Morrow Point
Taylor
housand Ac. Ft.) END OF MONTH
Usable
Capacity
830
121
106
Usable Storage
309
115
92
413
114
90
Average
58
RIVER BASIN
Gunnison
Surface Creek
Uncompahgre
Flow Period
Spring
Season
Exc.
Exc.
Exc.
Avg,
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
74
130
130
Average +
90
139
139
RESERVOIR STORAGE (T
lousand Ac. Ft.) end of month
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average
+ 1953-1967 period.
Return i f no t del i vered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
OFFICIAL BUSINESS
ciDPT PI lee 111 II
rmai yLHaa ifiHik
C0-6b
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
COLORADO RIVER WATERSHED IN COLORADO
as of
April 1, 1971
U. S. DEPARTMENT OF AGRICULTURE • SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
YOUR WATER SUPPLY
THE COLORADO RIVER AND ITS TRIBUTARIES ABOVE GLENWOOD SPRINGS SHOULD
ALL PROVIDE ADEQUATE WATER SUPPLIES THIS SUMMER, THE SNOW PACK VARIES FROM
103% OF AVERAGE ON PLATEAU CREEK TO 137% ON THE WILLIAMS FORK. FORECASTS FALL
IN ABOUT THE SAME RANGE. SOILS IN THE IRRIGATED AREAS ARE REPORTED TO BE IN
GOOD CONDITION. CARRY-OVER STORAGE IN THE COLORADO BASIN RESERVOIRS IS
EXCELLENT. SOIL MOISTURE CONDITIONS IN THE MOUNTAINS ARE GOOD.
This report prepared by
JACK N. WASHICHEK and RONALD E. MOREL.AND
SOIL CONSERVATION SERVICE. COLORADO STATE UNIVERSITY
FORT COLLINS. COLORADO
DEPARTMENT OF AGRICULTURE
DENVER. COLORADO
SOIL CONSERVATION SERVICE
GLENWOOD SPRINGS. COLORADO
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.) ^pr-Sept ^^j^p gypp^y qutLOOK
Expressed as "Poor, Fair, Average, E>
cellent" With Respect to Usual Supply
FORECAST POINT
FORE-
CAST
% of
Average
+
Average
Dlue ab Cxreen Mt. \1)
2 7j
I T -
II /
O Q £
2 jc
Colo. Rv. inflow to
Granby Res. (2;
275
12c
219
Colo. Rv. nr Dotsero
IdUCJ
11c
1375
Roaring Fork at
Glenwood Springs (4)
730
10 f
692
Wm. Fk nr Par. (5)
85
142
60
Will. Cr. inflow to
Will. Cr. Res.
60
13C
46
Colo, nr Cameo (6)
2480
112
2216
STREAM or AREA
Flow Period
Spring
Season
Late
Season
Brush
Exc .
Exc .
Eagle River
Exc.
Exc.
Gypsum Creek
Exc .
Exc.
(1) Observed flow plus diversions through Roberts Tunnel and change in storage in Dillon Reservoir, (2) Observed flow corrected for chcinge in storage iri Lake Granby
as furnished by U.S.B.R. and diversions by Adams Tunnel and Grand River Ditch. (3) Observed flow plus the changes as indicated in (1), (2) and (5)£lus Moffat Ditch
and change in Homestake, Williams Fork, Green Mt. and Willow Creek Reservoirs. (4) Observed flow plus diversions through Divide and Twin Lakes Tunnels plus change
>torage in Ruedi Reservoir.^ J5J Observed JIoiljiJus diversions through August P. Gumlick Tunnel. (6) Observed flow plus the changes as indicated in (3) and (41
SUMMARY of SNOW MEASUREMENTS
(COMPARISON WITH PREVIOUS YEARS)
SOIL MOISTURE
RIVER BASIN
and/or
SUB-WATERSHED
Blue River
Colorado
Plateau
Roaring Fork
Williams Fork
Willow
Number of
Courses
Averaged
8
21
3
7
2
2
THIS YEAR'S SNOW
WATER AS PERCENT OF
88
99
106
103
106
88
Average -j-
122
131
103
121
137
116
RIVER BASIN
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
Last Year
Average "t"
Blue River
1
103
129
Colorado
5
116
137
Roaring Fork
1
101
129
Willow
1
109
148
RESERVOIR STORAGE (Thousand Ac. Ft.) END OF MONTH
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
Dillon
Granby
Green Mountain
Homestake
254
466
147
43
246
351
55
239
240
50
167
233
63
RESERVOIR STORAGE (T
liousand j
iC. Ft.) END OF MONTH
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average
Ruedi
Williams Fork
Willow Creek
Vega
101
97
9
32
61
45
8
18
69
42
8
15
27
6
11
1953-1967 period.
