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Full text of "Federal-state cooperative snow surveys and irrigation water forecasts for Missouri and Arkansas drainage basins"

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Historic, Archive Document 



Do not assume content reflects current 
scientific l<nowledge, policies, or practices. 



SiiVVVi OUTLOOK 
FOR 

COLORADO AND NEW MEXICO 



FIRST CLASS MAIL 



FEDERAL -STATE -PRIVATE COOPERATIVE SNOW SURVEYS 

HAS OFIIIIIIIIIIIIIIII{| 
April 1, 1981 
lllllllllllllllllllllllllllllllllllllllllllllllllllllil 




U.S. DEPARTMENT of AGRICULTURE * SOIL CONSERVATION SERVICE 

Collaborating with 
COLORADO STATE SOIL CONSERVATION BOARD 
STATE ENGINEER of COLORADO 
and STATE ENGINEER of NEW MEXICO 



Taaued by 
NORMAN A. SER6 
CHIEF 

SOIL CONSERVATION SERVICE 
WASHINGTON, D.C. 



BERNARD A. SHAFER, 
GARRY L.SCHAEFER, 
JOHN L. SPRAGUE, 



Released by 



SHELDON G, BOONE 
STATE CONSERVATIONIST 
SOIL CONSERVATION SERVICE 
DENVER, COLORADO 



RAY T MARGO, JR. 

STATE CONSERVATIONIST 
SOIL CONSERVATION SERVICE 
ALBUQUERQUE, NEW MEXICO 



Report prepared by 

Snow Survey Supervisor 
Assistant Snow Survey Supervisor P.O.BOX 17107 

Hydrologic Technician Denver; COLORADO 80217 



Irrigation System Design 
I wary simple concept: "Put 1 



I when the crop t 



here are two malO requirements to properly carry out this concept. First, we must have an 
it Ion system that is desi gned to do I i ver water supp I i es In the right quanti ties, at the right 
in the right location In the field. Second, the irrigator must have a sound l^nowledge of 
management pri no I p 1 es, 

\ good irrigation system design taltos the following factors into account: 



Heavy, flat sol !■ 



The water holding capacity of the 

■ivQ use - This is the 



Intake throughout the 



length of the Irrigation 
crop rooting depth. 



The crops peak consumptive use - ' 
during a period betveen normal in 
consumptive use usually occurs dui 
water at a maKimum rate during Ju 
daylight hours are long. There ai 
during Hay, Peak consumptive use 



dally rate of use of a crop occurring 
itions when such rate of use Is at a maximum. Peak 
I the plants fastest Rowing stage. Most plants use 
'hen the temperature peaks are the highest and the 
:one exceptions such as winter wheat which may peak 
expressed In inches of water needed per day. 



-ith 



The soils Informatl. 

rooting depth of 3 feet 
I work hard to get al I o 
gn an Irrigation system 



nd peak i 



ised to ; 



For 



■ of . 



For < 



rrigatlon systar 
er holding capacity of 2 inches per foot of depth and a crop 
I available for plant use 3 x 2 = 6 Inches of water. Plants 
■ater out of the root zone, it Is therefore comman practice 
gate when half of this available water Is used. This 
elds. In our example we would then replace the water used 
lie 6 inches is gone. Therefore, 3 inch net Irrigations are 
s range from about 0.10 inch to about 0.37 inch per day In 
I 0.25 1 nch per day. 



Design an Irrigation system as follows: Three inche 
Inch use per day equals 12 days water supply. Therefore, ai 
on 3 Inches of water every 12 days Is needed. If 48 acres \ 
be able to Irrigate 4 acres each day during the crop's peak 

Early or late In the irrigatloi 
shorter, and the plant Is smal ler oi 
then be spaced further apart. 



irrigatio 
ire to Ije 
onsumpt iv 



e water divided by 0.25 
I system capable of puttlt 
rrl gated we would need tc 



rlgation can 
I design your 



iwATER SUPPLY CONDITIONS 
as of 

April 1 



MARCH WAS the; HEAVIEST PRECIPITATION MONTH OF THE WINTER. THE MOUNTAIN 
SNOWPACK IN BOTH COLORADO AND NEW MEXICO IMPROVED SIGNIFICANTLY AS A RESULT OF 
FREQUENT STORMS THROUGHOUT THE MONTH. THE IMPROVEMENT IN SNOWPACK CONDITIONS 
MAS NOT ENOUGH TO OFFSET THE LACK OF SNOW RECEIVED DURING THE PREVIOUS FIVE 
NOBTHS HOWEVER. STREAHFLOW VOLUMES ARE EXPECTED TO GENERALLY RANGE BETWEEN 
ONE-HALF TO TWO-THIRDS OF NORMAL ON NEARLY ALL STREAMS IF NORMAL PRECIPITATION 
IS RECEIVED THE REMAINDER OF THE YEAR. ALL STREAMS ARE PREDICTED TO PRODUCE 
GREATER FLOWS THAN IN THE DROUGHT YEAR OF 1977. ALL FORECASTS ARE A JOINT 
-Sg flRT OF TUB mil , rOMSFUVATTOM SF . R V TCF AND THE NtTinNAI. wf.ather servtce 



