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;r <br /> GUNNISON BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of-1.9 indicates that for January the GUNNISON RIVER BASIN <br /> Surface Water Supply Index History <br /> basin water supplies were below normal. The Soil 5 <br /> Conservation Service reports January 31 snow pack at 67%of 4_ <br /> normal. Storage in Taylor Park, Crawford, and Fruitland <br /> w 3- <br /> reservvirs totaled 105%of normal on January 31. Flow at the __, <br /> gaging station Uncompahgre River near Ridgway averaged :M--- • Ma J - <br /> 44.4 cfs as compared to the 1961-1993 January average of J 1_,— ,= r- <br /> _ <br /> 43.6 cfs. A snowstorm on January25 and 26provided onlyo ° Y... ) _. ki_ I <br /> vi l',--_, , . ,, <br /> limited relief to the very low snowpack. On February 2, basin ;` <br /> administrators determined snotel data in the Gunnison River fr. - <br /> a <br /> drainage showed a snow water equivalent of 62%of average. 0 I <br /> Reservoir storage remains good with approximately 50% 3- <br /> carryover for Grand Mesa Reservoirs. -4 ". .' ' .. ..,....'"........"".... <br /> JANB5 JANB6 JAN87 JANBB JANB9 JAN90 JAN91 JAN92 JAN93 JAN94 <br /> AONT W YEAR <br /> Outlook <br /> Some major storms will be needed to bring the snow <br /> pack up to normal. <br /> Administrative/Management Concerns UNCOMPAHGRE RIVER NR R I DGWAY <br /> Releases from Aspinall Unit reservoirs were recently 24 FLOW BY""TER YEAR <br /> reduced because of the low snowpack and predictions for the 22 <br /> 23 <br /> runoff to be considerably less than average. Basin 20 . -V . <br /> 19 administrators collect snow course data on Grand Mesa. The s ;e II <br /> snow water equivalent (SWE) of these sites and with <br /> nib _- <br /> comparison to the 1975-1993 average amounts are shown o- ;; <br /> below. o 13 <br /> w.Z 12 <br /> �, <br /> J 10 <br /> 1994 Avg. % of g a - ---------------3- 4-7'11: — . <br /> Site Elev. SWE SWE Avg. 6 �,r____---- <br /> Shaw Pasture 8320 4.75 6.40 74% 5 `' <br /> Cole #5 Res. 8800 6.00 8.90 67% 3 �' <br /> 0„ Nov Dec Jan Feb Mar Ch <br /> Marcott Res. 9600 7.60 14.2 54% 140NTH <br /> Park Res. 10000 10.4 16.0 65% ° WET(1994, ° PRY , AVG x 994 <br /> Leon Lake 10400 12.2 19.4 63% <br /> REPRESENTATIVE RESERVOIRS <br /> GUNNISON RIVER BASIN <br /> 70 <br /> 60 / \\, <br /> 50—//� <br /> \\\\ <br /> n <br /> •f3 40 <br /> °E 30 <br /> a <br /> � 20 i <br /> 10 / <br /> 0 /- \ tz. ,/h\\\ <br /> Taylor Part Crawford Fr uIt land <br /> V/1 Avg 1/31 Contents r\-7 1/31/94 Contents <br /> 6 <br />