Return i f no t del i vered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
OFFICIAL BUS! NESS
FIRST CLASS MAIL
POSTAGE AND FEES PAID
U.S. DEPARTMENT OF AGRICULTURE
CO-7b
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
YAMPA, WHITE, AND NORTH PLATTE RIVER WATERSHEDS
IN COLORADO
Apr:?? f/ 19 71
U.S. DEPARTMENT OF AGRICULTURE ■ SOIL CONSERVATION SERVICE
COLORADO EX PERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
Limited Shortage
75% -1 00%
Severe Shortage
75% or less
WATER SUPPLIES SHOULD Fi^R^Sx(^M%SM^f^fe^NORTHWE STERN COLORADO. ALL
STREAMS IN THIS AREA WILL FLOW MUCH ABOVE NORMAL. THE DEEPEST SNOW EVER
MEASURED ON A REGULAR SNOW COURSE WAS RECORDED THIS YEAR. IT WAS 176 INCHES
ON ROUND MOUNTAIN SNOW COURSE. MOUNTAIN SOILS ARE CONSIDERABLY WETTER THAN
NORMAL. VALLEY SOILS ARE IN GOOD CONDITION. FORECASTS ARE BASED ON NORMAL
PRECIPITATION FOR THE REMAINDER OF THE YEAR.
JACK N. WASHICHEK and RONALD E. MORELAND
SOIL CONSERVATION SERVICE. COLORADO STATE UNIVERSITY
FORT COLLINS. COLORADO
I M. D. BURDICK-STATE CONSERVATIONI!>T R. L. PORTER -ARE A CONSERVATION I ST (
U. S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
I DENVER, COLORADO GLENWOOD SPRINGS, COLORADO
The Conservation of Water begins with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. Ft.) Apr-Sept
FORECAST POINT
FORE-
% of
+
Average
CAST
Average
Elk at Clark
235
133
191
Laramie at Jelm
X JO
Little Snake at Lily
425
153
277
No. Platte at
Nor thgate
375
174
225
White nr Meeker
355
121
293
Yampa nr Maybe 11
1130
132
853
Yampa at Steamboat
Springs
340
131
260
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 -f-
Elk
3
104
119
Laramie
3
99
131
North Platte
5
108
136
White
2
110
122
Yampa
6
107
130
Return if not delivered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
WATER SUPPLY OUTLOOK
Flow P
eriod
STREAM or AREA
Spring
Late
Season
Canadian River
Exc.
Exc .
Hunt Creek
Exc.
Exc •
Illinois River
Exc.
Exc .
Michigan River
Exc.
Exc.
Oak Creek
Exc.
Exc.
Trout Creek
Exc.
Exc.
SOIL MOISTURE
RIVER BASIN
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
Last Year
Average +
Laramie
2
91
122
North Platte
2
135
131
Yampa
1
100
166
+ 1953-1967 period.
POSTAGE AND FEES PAID
U.S. DEPARTMENT OF AGRICULTURE
C0-8b
WATER SUPPLY OUTLOOK
FOR THE SOIL CONSERVATION DISTRICTS IN THE
LOWER SOUTH PLATTE RIVER WATERSHED IN COLORADO
as of
April 1, 1971
U.S. DEPARTMENT OF AGRICULTURE - SOIL CONSERVATION SERVICE
COLORADO EXPERIMENT STATION, STATE ENGINEERS OF COLORADO AND NEW MEXICO
YOUR WATER SUPPLY
WATER SUPPLIES SHOULD BE EXCELLENT ON THE LOWER SOUTH PLATTE THIS SUMMER.