r^COLORADO - THE STATEWIDE SNOWPACK HAS IMPROVED FROM WX OF NORMAL 
^TAST month TO 60% CURRENTLY AS A RESULT OF ABNORMALLY HEAVY PRECIPITA- 
TION DURING MARCH WHICH AVERAGED 1 1-2 TIMES NORMAL. ALL STREAMFLOW FORECASTS 
IN THE STATE HAVE BEEN RAISED FROM LAST MONTH AS A RESULT. HOWEVER, THEY ARE 
STILL WELL BELOW NORMAL AND RANGE FROM 30% TO 70% OF AVERAGE. WITH 95% OF THE 
USUAL SNOW ACCUMULATION SEASON COMPLETED, MODERATE TO SEVERE WATER SHORTAGES 
ARE NOW ANTICIPATED. RESERVOIR STORAGE REMAINS 12% ABOVE NORMAL STATEWIDE. 
/-"NNEW MEXICO ~ MARCH WAS THE HEAVIEST PRECIPITATION PERIOD FOR THE 
Xjr' WINTER WITH SOME STATIONS RECORDING AS MUCH AS TWICE NORMAL. SNOWPACK 
INCREASED DRAMATICALLY FROM 27% OF NORMAL LAST MONTH TO 70X OF KOBHAL AS OF 
APRIL 1. STREAMFLOW FORECASTS HAVE ALL BEEN RAISED TO REFLECT THE PAST WET 
MONTH AND NOW RANGE FROM 25% OF NORMAL UP TO 75% OF NORMAL. RESERVOIR LEVELS 
ARE IN EXCELLENT SHAPE WITH CURRENT STORAGE AT 228Z OF AVERAGE AND lUZ OF A 
YEAR AGO. THE MOST DEFICIENT STREAMFLOWS WILL BE ON THE MAINSTEM OF THE RIO 
GRANDE WITH ONLY 25% OF NORMAL FORECAST AS INFLOW TO ELEPHANT BUTTE RESERVOIR 




Watorslied 
STREAMFLOW FORECASTS 

QJ]] I10-13CK 
pIT] 90-110% 
70- M% 
Under 70% 



"The Conscriiilion of If (ilrr l„'i>ins iiilli ihf .Sm.ir Siiri 



Water Supply Outlook for Colorado and New Mexico — Page 2 

GUNNISON RIVER y^/j^jERSHED IN COLORADO 



COLORADO 



SUMMARy of SNOW MEASUREMENTS 




LEGEND 

J Snow Co^n* 
• SNOtEL Sit, 
STUeAMFLOW FQRfriST! 

p«c.^„„.o«E«sn 

Over 130% 

U I IJ no-i3iw 
EUl »o-iio% 

1. J 70- 9mt 
Under 70% 



YOUR WATER SUPPLY 

PRECIPITATION FOR MARCH WAS 127J OF AVERAGE, WHICH BROUGHT THE SEASON TOTAL TO 
72%. THE SNOWPACK HAS INCREASED FROM 472 ON THE GUNNISON RIVER WATERSHED TO 
61% OF AVERAGE WHILE THE HNCOHPAHGRE RIVER WATERSHED INCREASED FROM 4 7% TO 652 
OF AVERAGE. STREAMFLOW FORECASTS HAVE INCREASED SLIGHTLY OVER LAST MONTH WITH 
SURFACE CREEK CHANGING FROM 59% TO 72% OF AVERAGE. RESERVOIR STORAGE IS ABOVE 
AVERAGE EXCEPT TAYLOR RESERVOIR WHICH IS AT 79 PERCENT OF AVERAGE. BLUE MESA 
RESERVOIR IS 126 PERCENT OF AVERAGE AND MORROW POINT IS 111 PERCENT. SOIL 
MOISTURE IS RATED AS PAIR TO POOR IN THE IRRIGATED AREAS. 



STREAMFLOW FORECASTS (1B00 Ac Fl.) Ap,ii 



FORECAST POINT 



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



430 
530 
175 



754.0 
1158.0 
2«.0 
15.2 
129.0 



WATER SUPPU OUTLOOK 











Ohio Creek 


Fair 


Poor 


Slate River 


Fair 


Poor 


Taylor River 


Fair 


Poor 


Tomlchi Creek 


Fair 


Poor 



RESERVOIR STORAGE (Ihousanil Ac. Fl,) s»t 











Blue Mesa 


830 


412 


360 


328 


Morrow Point 


121 


115 


115 


104 


Taylor 


106 


50 


65 


63 












Gunnison 


13 


39 


61 


Surface Creek 


3 


45 


72 


Uncompahgre 


3 


50 


65 





















GUNNISON BASIN 
















Gunnison River 
















Alexander Lake 




50 


14.9 


33 


9 


21 




Blue Mesa 


3/31 


23 


5 . 6 


10 


8 


7 


1 


Butte 


3/31 










15 


1 


Cochetopa Pass (B) 


3/27 


18 


4*5 


6 


4 


5 


9 


Crested Butte 


3/30 


18 


4.3 


25 


3 


13 


2 


Keystone 






7 .7 


35 


7 


19 


4 


Lake City 


3/26 


17 


4.0 


9 


6 


7 


2 


Mesa Lakes (B) 


3/26 


42 


12.4 


24 


4 


16 


5 


McClure Pass 


3/31 


38 


10.7 


23 


2 


15 


4 


Park Cone 


3/25 


26 


6.0 


16 


5 


10 


1 


Park Reservoir 


3/26 


58 


16.4 


38 


6 


22 


5 


Porphyry Creek 


3/30 


36 


10.2 


21 


1 


16 


2 


Slumgullion 


3/26 


33 


9.0 


16 


1 






Tomichi 


3/30 


24 


6.4 


15 


0 


12 


7 


Surface Creek 
















Alexander Lake 


3/26 


50 


14.9 


33 


9 


21 


4 


Mesa Lakes 


3/26 


42 


12.4 


24 


4 


16 


5 


Park Reservoir 


3/26 


58 


16.4 


38 


6 


22 


5 


Uncompahgre River 
















Idarado 


3/30 


35 


9.4 


19 


0 






Ironton Park 


3/30 


31 


8.6 


17 


0 


13 


3 


Red Mountain Pass 


3/26 


66 


18.3 


37 


5 


29 


7 


Telluride (B) 


3/25 


20 


5.8 


11 


4 


7 


1 



WATERSHED SNOWPACK 
Based on 5 Selecled Snow Courses* 



MA 


1 

!IMUM OF REC 


ORO 




























c::::^ 


1 




IMUM OF REC 





FEB. Isl MflR. Isi APR 1st MAY Ist 

'''Crested BuCCe, IronLon Park, Park Cone, Park 
Reservoir. Porphyry Creek. 



LIST OF COOPERATORS 

The following orgonizoHons cooperate in snow surveys for the Colorado, Platte, Arkansas 
and Rio Grande watersheds. Many other organizations ond Individuals furnish voluable 
information for the snow sun/ey reports. Their cooperotion is gratefully acknowledged. 

