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ws? \YDttJZ D Water Supply Outlook for Colorado and New Mexico - Page 4 SOUTH PLATTE RIVER WATERSHED IN COLORADO . .. o PA S 0 INI IE SUMMARY of SNOW MEASUREMENTS (COMPARISON ....ITH PREVIOUS VEARS) . .. ~ 10 0 10 20 30 , "'N~ . IlIVER ~N Numb.' 0' , HI> .r.E "R, '100" -Of Cour,.. .." TE R .o.s PE RCENT OF SUs....." TERSHED Aver.led L.'. Ye., r '...- 10 A",.,... Big Thompson 7 62 85 Boulder 5 38 63 Cache La Poudre 8 60 85 Clear Creek 5 55 83 Saint Vrain 3 33 54 South Platte 7 63 107 SlOW COUll MWUREMBlTS LEGEND . Forecast Point . Snow Course , SNOTEL Site STREAMFLOW FORECASTS Percent of 1961-80Average _ Over 130% m 110-13<7*> E;J 90-110% E*lWfl 70- 90% o Under 70% CUIIIIENT INFOIlMATION P.o.sT IIECORD '1l WATlII CONTlNT DATI INOW WATER C.NCMES) ..OW COURSE Of' DCEPTM CONTINT MlRYaT C"CHIS) ("CHIS) LAST I Ave nAil 11-10 fD1IB PlATIE BASIN lbulder Creek Ba.l tiIoore 4/25 10 1.0 10.3 4.6 )Soulder Falls 4/27 30 9.6 21.0 12.3 lake Eldora 4/29 7 2.0 17.2 9.3 Niwot 4/25 30 8.8 20.8 10.3 University amp 4/27 43 13.6 25.4 18.8 Big ~ River ! Bear .lake 5/01 48 15.3 23.8 16.7 Deer Ridge 4/29 2 0.7 8.1 2.8 Hidden Valley 4/29 13 4.6 11.1 10.5 lake Irene (B) 5/01 71 22.4E 31.8 22.9 longs Peak 4/29 37 10.7 ?O.O 12.4 'tWo MUe 4/29 49 14.1 18.8 17.5 Willow Park 4/30 53 21. 2E 31.0 21.5 Cache 1& ~udre Bennett Creek 4/29 9 2.9 3.4 5.2 Big fbutb 4/30 0 0.0 6.3 0.5 Qmeron Pass 4/30 72 30.0 34.4 32.1 O)~T'S lake 4/30 2 0.7 9.2 6.8 DesuJrnAn Bill 5/01 51 17.7E 72.6 18.0 ItJurglass lake 4/29 14 3.9 3.5 6.5 .be Wright 4/30 70 ')8.0 35.8. 28.7 IDst lake DISCO TINUEl Pine Creek 4/30 0 0.0 3.6 0.6 Bed Feather DISCO TINUEl Clear Creek . Balt:lDDre (B) 4/25 10 1.0 10.3 4.6 Bertboud Falls 4/27 30 9.6 'J 1.0 12.3 &!p:lre 4/25 24 6.3 2.1 7.5 Grizzly Peak (B) 4/29 54 8.8 >5.2 :;10.0 lDveland Pass 4'/29 38 13.8 '0.8 15.1 St. Vrain River (bpeland lake 5/01 2 0.6E 6.6 2.8 Ward 4/29 7 1.8 1.5 5.6 Wild Basin 4/30 28 8.9 5.8 12.4 South Platte River Om> 4/29 18 5.6 10.1 5.0 Geneva Park 4/26 11 1.4 5.1 1.8 IbrseslDe It>untain 4/29 41 12.9 13.8 10.5 IiJosier Pass 4/25 42 12.7 18.9 12.9 Jefferscn Creek 4/29 27 8.4 13.6 8.4 Mosquito 4/25 28 7.7 12.2 6.7 Sundance N/S Trout Creek 1>>a8& 4/30 6 2.2 7.2 2.1 YOUR WATER SUPPLY THE SOUTH PLATTE BASIN HAD ONLY A SLIGHT INCREASE IN SNOWPACK DURING APRIL, A RISE OF 2% TO 84% OF AVERAGE. ~~Y OF THE SMALLER SUBBASINS ACTUALLY DECREASED SOMEWHAT DURING THE MONTH WITH THE EXCEPTION OF THE SOUTH PLATTE RIVER AT SOUTH PLATTE, WHICH INCREASED IN VOLUME BY 24.000 ACRE~FEET. ALL OF THE OTHER FORECASTS EITHER REMAINED UNCHANGED THIS MONTH, OR DECREASED SLIGHTLY. RESERVOIR STORAGE'IS CURRENTLY 110% OF AVERAGE FOR MAY FIRST. THIS IS 10% ABOVE THE STORAGE LEVELS OF LAST YEAR AT THIS TIME. LOWER