THE SNOW PACK IN THE UPPER SOUTH PLATTE AND ALL ITS TRIBUTARIES IS MUCH ABOVE
NORMAL. STREAMFLOWS ARE ALL FORECASTED TO FLOW ABOVE NORMAL. CARRY-OVER
STORAGE IS NEARLY UP TO CAPACITY AND 123% OF AVERAGE. SOILS IN THE IRRIGATED
AREAS ARE REPORTED TO BE IN GOOD CONDITION. FORECASTS ARE BASED ON NORMAL
PRECIPITATION FOR THE REMAINDER OF THE YEAR.
JACK N. WASHICHEK and RONALD E. MORELAND
. CONSERVATION SERVICE. COLORADO STATE UNIVERSITY
FORT COLLINS. COLORADO
M. D. BURDICK —STATE CONSERVATIONIST
S. DEPARTMENT OF AGRICULTURE
DENVER. COLORADO
D. W. GILLASPIE—AREA CONSERVATIONIST
SOIL CONSERVATION SERVICE
DENVER. COLORADO I
The Conservation of Water begins^with the Snow Survey
STREAMFLOW FORECASTS (1000 Ac. FtJ^P^-Sept WATER SUPPLY OUTLOOK
txpressea as roor, i-air, Average, tx-
cellent" With Respect to Usual Supply.
FORECAST POINT
FORE-
CAST
% of
Average
STREAM or AREA
Flow Period
Spring
Season
Late
Season
Rt a ThnmnQnn DTfllce
South Platte from
112
112
100
Greeley to Fort
RmilrlpT p t" Oforipll
UULLXU-C^i. d L. w X. C ^
60
122
49
Morgan
Exc.
Exc.
South Platte from
r^annn ^fon■t"T^
250
116
215
Fort Morgan to
Clear Cr. at Golden (2)
145
122
119
Sterling
Exc.
Exc.
Saint Vrain at Lyons
South Platte below
(3)
78
111
70
Sterling
Exc.
Exc.
(1 ) Observed fl.ou plus by-pass to pouer plants. (2) Observed flou minus trans-basin divers ions^plus municipal and irrigation diversions. (3) Observed flotu minus
diversion through August F. Gumlick Tunnel. f4 J Observed flou plus change
SUMMARY of SNOW MEASUREMENTS
(COMPARISON y^\TH PREVIOUS YEARS)
in storage in Price Reservoir.
SOIL MOISTURE
RIVER BASIN
and/'or
SUB- WATERSHED
Number of
Courses
Averaged
THIS YEAR'S SNOW
WATER AS PERCENT OF
RIVER BASIN
Number
of
Stations
THIS YEAR'S MOISTURE
as PERCENT OF:
Last Year
Average -|-
Last Year
Average
Big Thompson
5
89
120
Big Thompson
3
89
139
Boulder
3
75
101
Boulder
1
102
121
Cache La Poudre
8
90
128
Cache La Poudre
2
91
122
Clear Creek
6
79
110
Clear Creek
2
92
130
Saint Vrain
3
74
104
Saint Vrain
2
95
122
South Platte
3
65
96
South Platte
2
107
122
RESERVOIR STORAGE (1
housand Ac. Ft.) end of month
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
Carter
Cheesman
Eleven Mile
Empire
Horsetooth
108.9
79.0
97.8
37.7
143.5
106.4
73.5
96.4
32.8
116.5
100.7
79.1
96.4
34.8
108.4
81.7
49.0
72.1
29.6
106.8
RESERVOIR STORAGE (T
housand
^C. Ft.) END OF MONTH
RESERVOIR
Usable
Capacity
Usable Storage
This
Year
Last
Year
Average ^
Jackson
Julesburg
Prewitt
Point of Rocks
Riverside
35.4
28.2
32.8
70.0
57.5
33.2
19.8
27.7
69.2
61.9
32.7
23.2
28.6
70.6
60.5
34.0
21.5
16.8
58.4
49.6
1953-1967 period.
Return if not delivered
UNITED STATES DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
SNOW SURVEY
COLORADO STATE UNIVERSITY
FORT COLLINS, COLORADO 80521
OFFICIAL BUSINESS
POSTAGE AND FEES PAID
U.S. DEPARTMENT OF AGRICULTURE
FIRST CLASS MAIL
CO-9b
APPENDIX I
SNOW COURSE MEASUREMENTS as of April i, 1971
/ —
RRENT INFO
ECORO ^
SNOW COURSE
DATE
OF
O^EPTH
WATER
*ATER C
(INC
ONTENT
HESI
(INCHES!