S TA TE 

Colornrl^ ^ i , F " WATER USERS ORGANIZATIONS 

---^ ^rJi7w^;-^c^=;- .... 

Colorodo Stole University Experiment Station 

Rocky Mounloin Forest ond Ronge Experiment Station IRRIGATION PROJECTS 

New Mexico Dept. oF Game and Fish Formers Reservoir and Irrigotlon Company 

University of Colorodo, INSTAAR San Lois Valley I r r i ga t ! on D i s t r i c t 

"°"AL cos;iii?tin;v::;:':y'°"''°"'' 

Deportment of Agriculture Montezuma I r r i go t i o n C o . 

Soil 'conVeVv'i,^l„„ S.,,;,. Uncompohgre Valley Water Users' Associol 

Oeporfment ^ruterior T "c h e°ra"l r r tg ^ [ r^n 'c o".' ^""'""^ 

Geological Survey 

Nationol Pork Service CORPORATIONS 

uepartment of Commerce Asoen String r 

^^,^^NOAA,^N.io , weather Service ^f^^Hl' Cor^- 

Notl'onofT'" J c Copper Mountain Ski Area 

God7 J . "/"^ ^P"" Administration Lake Eldora Corp. 

Goddord Space Flight Center Vail A ssoc io te s , In c or poro te d 

INVESTOR OWNED UTILITIES Vermejo Pork Corp. (MM) 

Colorodo Public Service Compony L°o'r a°d o 7 ' • ' ° r' ^ompony 
P-'blic Service Company of New ^Mexico 
MUNICIPALITIES 

Citv of oln - PRIVATE CITIZENS 



Water Supply Outlook tor Colorado and New Mexico — Page 3 

COLORADO RIVER ^^"^BRSHED IN COLORADO 



/ SNOTEL Site 
STREAMFLOW FORECASTS 
Perc eni of 1963-77 Average 

frm no-130-. 

|: 1 90-110% 
l» ' I 70- 90% 
Y / A Under 7(nfe 




SUMMtRV ol SNOW MEkSUREMENTS 



YOUR WATER SUPPLY 

PRECIPITATION FOR THE MONTH WAS 37 PERCENT ABOVE NORMAL. THIS IMPROVED THE 
SEASONAL READING TO 70 PERCENT OF AVERAGE. MOUNTAIN SNOWPACK READINGS TAKEN 
NEAR APRIL 1 INDICATE THE WATER CONTENT TO BE 54 PERCENT OF AVERAGE FOR THE 
COLORADO RIVER BASIN COMPARED TO 38 PERCENT LAST MONTH. HOWEVER, SOME SNOW 
COURSES NEAR THE CONTINENTAL DIVIDE REMAIN ONLY SLIGHTLY ABOVE MINIMUM OF 
RECORD. SNOWMELT RUNOFF PREDICTIONS RANGE FROM 35 PERCENT OF NORMAL ON THE 
WILLIAMS FORK TO 69 PERCENT OF AVERAGE ON THE ROARING FORK RIVER. RESERVOIR 
STORAGE IS 131 PERCENT OF AVERAGE BUT 12 PERCENT BELOW A YEAR AGO. 



STREAMFLOW FORECItSTS (1000 «c Ft ) Ap, 



- Sepi 



FORECAST POINT 






Avcragt 1 


East Fork Troublesome Creek near TYoubiesome 


5 


29 




Blue River inflow to Dillon Reservoir 


95 


57 


Blue River inflow to Green Mountain Reservoir (1) 


165 


57 


287.1? 


Colorado River near Cameo (2) 


1400 


60 


2336.6 


Colorado River near Dotsero (3) 


750 


53 


1422.0 


Colorado River inflow to Granby Reservoir (4) 


140 


64 


218.0 


Eagle River below Gypsum 


150 


50 


697.0 


Roaring Fork at Glenwood Springs (5) 


480 


69 


59.0 


Williams Fork near Parsliall (6) 


23 


35 


48.0 


Willow Creek inflow to Willow Creek Reservoir 


24 


50 


298.0 



RESERVOIR STORAGE (Tliousani >i Fl ) 



WATER SUPPLY OUTLOOK 

























Dillon 


254 


184 


226 


199 




Brush 


Fair 


Poor 


Granby 


466 


367 


245 


220 




Gypsum Creek 


Fair 


Poor 


Green Mountain 


139 


70 


58 


56 










Homes take 


43 


6 


17 


16 










Ruedi 


101 


77 


55 


59 










Vega 


32 


11 


12 


12 










Williams Fork 


97 


70 


44 


33 










Willow Creek 


9 


6 


7 


7 


























Blue River 


8 


38 


52 


Colorado 


20 


38 


54 


Plateau 


3 


45 


73 


Roaring Fork 


8 


47 


61 


Williams Fork 


3 


47 


63 


Willow 


2 


42 


55 



»0W COURSE MEASURMENn 



COLORADO BASIN 
Blue Rtver 



Blue River 
Fremont Pass 
Grizzly Peak 
Hoosier Pass 
Officers Gulch 
Shrine Pass 
Snake River 
Summit Ranch 



Colorado River 



Arrow 

Berthoud Pass 
Berclioud Summit 
Cooper Kill 
Copper Mountain 
Glennuir Ranch 
Gore Pass 
Grand Lake 
Lake Irene 
Lapland 
Lulu 

Lynx Pass 
HcKenzie Gulch 
Middle Fork 

M liner 

North Inlet 

Phantom Valley 
Ranch Creek 
Tennessee Vasf 
Vail Mountain 
Vastjuez 

Plateau Creek 

Mesa Lakes 
Park Reservoir 
Trickle Divide 



Aspen 

Independenc 
Ivaiilioe 
Kiln 
Lift 

HcClure Puss 
Nast 

North Lost Trail 
Williams Fork River 

Glenmar Ranch 
Jones Pass 
Middle Fork 
UCe Pass 
mi low Creek 



Granby 

Willow Creek Pass 





WATERSHED SNOWPACK 
Based on 7 Selected Snow Courses^ 



[ 1 r 

MAXIMUM OF REC 


ORO 




















MINIMUM OF RECOBO 

0^ 1 — — 1 — rn^ 



FEB. l!l MO" 1" OKK 15T •- 

•Berthoud Pass, Grizzly Peak. Independence Pass, 
Lake Irene, Lynx Pass, Shrine F«.. Wallow Creek 