ELEVATION PRECIPITATION HAS BEEN BELOW NORMAL FOR THE MONTH, AND SOIL MOISTURE HAS BEEN ESTIMATED AS IN POOR CONDITION THROUGHOUT MOST OF THE REGION. THIS YEAR'S WATER SUPPLY OUTLOOK APPEARS TO BE FAIR TO POOR ESPECIALLY IN THE LATE_SFJlqON. STREAMFLOW FORECASTS (1000 Ac. FtJ April - September FORECAST POINT Forecall 1961-~ Aver_Me 'lio ~f Av~ra&e Bear Creek a i: Morrison 26 90 28.7 Big Thompson ll1ver at Drake (1) 97 85 114,0 Boulder Creek at Orodell 38 81 46,7 Cache La Poudre liver at Canyon. Mouth (2) 230 86 268.0 Clear Creek at Golden (3) 106 84 127.0 .St. Vrain Creek at Lyons 55 70 78.8 South Boulder Creek near Eldorado Springs 37 86 42.1 SQuth Platte ll1ver at South Platte 197 100 197.0 (II nl>.un"J flow p'''' b,","1I '" ,,,..., pion", III Oh",,,.J II... ."Utl ".,"-bOIl" dll"'''on. ,Iu, .unHlplI' G"cJ '1',.,Oholl clUlflrslon,. I') Oburtlf'tI I'ow .i"u. .I,..,., i_ .. ..n.... ...... ... CIt, .. a.w.. .. C"'c" Ill" ....a-. WATER SUPPLY OUTLQOK Expressed as .Poor. Fal', Averale. E.. cellent- With Respecl 10 Usual Supply. Fl.. P.n.. STREAM .. AREA s.,,". Se.... L.. s..... Coal Creek Fair Poor North Fork of South Avg. Fair Platte North Fork of Cache Avg. Fair La Poudre Ralston Creek Fair Poor Rock Creek Fair Poor South Platte from Avg. Fair Greeley to Fort Morgan South Platte from Fair Poor Fort Horgan to Sterling South Platte below Fair Poor Sterling / / ( RESERVOIR STORAGE (Thousand Ac. ftJ END OF MONTH ...," .. Su_ u..,. U.alll. s_... -.. C..'IF Th.. L... I,'"'.eo RISERI/OIR Y..r Ve.' A_... Antero 18 16 16 14 Barr Lake 32 29 27 26 Black Bollow 8 4 4 4 Boyd Lake ..8 40 41 37 Cache La Poudre 10 10 10 '8 Carter Lake 114 98 104 103 Chamber. Lake e 5 3 4 Cheesman 19 79 79 56 Cobb Lake 34 19 21 14 Eleven HUe 98 98 98 89 &Dpire 38 35 28 32 Foss11 Creek 12 7 0 9 GrOSB 43 25 26 22 Halligan 6 6 6 5 Borsetooth 144 122 136 177 Jackson 35 36 23 34 Julesburg 28 22 21 23 Lake Loveland 14 11 10 10 Lone Tree e '9 8 7 Kariano 6 6 5 5 Marshall 10 10 9 6 Harston 18 16 17 16 Hilton 24 18 19 16 Point of Rocks 70 72 70 67 Prewitt 33 27 26 23 Riverside 58 64 61 57 Sp inney Mtn. 48 47 - - Standley 42 34 37 26 Terry 8 5 6 6 Union 13 12 13 11 Windsor 19 13 16 12 Horsecreek 16 15 13 16 , NS-No suruey, (B)-On adjaaent drainage. E - Estimated from SNOTEL. WATERSHED SNOWPACK Basld on ~ Sell c lid Snow Cours.. * ~ Z &II 3S .:~::+i:'::&</'<r:::..' ..':.. ....... ~ ..... r...~....... MAXIMUM. CW 130_,c."ti/]4k':.> e .$,t:tf:}~t~~~~:~~:,.;,~f<;". ~ &II ~ ;20 ~ 15 z II) ~ 10 : 5...........,;:~:!hX<t:::-:,..:.<, ~...;:>?:l..i~:~:i/ ..\.':~:.~::. . ,..':.';:\:/':;.....:'\".: :.: ~ o;~r..<>.~:..~~.P;..:. MIN'...U....O, . "(~OIlD .....:.:::.:... FEI. .., MAR. I.' APR. ,., MAY. let ~Berthoud Pa.s. Cameron Pass. Deadman Hll1. HooBier Pas8. Univer8ity Camp.