(INChESi
LAST
TEAR
AvG
53 67
NORTH PLATTE BASIN
Laramie River
Deadman Hill
Mclntyre
Roach
3/31
3/26
3/27
63
49
74
20. 7
13.4
24.8
22.5
15.3
21.5
16.3
10.5
18.2
North Platte River
Cameron Pass
Columbine Lodge
Norghgate
Park View
Wiliow Cr. rass(,B;
3/31
3/30
3/31
3/29
/9Q
88
80
26
40
4 7
38.6
31.2
7.9
11. 8
15.4
33.1
27.8
8.5
11.8
15.9
26.5
23.5
6.2
8.6
12 . 5
SOUTH PLATTE BASIN
Boulder Creek
Baltimore
Boulder Falls
University Camp
3/30
3/29
3/29
21
43
56
7.1
14.2
19.1
12.2
18.4
22.7
5.9
13.3
20.7
Big Thompson River
Deer Ridge
Hidden Valley
Lake Irene (B)
Long's Peak
Two Mile
3/26
3/29
3/27
3/27
3/26
16
39
79
43
63
4.7
10.6
27.3
13.2
18.7
9.4
13.4
27.4
14.3
19.6
5.0
11.0
20.7
10.7
14.5
Cache La Poudre
Bennett Creek
BigSouth
Cameron Pass
Chambers Lake
Deadman Hill
Hour Glass Lake
Joe Wright
Lost Lake
Pine Creek
Red Feather
3/31
3/28
3/31
J/
3/31
3/31
3/31
3/28
3/30
3/30
32
2
88
33
63
27
78
46
2
31
8.9
0.5
38. 6
12.1
20.7
7.7
29.3
16.0
0.7
7.9
12.3
2.7
33.1
14.4
22.5
11.6
30.1
16.9
3.7
10.9
2.4
26.5
9. 1
16.3
6.8
11.5
1.9
7.2
Clear Creek
Baltimore (B)
Berthoud Falls
Empire
Grizzly Peak (B)
Loveland Lift
Love land Pass
3/30
3/30
3/30
3/30
3/31
3/31
21
54
26
70
53
54
7.1
16.3
8.5
23.9
16.5
19.0
12.2
20.4
11.9
25.7
24.5
20.7
5.9
12.9
7.5
17.9
23.4
15.4
Saint Vrain River
Cop eland Lake
Ward
Wild Basin
4/1
3/29
4/1
11
24
41
5.5
6.6
11.7
7.5
9.6
15.0
4.4
6.7
11.8
South Platte River
Como
Geneva Park
Horseshoe Mt.
Hoosier Pass
Jefferson Creek
Mosquito
Trout Creek Pass
3/30
3/29
3/26
3/29
3/30
3/29
3/26
20
10
42
45
31
31
7
6.5
2.7
11.5
11.6
10.3
8.7
2.2
11.0
7.8
12.5
18.0
12.3
13.8
6.1
3.5
12.9
9.2
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
3/29
3/31
3/30
3/29
3/30
3/29
3/29
3/29
3/29
3/29
26
49
35
14
59
36
15
47
37
39
7.3
12.2
10.3
4.7
19.4
12.4
5.4
16.3
10.0
10.3
10.5
14.6
13.3
8.7
19.9
14.4
20.1
13.9
11.0
5.8
10.6
9.6
4.4
16.1
13.2
17.3
10.1
10.7
Westcliffe 3/29 10 3.3 9.8 5.4
/ 7:
RENT INFO
ECORD
SNOW COURSE
DATE
OF
SuRvEv
NC"ESl
WATER
.INCHES
AATER C
INC
•1ES1 ~
S3 67
Cucharas River
Blue Lakes
3/30
0
n n
u . u
4.2
2 . 9
Cucharas Pass
3/30
9
3 . 9
9 . 0