Springtime comes 



Water Supply Outlook for Colorado and New Mexico - Page 4 

SOUTH PLATTE RIVER WATERSHED IN COLORADO 



J W Y 0 Mj I 




SUMMARY of SNOW MEASUDEMENTS 



LEGEh 

Snow CourM, 
* SNOIEL SII, 

-f "63-77 A„„5 
taWi Over 130% 
II I II 110-13CBt 
|::::| 90-1 10% 
I I 70- 
Y/ A Under 70% 



YOUR WATER SUPPLY 

SNOWPACK FOR THE BASIN HAS INCREASED FOR THE MONTH THROUGH A SERIES OF STORMS. 
THE BIG THOMPSON WATERSHED HAS INCREASED FROM 31% OF AVERAGE TO 48% FOR APRIL 
1. CACHE LA POUDRE AND THE SOUTH PLATTE WATERSHEDS INCREASED ABOUT 20% OVER 
LAST MONTH'S READINGS. PRECIPITATION WAS 139% OF AVERAGE. THIS BROUGHT THE 
SEASONAL AVERAGE TO 71Z. STREAMFLOW FORECASTS HAVE INCREASED BECAUSE OF ABOVE 
AVERAGE PRECIPITATION FOR THE MONTH. THEY NOW RANGE FROM 49% ON THE SOUTH 
PLATTE RIVER TO 66% ON THE CACHE LA POUDRE RIVER. RESERVOIR STORAGE IS NEAR 
TO SLIGHTLY ABOVE AVERAGE FOR MOST RESERVOIRS AFFECTING THE IRRIGATED AREAS. 



STKIMFLOW FOMCkSTS (1000 kC. Ft.) Ap,il - Seplembe, 









1963-77 


Bear Creek at Morrison 


16 


58 


28.0 


Big Thompson River at Drake (1) 


61 


60 


102.0 


Boulder Creek at Orodell 


24 


53 


45.1 


Cache La Poudre River ac Canyon Mouth (2) 


160 


66 


243.0 


Clear Creek at Golden (3) 


60 


50 


120.0 


St. Vrain Creek at Lyons 


40 


56 


71.6 


South Platte River at South Platte 


95 


49 


193.0 



WATER SUPPLY OUTLOOK 



RESEBVOIR STORACE (Tlmnsand Ac Ft.) ^ 









Coal Creek 


Poor 


Poor 


North Fork of South 


Poor 


Poor 


Platte 






North Fork of Cache 


Fair 


Poor 


La Poudre 






Ralston Creek 


Poor 


Poor 


Rock Creek 


Poor 


Poor 


South Platte from 


Fair 


Poor 


Greeley to Fort 






Morgan 






South Platte from 


Fair 


Poor 


Fort Morgan to 






Sterling 






South Platte below 


Fair 


Poor 


Sterling 




















Antero 


16 


16 


16 


14 


Barr Lake 


32 


30 


26 


25 


Black Hollow 


8 


3 


5 


4 


Boyd Lake 


44 


36 


42 


37 


Cache La Poudre 


10 


8 


10 


8 


Carter Lake 


109 


93 


106 


99 


Chambers Lake 


9 


3 


6 


3 


Cheesman 


79 


78 


71 


49 


Cobb Lake 


34 


12 


20 


14 


Eleven Mile 


98 


98 


98 


87 


Emp ire 


38 


33 


33 


33 


Fossil Creek 


12 


6 


6 


9 


Gross 


43 


21 


21 


26 


Halligan 


6 


6 


6 


5 


Horse tooth 


144 


121 


127 


109 


Jackson 


35 


33 


32 


34 


Julesburg 


28 


23 


23 


22 


Lake Loveland 


14 


10 


12 


10 


Lone Tree 


9 


3 


8 


6 


Mariano 


5 


5 


5 


5 


Marshall 


10 


5 


8 


5 


Mars ton 


17 


15 


16 


15 


Milton 


24 


18 


17 


15 


Point of Rocks 


70 


72 


70 


66 


Prewitt 


33 


27 


27 


23 


Riverside 


58 


63 


40 


59 


Standley 


42 


34 


41 


25 


Terry 


8 


5 


5 


5 


Union 


13 


12 


13 


10 


Windsor 


19 


14 


14 


12 












Big Thompson 


5 


33 


48 


Boulder 


3 


36 


46 


Cache La Poudre 


9 


45 


60 


Clear Creek 


5 


41 


52 


Saint Vrain 


3 


27 


50 


South Platte 


7 


35 


50 



»ow ima mmmm 



SOUTH PLATTE BASIN 
Boulder Creek 



Baltimore 
Boulder Falls 
Lake Eldora 
University Camp 
Niwot 

Big Thompson Rive 

Bear Lake 
Deer Ridge 
Hidden Valley 
Lake Irene (B) 
Long's Peak 
Two Mile 
Willow Park 

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



Cle 



Creek 



Baltimore (B) 
Berthoud Falls 
Empire 

Grizzly Peak (B) 
Loveland Pass 

St. Vrain River 

Copeland Lake 
Ward 

Wild Basin 
South Platte River 



oe Mountain 
Pass 



3/27 
4/01 
3/26 
4/01 
4/01 

3/30 
3/29 
3/29 
3/27 
3/25 
3/29 
3/31 



3/30 
3/30 
3/30 
3/30 
3/31 
3/30 
3/30 
3/30 
3/31 



3/27 
3/27 
3/27 
3/31 
3/31 



3/27 
3/27 
3/26 
3/30 
3/31 
3/30 
3/30 

3/27 
3/27 



4 .4 
1.2 
15.8 



2.6 
5.6 
3.4 
10.9 
9.0 



8.1 
13.7 
29.3 
15.0 
18.5 
27.5 



11.8 
5.2 
28.5 
13.4 
19,3 
10.8 
27.7 



20.4 
20.0 



10.1 
9,4 
17.2 



WATERSHED SNOVl^PACK 
3Qsed on 5 Selected Snow Courses'^ 



MA 


<IMUM OF REC 


ORD 




















J 


1 




y 

y 






^ 




M) 


^tMUM OF REC 


ORO 



FEB, Isl M4R lit APR Isr MAI 

*Berthoud Pass, Cameron Pass, Deadman Hill. 
Hoosier Pass, University Camp. 