LaVeta Pass (B)
3/30
7
2.4
7 . 2
7. 3
Purgatorie River
Bourbon
3/30
12
3 . 4
9 . 0
7.1
RIO GRANDE BASIN-Colo,
Alamosa River
Silver Lakes
3/31
0
0.0
3.8
5.5
Summitville
3/26
55
17.0
16.3
18.1
Coneios River
Cumbres
3/30
28
10 . 3
13 . 4
18.6
Platoro
3/31
30
8.5
13. 6
16.6
River Springs
3/29
6
1.6
3.1
4.8
Culebra River
Brown Cabin
/, / 1
u
0 . 0
Cottonwood (B)
Ll^
4/1
18
4 . 8
Culebra
3/30
14
t . 0
8.4
LaVeta Pass (B)
3/30
7
2 . 4
7.3
Trinchera (B)
Rio Grande
Cochetopa Pass
3/25
26
6.0
9.6
5.1
Grayback
3/29
30
11.4
14.0
Hiway
3/30
51
17.9
20.0
26.0
Lake Humphrey
3/26
10
3.2
5.1
5.5
Love Lake
3/30
11
3.3
8.5
- -
Pass Creek
3/30
11
3.9
5.7
11 . 1
Pool Table
3/30
7
1.7
4.9
5.9
Porcup ine
3/ 29
26
6.4
9.7
LO.l
Santa Maria
3/ 29
2
0.5
1.8
3.7
Upper Rio Grande
3/ 29
12
4 . 2
4.3
6 . 8
Wolf Creek Pass
3/30
40
15 . 7
20.5
27.0
Wolf Cr. Sum. (B)
3/30
59
91 A
Zl . 0
24. 7
28. 3
RIO GRANDE BASIN-N.M.
Pecos River
Panchuela
3/27
0
0.0
0.0
1.3
Rio Chama
Bateman
•3/97
9 R
6 . 4
10 . 5
LI. 4
Capulin Peak
T / 9 Q
Q
0 . 0
3 . 8
4.0
Chama Divide
j/ JU
u
0 . 0
0.0
1.4
Chamita
J / JU
J
0 . 7
5 . 4
7.5
Rio Grande
Aspen Grove
3/29
2
0.5
3.2
3.7
Big Tesuque
3/29
0
0.0
1.3
4.2
Blue Bird Mesa
3/28
0
0.0
4.8
3.6
Cordova
3/26
21
5.1
8.8
LO.O
Elk Cabin
3/30
0
0.0
0.8
2.1
Fenton Hill
3/30
0
0.0
3.7
2.7
Pajarito Peak
3/30
0
0 . 0
0.0
0 . 3
Payrole
3/30
4
1.2
8.4
6.2
Quemazon
3/29
8
2.8
8.6
8.2
Rio En Medio
3/29
6
2.8
6.6
7.7
Sandoval
3/29
0
0.0
3.9
4.5
Taos Canyon
3/29
0
0.0
2.9
3.5
Tres Ritos
3/25
0
0.0
4.0
4.2
Rio Hondo
Twinning
3/30
3
1.0
8.9
Red River
Hematite Park (B)
3/29
0
0.0
3.0
3.5
Red River
3/29
5
1.7
4.8
5.5
NOTE: NS - No Survey
(B) - On Adjacent Drainage
APPENDIX I
SNOW COURSE MEASUREMENTS as of April i, 1971
f
RREV- -.^C
ECOR. S
AATER
AATER CONTEs-
OF
DEPTH
CONTENT
Survey
(INCHES!
IINCHESi
LAST
VEAR
53 67
bti."'. J Lrt.s — iJULUKJib iSAi)l->
Animas River
Cascade
3/29
13
4. 2
7 . 3
10 . 8
Lemon
3/30
3
1 . 0
4 . u
Mineral Creek
J/
38
12 . 5
15 . 8
13 . 3
Mo las Lake
3/29
30
9 . 7
11. 7
12 . 6
Purgatory
3/29
37
12 . 0
18.5
Red Mt. Pass (B)
J/
76
29.1
31.5
30.1
Silverton Sub-Sta.
3/29
6
2.4
5.3
5.1
Spud Mountain
3/29
47
16.4
18.6
23.1
Dolores River
Lizzard Head
3/ 30
40
13 . 2
Id . 4
10 . U
Lone Cone
3/29
38
13 . 4
16. 7
Rico
3/30
0
0 . 0
7.5
5.4
Telluride
3/30
15
5.6
10.2
5.7
Trout Lake
3/30
35
12.4
13 . 2
San Juan River
Chama Divide (B)
3/30
0
0.0
0.0
1.4
Chamita (B)
3/30
3
0.7
5.4
7.5
Upper San Juan
3/30
43
17.5
21.1
30. 8
Wolf Cr. Pass (B)
3/30
40
15.7
20.5
27.0
Wolf Cr. Summit
3/30
59
21.6
24.7
28.3
Gu^^<ibOi^ BAbliS
Gunnison River
Alexander Lake
3/31
58
21.3
23.6
21.4
Blue Mesa
3/30
17
5.1
10.6
7.9
Butte
3/29
48
14.7
17.5
Cochetopa Pass (B)
3/25
26
6.0
9.6
5.1
Crested Butte
3/31
35
9.7
13. 1
13 . 3
Keystone
3/31
58
20.4
21. 5
19 . 7
Lake City
j/ ^ 0
2 8
9.4
7 . 7
Mesa Lakes (B)
3/29
52
17 . 5
18.0
17.5
McClure Pass
3/ 29
42
1 c;
Ij . J
17.3
14.6
Park Cone
3/30
34
9.1
13.3
10.9
Park Reservoir
3/29
63
23.6
21.5
23.6
Porphyry Creek
3/29
51
16.6
18.8
16.9
Toraichi
3/29
40
12.9
14.5
12.2
Suife.ce Creek
Alexander Lake
3/31
58
21.3
Z J . D
ZX . t
Mesa Lakes (B)
3/29
52
17 .5
18. 0
17 . 5
Park Reservoir
J/
63
23 . 6
21. 5
23 . 6
Uncompahgre River
Ironton Park
3/30
36
11.7
16.6
17.9
Red Mountain Pass
3/29
76
29.1
31.5
30.1
Telluride (B)
3/30
15
5.6
10.2
5.7
COLORADO BASIN
Blue River
Blue River
3/29
33
8.6
12.5
8.5
Fremont Pass
3/30
59
19.4
19.9
16.1
Frisco
3/30
27
8.8
10.6
7.5
Grizzly Peak
3/30
70
23.9
25.7
17.9
Hoosier Pass (B)
3/29
45
11.6
18.0
12.9
Shrine Pass
3/30
67
23.6
23.7
17.4
Snake River
3/30
36
10.9
12.4
7.6
Summit Ranch
3/30
30
9.3
9.6
7.1
isO* COURSE
Colorado River
Arrow
Berthoud Pass
Berthoud Summit
Cooper Hill
Fiddler Gulch
Glenmar Ranch
Gore Pass
Grand Lake
Lake Irene
Lapland
Lulu
Lynx Pass
McKenzie Gulch
Middle Fork
Milner
North Inlet
Pando
Phantom Valley
Ranch Creek
Tennessee Pass (B)
Vail Pass
Vasquez
Roaring Fork River
Aspen
Chapman
Independence Pass
Ivanhoe
Kiln
Last Chance
Lift
McClure Pass
Nast
North Lost Trail
Williams Fork River
Glenmar Ranch
Jones Pass
^addle Fork
Willow Creek
Granby
Willow Cr. Pass
Plateau Creek
Mesa Lakes
Park Reservoir
Trickle Divide
YAMPA BASIN
Elk River
Clark
Elk River
Hahn's Peak
WTiite River
Burro Mountain
Rio Blanco
Yampa River
Bear River
Columbine (B)
Dry Lake
Lynx Pass (B)
Rabbit Ears
Yampa View
3/30
3/29
3/30
3/31
3/29
3/30
3/29
3/28
3/27
3/25
3/30
3/29
3/29
3/30
3/27
3/28
3/30
3/27
3/30
3/29
3/30
3/26
3/29
3/29
3/29
3/30
3/30
3/30
3/29
3/29
3/30
3/29
3/30
3/29
3/30
3/29
3/29
3/29
3/29
3/29
3/31
3/31
3/31
3/30
3/29
3/26
3/30
3/30
3/29
3/30
3/30
18.7
21.6
21.4
12.2
15.0
10.3
12.5
9.3
27.3
15.9
25.9
16.2
5.7
13.0
17.4
10
11
13
14
10
22
18
24.9
18.1
20.2
10.3
22.3
13.0
9.0
22.7
15.7
22.6
17.5
13.4
31.2
22.4
16.2
35.7
19.8
NS - No Survey
(B) - On Adjacent Drainage
APPENDIX II
SOIL MOISTURE MEASUREMENTS as of Apni i, 1971
STATION
DATE
CF
SURVEY
CAPACITY
(INCHES)
THIS
YEAR
LAST
YEAR
AVG.