Water Supply Outlook for Colorado and New Mexico — Page 5 

YAMPA, WHITE AND NORTH PLATTE RIVER 
WATERSHEDS IN COLORADO 




SUMMARY of SNOW MEASUREMENTS 



tEGEN 
A Fofceoil Point 

/ SNOTEt Sile 
STREAMFLOW FORECASTS 
Perc ent oF 1963-77 Averogo 
Over 130% 

trm iio-i3(Ri. 

90-110% 
I I 70- 90% 
Under 70% 



YOUR WATER SUPPLY 

SNOWPACK INCREASED FROM 40 PERCENT TO 54 PERCENT OF AVERAGE ON THE NORTH 
PLATTE WATERSHED AND FROM 45 PERCENT TO 64 PERCENT IN THE YAMPA RIVER 
AREA. STREAMFLOW FORECASTS RANGE FROM 37 PERCENT OF AVERAGE ON THE NORTH 
PLATTE RIVER TO 63 PERCENT ON THE ELK AND WHITE RIVERS. PRECIPITATION 
OVER THE BASIN WAS 169 PERCENT OF NORMAL FOR THE. MONTH. THIS BROUGHT THE 
SEASONAL AVERAGE TO 72 PERCENT COMPARED TO 52 PERCENT LAST MONTH. SOIL 
MOISTURE REMAINS FAIR TO POOR THROUGHOUT THE AREA. 



STREAMFLOW FORECASTS (1000 At: Ft ) Ap, 



FORECAST POINT 




% If Aver.iee 


1963-77 


Elk River at Clark 


125 


63 


198.0 


Laramie River near Woods 


60 


48 


125.0 


Little Snake River at Lily 


210 


60 


349.11 


North Platte River at Northgate 


88 


37 


238.11 


liThite River near Meeker 


180 


63 


287.0 


Yampa River near Maybell 


500 


55 


905. iJ 


Yampa River at Steamboat Springs 


170 


62 


273.0 











Elk 


2 


46 


64 


Laramie 


3 


45 


58 


North Platte 


5 


46 


54 


White 


2 


48 


60 


Yampa 


8 


51 


64 



SHOW COUIW HUSURWEHIS 



NORTH PLATTE B,\SIN 
Laramie River 



DeadiKtn Hill 

Mclntyre 

Roacli 

North Platte Ri' 



Cameron Pa! 
Columbine 1 
Northgate 
Park View 
Willow Cr. 

YAMPA BASIN 
Elk River 



Yampa Rlv 



Bear River 
Columbine (11) 
Crosbo 

Dry Lake 

Lynx Pass (B) 

Rabbit Ears 

Tower 

Ynmpa View 



3/31 
3/27 
3/26 



3/27 
3/31 
3/30 
3/31 
3/30 
3/31 
3/31 
3/31 



28.5 
26.4 
9.9 
10.8 
16,0 



13.4 
18.6 
12.6 




Water Supply Outlook for Colorado and New Mexico — Page 6 

ARKANSAS RIVER WA 




TBRSHED IN COLORADO 

SUMMARY o( SNOW MEASUBEMENTS 



LEGEND 
* Fofecoit Point 

/ SNOTEL Site 
STREAMFLOW FOftECASTS 
Perce nt of 1963-77 Average 

PH Over 130% 

nrn no-iso* 

f~l 9o-no% 

I I 70- Wfc 
Y7^ Un<)er7(K 



YOUR WATER SUPPIY 

ABOVE AVERAGE PRECIPITATION FELL DURING MARCH. THIS BROUGHT THE BASIN 
SEASONAL TOTAL TO 64!; OF AVERAGE. SNOWPACK IS NOW AT 62Z OF AVERAGE 
COMPARED TO 44% A MONTH AGO. STREAMFLOW FORECASTS HAVE INCREASED BUT ARE 
STILL BELOW AVERAGE. THEY RANGE FROM 38% FOR THE ARKANSAS RIVER ABOVE 
PlIEBLO TO 67% ON THE HUERFANO RIVER. RESERVOIR STORAGE IS 98% OF LAST 
YEAR AT THE SAME TIME AND 139% OF AVERAGE. SNOW COURSE READINGS IN THE 
HEADWATER OF THE ARKANSAS RIVER ARE ONLY SLIGHTLY ABOVE HINIMUMS OF 
RECORD. SOIL MOISTURE CONDITIONS IN THE AREA ARE FAIR TO POOR. 



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



FORECAST POINT 






1963-77 
Averace 


Arkansas Rivet above Pueblo (1) 


100 


38 


260.0 


Arkansas River at Sal ida (2) 


160 


56 


288.0 


Cucharas River near La Veta 


6 


66 


9.1 


Grape Creek near Westcliffe 


10 


62 


16.0 


Huet&ano River near Redwing 


9 


67 


13.4 


Purgatolre River at Trinidad (3) 


20 


61 


32.8 



RESERVOIR STORAGE (Thoilsand Ac, Fl.) e„oo 



WATER SUPPLY OUTLOOK 





















Adobe 


60 


47 


3 


12 




Apishapa River 


Fair 


Poor 


Clear Creek 


11 


6 


e 


7 




Fountain Creek 


Poor 


Poor 


Great Plains 


150 


13 


0 


43 




Hardscrabble Creek 


Poor 


Poor 


Holbrook lake 


7 


6 


6 






Monument Creek 


Poor 


Poor 


Horse Creek 


27 


20 


22 


5 








John Martin 


621 


74 


38 


59 










Lake Henry 


8 


8 


6 












Meredith 


42 


2 


0 


10 










Pueblo 


351 


63 


63 












Trinidad 


158 


43 


22 












Turquoise 


121 


63 


72 


30 










Tuln Ukes 


68 


42 


33 


26 











Arkansas 
Cucharas 
Purgatoi 



SNOW COURSE MEASUREMEHIS 



ARKANSAS BASIN 

Arkansas River 

Bigelow Divide 
Bruraley 

Cooper Hill (B) 
East Fork 
Four Mile Park 
Fremont Pass 
Garfield 
Hermit Lake 
Monarch Pass 
South Colony 