ALL
DATA
NORTH PLATTE BASIN
North Platte River
Muddy Pass
3/31/71
11. 1
7 . 3
4.8
6.4
Willow Pass
3/29/71
9.5
9 . 3
8.5
6.3
SOUTH PLATTE BASIN
Boulder Creek
Alpine Camp
3/29/71
6.9
4.1
3.4
Big Thompson River
3/27/71
Beaver Dam
7.1
4.1
3.3
Guard Station
3/27/71
6.9
3.2
3.6
Two Mile
3/27/71
4.9
4.7
2.6
Clear Creek
Clear Creek
3/31/71
9.5
6 . 6
7 . 2
5.0
Hoop Creek
3/ 29/71
4.9
3 . 3
2.6
Cache La Poudre River
Feather
3/31/71
10.1
5.3
7.3
4.0
lj3.ir3.iniL6 R.od.d.
3/28/71
12.4
7.9
7.2
6.8
South Platte River
3/29/71
7.8
4.3
4.9
4.3
Kenosha Pass
3/30/71
4.4
2.9
2.3
2.0
ARKANSAS BASIN
Arkansas River
Garfield
3/29/71
6.7
4.6
4.1
3.5
Leadvi lie
3/30/71
7.8
3.2
3.1
3.7
Twin Lakes Tunnel
3/30/71
4.5
1.8
1.8
2.5
RIO GRANDE BASIN - COLORADO
Coneios River
Mogote
3/25/71
10. 7
4.6
5.9
6.0
Rio Grande
Alberta Park
3/29/71
8.2
6.8
5.1
4.7
Bristol View
3/31/71
6.1
5.1
3.2
3.4
LaVeta Pass
3/25/71
11.9
8.7
8.2
8.7
RIO GRANDE BASIN - NEW MEXICO
Rio Chama
Bateman
3/27/71
6.7
1.9
2.5
3.2
Chamita
3/30/71
8.0
4.7
4.1
Rio Grande
Aqua Piedra
3/29/71
7.2
3.9
5.6
3.7
Big Tesuque
3/29/71
3.7
0.9
1.9
1.9
Fenton Hill
NS
6.5
5.1
Rio En Medio
3/29/71
3.5
0.4
1.4
1.2
Taos Canyon
3/29/71
3.3
2.3
2.4
2.3
Red River
Red Summit
3/29/71
4.9
1.5
0.6
1.9
ANIMAS-SAN JUAN BASINS
Animas River
Cascade
3/29/71
9.1
6.4
3.9
6.9
Mineral Creek
3/29/71
5.7
4.1
2.6
3.5
Mo las Lake
3/29/71
9.4
3.4
4.2
4.4
Dolores River
Dolores
3/30/71
19.6
8.4
7.8
8.0
Lizzard Head
3/30/71
11.8
5.0
3.4
7.1
Rico
3/30/71
13.8
10.5
10.4
8.3
/
APPENDIX 11
SOIL MOISTURE MEASUREMENTS as of April i, 1971
STATION
DATE
OF
SURVEY
CAPACITY
(INCHES)
THIS
YEAR
LAST
YEAR
AVG.
ALL
DATA
GUNNISON BASIN
Gunnison River
King
COLORADO BASIN (MAINSTEM)
Blue River
Blue River
Colorado River
Berthoud Pass
Gore
Grand Mesa
Ranch Creek
Vail
Roaring Fork River
Placita
YAMPA BASIN
Yampa River
Hahn's Peak
3/29/71
3/29/71
3/29/71
3/29/71
3/29/71
3/30/71
3/30/71
3/31/71
3/31/71
3.3
4.2
3.9
4.9
12.5
8.7
12.3
9.3
1.7
3.1
3.5
12.5
5.9
10.5
19.0
2.3
3.0
3.2
3.3
9.6
6.1
8.4
5.9
2.5
2.6
9.0
5.3
6.5
6.5
11.4
LIST of COOPERATORS
The following organlzotlons 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 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 Servi ce
Department of Commerce
Wea ther Bu rea u
War Depa rtment
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 Canal Company
Trinchera Irrigation Co.
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