Apishapa 
Cucharas Cr 
La Veta Pas 



Bourbon 
Whiskey Cr 



3/30 
3/27 
3/30 
3/27 
3/27 
3/27 
3/27 
3/30 
3/30 
3/31 
3/27 
3/26 
3/30 



3/31 
3/31 
3/31 
3/26 

3/30 
3/30 



15.4 
3.8 



8.9 
14.9 



11.9 
10.0 



19.8 
10.7 



13.3 
13.0 
8.4 



10.5 
11.1 
12. C 



10.6 
12.2 



7.2 

10.8 
9.5 
5.0 

15.5 

12.8 
8.9 

16.0 

10.0 
9.8 
6.9 

7.7 



SB)-?n adjacent drainage. 



WATERSHED SNOWPACK 
Based on 5 Selected Snow Courses'' 



MA 


■ 

iMUM OF REC 


ORD 








: . — _ 


























1 




4iMUM OF RE( 


ORO 



FEB. 1st MAR. Isl APR. 1st MAY I: 

*Four Mile Park, Fremont Pass, Porphyry Creek, 
Tennessee Pass, Twin Lakes TUnnel. 





Water Supply Outlook for Colorado and New Mexico — Page 7 



RIO GRANDE WATERSHED IN COLORADO AND NEW MEXICO 






J 1/1- .1 T/'Y 



LEGEND 
A Forecoit Poinf 
• Snw Cajr» 
/ SNOTEL Site 
STREAMFLOW FOfiECASTS 
Perc ent of 1963-77 Ayetaoe 
PS Over 130% 
II 1 II 110-130% 
1 I 90-110* 
I I 70- 9OTt 
Y/A Ur^der7mt 



RESERVOIR STORAGE (Ttiousand Ac Fl ) 




YOUR WATER SUPPLY 

PRECIPITATION DURING THE MONTH WAS 156 PERCENT OF NORMAL IN THE RIO GRANDE BASIN 
IN COLORADO AND 160 PERCENT OF NORMAL IN NEW MEXICO. THIS BROUGHT THE SEASON 
AVERAGE FOR COLORADO TO 63 PERCENT OF AVERAGE AND NEW MEXICO TO 77 PERCENT. THE 
SNOWPACK IN COLORADO IS NOW ABOUT 66 PERCENT OF AVERAGE AND NEW MEXICO IS AT 70 
PERCENT. STREAMFLOW FORECASTS HAVE INCREASED SLIGHTLY FOR THE RIO GRANDE AND 
RANGE FROM 25 PERCENT OF AVERAGE FOR THE RIO GRAMDE AT SAN MARCIAL TO 75 PERCENT 
AT CULEBRA CREEK. RESERVOIR STORAGE IN COLORADO IS 145 PERCENT OF AVERAGE AND 
IN NEW MEXICO 228 PERCENT. RESERVOIR STORAGE WILL HELP TO ALLEVIATE SOME OF THE 
EFFECTS OF THE WINTER DROUGHT. SOIL MOISTURE CONDITIONS RANGE FROM GOOD TO POOR 
OVER THE ENTIRE AREA. 



STREAIIELOW FORECASTS (1000 Ac. Ft) 



























COLORADO 










WATER SUPPLY OUTLOOK V.";", 






Continental 


27 


8 


7 


5 










Platoro 


60 


20 


31 


9 










Rio Grande 


51 


23 


41 


18 










Sanchez 


103 


18 


22 


10 




COLORADO 






Santa Maria 


45 


11 


12 


7 




Sangrc de Cristo Cr 


Fair 


Poor 


Terrace 


18 


0 


7 


6 




Trinchera Creek 


Fair 


Poor 


NEW MEXICO 


















Avalon 


5 


4 








NEW MEXICO 






Caballo 


344 


87 


60 


48 




Embudo Creek 


Fair 


Poor 


Conchas 


273 


37 


75 


133 




Mora River 


Fair 


Poor 


El Vado 


195 


108 


124 


35 




Nambe Creek 


Fair 


Poor 


Elephant Butte 


2195 


1217 


970 


375 




Rio Ojo Caliante 


Fair 


Poor 


McMillan 


34 


22 


9 


20 




Santa Fe Creek 


Poor 


Poor 


Sumner 


11 


32 


90 













l ORt^CAST POINT 






I96J-77 


COLORADO (Aprll-Septeniber) 








Alamosa Creek above Terrace Reservoir 
Conejos River near Mogote (1) 
Culebra Creek at San Luis (2) 
La Jara Creek near Capulin (March-July) 
Los Pinos River near Ortiz 
Rio Grande at Thirty Nile Bridge (3) 
Rio Grande near Del Norte (3) 
Saguache Creek near Saguache 
San Antonio River at Ortiz 
South Fork of Rio Grande at South Fork 
Trinchera Water Supply (April-July) (6) 
NEW MEXICO (March- July) 1 1 <. i 


42 
125 
12 
45 
38 
80 
290 
20 
8 
80 
14 


66 
68 
78 
59 
62 
67 
63 
66 
66 
67 
64 


63.6 
183.0 

15.3 
7.6 

61.3 
119.0 
462.0 

30.1 

12.2 
119.0 

21.9 


Costilla Creek at Costilla (4) 

Jemez River near Jemez 

Pecos River at Pecos 

Red River at Mouth 

Rio Chama at El Vado 

Rio Grande at Otoul (5) 

Rio Grande at San Marcial (5) 

Rio Hondo near Valdez 

Rio Pueblo de Taos below Los Cordovas 

Santa Cruz River at Cundlyo 


11 
25 
16 
19 
85 
215 
85 
9 
9 
4 


71 
75 
42 
70 
48 
43 
25 
70 
47 
34 


15.4 
33.3 
38.1 
27.2 
177 .0 
497.0 
335.0 
12.8 
11.0 
11.6 



SUMMARY ot SNOW MEASUREMENTS 



Alamosa 
Conejos 
Culebra 



SHOW COURSE MEASURWBm 



YE 



RIO GRANDE BASIN-COLO . 



Lily Pond 
Silver Lakes 



Cone 



Riv 



Curabres Pas 
Cambres Tre 
La Manga 
Pinos Mill 
Platoro 
River Sprin 

Culebra Rive 



Brown Cabin 
Culebra 

La Veta Pass (B) 
Trinchera CB) 

Rio Grande 



Big Meadows 
Cochetopa Pass 
Grayback 
Hiway 

Lake Humphrey 



Lov 



Lake 



Middle Creek 
Pass Creek 
Pool Table 
Porcupine 
Santa Maria 
Upper Rio Grande 
Wolf Creek Pass 
Wolf Cr. Summit ( 



3/30 


25 


8.0 






3/27 


4 


0.7 


8.3 


5.2 


3/31 


44 


13.6 


39.3 


18,5 


3/31 


63 


17.7 


47.5 


21.2 


3/31 


47 


12.1 


29.4 


18.3 


3/27 


50 


13.4 


39.1 


22.0 


3/30 


31 


8.5 


23.8 


15.8 


3/31 


2 


0.6 


9.8 


4.4 


3/31 


11 


3.4 


10.4 


4.8 


3/30 


30 


7.2 


11.4 


8.5 


3/31 


16 


5.6 


12.0 


8.1 


3/31 


28 


6.6 


9.2 


8.5 


3/31 


26 


8.2 


23.2 


13.5 


3/27 


18 


4.5 


6.4 


5.9 


3/26 


32 


8.6 


18.0 


14.9 


3/30 


53 


15.8 


38.3 


23.7 


3/28 


19 


4.4 


9.3 


6.3 


3/25 


23 


5.7 


13.6 


9.2 


3/25 


50 


11.7 


27.7 




3/30 


25 


7.8 


21.6 


10.5 


3/24 


14 


2.7 


6.2 


5.2 


3/29 


25 


6.0 


11.4 


9.4 


3/28 


7 


2.0 


7.0 


3.6 


3/28 


23 


5.6 


12.5 


7.3 


3/30 


58 


17.2 


42.8 


25.8 


3/30 


65 


19.2 


45.6 


28.4 



WATERSHED SNOWPACK 
Bosed on 5 Selected Snow Courses' 
Rio Grande Basin , Colorado 





ma: 


IMUM; OF REC 


ORO 





































Ml 

D • 


IIMUM OF RE 


0R0^~^^ 

— :3 



FEB.Ist MAR, lal APR. 1st MAY Isl 

*Cumbres Pass, La Veta Pass, Silver Lakes, Uppc 



Rfd River 
lUo Cliama 
Rio Grande 
Rio Hondo 



SNOW COUKSf HUSURMEMn 



WATERSHED SNOWPACK 
Based on 5 Selected Snow Courses ' 
Rio Gfonde Basin, New Mexico 



- — 1 

MAXIMUM Oi 


.„. 

RECORD 

















< 


^^^^^ 






' RECORD 



Big Tesuqu<; 



APR rst 

.1 , Payrole, Red Rive 



RIO GRANDE MS IN - NH 



Panchuela 

Red Hlver 

UemnCltK Park (B) 
Red Hiver 

RioChama 



Al.imLtos 

Uernal Trail (It) 

Big Tesuque 

Co rdova 

lilk Cabin 

Gallegos Peak 

Hopewell 

La Cueva 

North Costilla 



Pa/role 
quemazon 
Kio En Medio 
San Antonio Sink 
Sandoval 
Senorica Divide 
Taos Canyon 
Tres Ritos 

Rio Hondo 
Taos Powderhorn 



3/30 


1 


0,1 


5,8 


2.0 


3/26 


6 


2,3 


6,1 


3.6 


3/26 


12 


3,8 


8,9 


5.5 


3/30 


36 


9.3 


18.5 


11.3 


3/31 


0 


0.0 


10.0 


1.7 


3/30 


21 


5,6 


18.2 


7.2 


3/31 


16 


5,2 


8.3 


4.9 












3/27 


3 


1.0 


8.2 


4.5 


3/30 


22 


6.5 


16.7 


10.0 


3/30 


3 


1.0 


4.9 


2.5 


3/27 


9 


3.2 


13.9 




3/30 


46 


12.4 


27,2 


15.7 


3/27 


13 


4.1 


11.1 


5.2 








6.4 




3/25 


11 


3.4 


10.8 


6.6 


3/30 


19 


5.8 


16.1 


6.6 


3/31 


38 


10.4 


14.2 


8.5 


3/27 


10 


2.9 


13.3 


8.3 


3/26 


10 


2.9 


13.4 


7,0 


3/30 


17 


5.1 


8.2 


5,1 


3/27 


14 


4.3 


13.8 


5,5 


3/26 


0 


0.0 


6.1 


4,2 


3/31 


9 


2.2 


6.8 


4,7 


3/31 


58 


15.9 


34.4 





Water Supply Outlook for Colorado and New Mexico — Page 8 



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




LEGEND 
J for.™,, P„,„, 

^ SNOTEL"s^e 

OID 110-130% 
ED 90-110% 
?0- 90% 
^/^ U"Jer70% 




YOUR WATER SUPPLY 

SPRING AND SUMMER RUNOFF FORECASTS HAVE INCREASED SLIGHTLY OVER LAST MONTH. 
THEY NOW RANGE FROM 32 PERCENT ON THE MANCOS RIVER TO bh PERCENT ON THE U 
PLATA RIVER. PRECIPITATION DURING MARCH WAS 150 PERCENT FOR THE MONTH 
BRINGING THE SEASON'S AVERAGE TO 63 PERCENT. RESERVOIR STORAGE IS GENERALLY 
AT OR ABOVE AVERAGE FOR MOST RESERVOIRS AFFECTING THE AREA. MUCH OF THE WATER 
IN THE RESERVOIRS WILL BE NEEDED TO SUPPLEMENT WATER SUPPLIES THIS SEASON. 
SOIL fCISTURE IN THE AREA RANGES FROM FAIR TO POOR. 



SUMMARY of SNOW MEASUREMENTS 



Dolores 
San Juan 



UOW COUISE MEASUREMBin 



SAN JUAN-DOLORES BASIN 

Animas River 

Cascade 
Lemon 

Mineral Creek 

Molas Lake 

Purgatory 

Red Mt. Pass (B) 

Silverton Sub-Sta. 

Spud Mountain 

Dolores River 
Groundhog 
Ltz^rd Head 

Lone Cone 
Ophlr Loop 
Mco 

Tellurlde 
Trout Lake 



San Juan River 

Chama Divide (B) 
Chamita (B) 
La Plata 
Mancos T-Dotm 
Upper San Juan 
Wolf Cr. 
Wolf Cr. 



<B) 



3/27 
3/27 
3/26 
3/26 
3/30 
3/26 
3/26 
3/26 



3/31 
3/30 
3/27 
3/27 
3/30 
3/30 
3/30 



5.0 
6.7 
4.2 
10.2 
18.3 
0.0 
9.6 



12.3 
8,6 



0.0 
5.6 
10.2 
11.8 
20.0 
17.5 
19.2 



23.4 
19.6 

23 

22.2 
30.5 
37.5 
14.1 
37.4 



22.4 
25.4 

25.0 

21 

18 

11.4 
23.1 



10.0 
18.2 



37 

49.9 



16.8 
15.7 



6.0 
7 .1 



STREAMFLOW FORECASTS (1000 Ac. Ft ) Ap.ii - Sepi.mbe, 









1963-7 




FORECAST POINT 






Avera 


e 










Florida Klver at Uondad 


16 


52 


4^i 


i{ 


Animas River at Durango 


230 


54 






Dolores River at Dolores 


130 


56 


233 


0 


La Plata River at Hesperus 


15 


64 


23 


5 


Los Pinos River at Bayfield (1) 


120 


59 


204 


0 


Mancos River near Towaoc (2) 


7 


32 


21 


9 


Inflow CO Navajo River (1 S 3) 


365 


60 


608 


0 


Piedra Creek at Arboles 


100 


50 


201 


0 


San Juan River at Carracas 


220 


59 


370 


0 


San Miguel River at Placerville 


75 


60 


124 


0 



WATER SUPPLY OUTLOOK 



Hermosa Creek 
West Dolores Riv 
Williams Creek 



Fair 
Fair 
Fair 



RESERVOIR STORAGE (Itpusanii Ac. Fl ) 















Groundhog 


22 


0 




10 


Jackson Gulch 


10 


5 


1 


5 




40 


23 


19 


19 


Navajo 


1696 


1230 


1014 


692 


Vallecito 


126 


60 


48 


59 



WATERSHED SNOWPACK 
Based on 5 Selected Snow Courses ■ 



r 

ma: 


IMUM OF RE( 


ORO 






























1 


— 

Ml 


HtMUM OF RE 
1 


ORO ~ 



FEB. Isl M«R. Isl APR. 1st i" 
;ade. Lizard Head, Holas Lake. Red Mountain 
5. Tellurlde. 



WATER SUPPLY OUTLOOK BY MAJOR WATERSHED AREAS 



-GUNNISON RIVER WATERSHED 



Describes wQter supply conditions in Delta, Gunnison, Cir 
Soil Conservotion Districts. 



and Uncompahgre 



-COLORADO RIVER WATERSHED 

Describe water supply conditions in DeBeque, Plateau Valley, Mesa, 8ool<cliff Eaale Cnn^K 
Middle Park, South fide, and Mt. Sopris Soil Conservation Districts! "'"S'^ 



-ARKANSAS RIVER WATERSHED 



Describes woter supply conditions in Lake County, Upper Arkansas, En 
Divide, Fountain Volley, Block Squirrel, Central Colorado, Turkey Ci 
OIney Boone, Cheyenne, Upper Huerfano, Spanish Peaks, Purgotoire I 
Western Baca, Southeastern Boca, Two Buttes, Bent, Timpos, Nothi 
KiowQ County, West Otero, East Oterxs, Proirie, Hi ' 
Districts. 



mont, Custer County 
•ek. South Pueblo, 
iver, Trinchero, 
Prowers, Prowers, 
and Double El Soil Conservation 



-SOUTH PLATTE RIVER WATERSHED 

Describes water supply conditions in Fort Collins, Big Thompson, Longmont BoulHpr Vr,li 
Jeffenon, Teller-Pork, Douglos County, Morgon, Kiowa, West Ara Jt,ae WeTt A%, P^' 
Adams, Platte Valley, Southeost Weld' and West Greele^ Soil Conse^ati'on D^ltHcJs Al""'' 
descrrbes water supply conditions in Sedgwick, South Plotte, Hoxton, Peetz Padrfinl* z,^ ° 
Rock Creek, and Yuma Soil Conservation Districts. '-°a'-Qni, Morgan, 



-RIO GRANDE WATERSHED 

Describes woter supply conditions in Rio Grande, Center, Coneios, Mosca Hooper, and 
Costilla, Soil Conservotion Districts. Also describes woter supply conditions in UpperChan 
Eost Rio Arriba, Taos, Lindrlth, Jemez, Santo Fe-Pojoaque, Sondovol, Tijeros, Cubo and 
Edgewood Soil Conservotion Districts. 



-YAMPA, WHITE AND NORTH PLATTE RIVERS WATERSHED .DOLORES, SAN JUAN, AND ANIMAS RIVERS WATERSHED 

Wh?teR'ivr onH"r?S''' "''^"i°"V';/^°"'P°' West Roott, EosI Routt, North Porf, Describes water supply conditions in Son Miguel Bosin, Dove Creek, Dolores, Monco., LoPbto, 

White River, ond Douglos Creek Soil Conservation Districts. ^f^^ San Juan, Son Miguel Basin, and Glade Pork Soil Conservation DIsh-icts.