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GUNNISON BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of+0.1 indicates that for March the GUNN I SON RIVER BASIN <br /> basin water supplies were normal. The National Weather s '"'"'lister Supply Inds.»"`"y <br /> Service reports precipitation for March at 268% of average. <br /> The Soil Conservation Service reports April 1 snowpack at r t <br /> La _ _ <br /> %. a— : "'.' . <br /> 94% of average. Basinwide reservoir storage was 135% of • - .: <br /> average on April 1. Flow at the gaging station, Uncompahgre 2 ,,--; = , <br /> River near Ridgway, averaged 67 cfs for the month as 1 '- --: ;, NF-y <br /> compared to the 1961-1991 March average of 60.6 cfs. 9 o I �""' L c R -,k a ,- <br /> _� ftu,. IR ._, IR a <br /> II <br /> Outlook 6 <br /> } ti' ;r n i <br /> Snowpack in the basin varies significantly. Below [[ <br /> average runoff is expected for the Gunnsion River Basin above 3 <br /> Gunnison and for Water District 40. Because much of the -4 <br /> JAN63 JANB4 JANO5 JANYi JAN97 JANW JANBB JAN40 JAW1 JlJ 2 <br /> snowpack is the result of wet spring snows, a fast and early AONTW YEAR <br /> runoff is likely. <br /> Snowpack in the upper Gunnison is poor at 60-70% <br /> of average. The result is that many streams which do not <br /> require administration in average years will need to be UNCOMPAHGRE RIVER NR. R I DGWAY <br /> administered this year. 24 "°e err""TE' " <br /> 23 <br /> 22 - <br /> Snowpack on Grand Mesa varies from 100% of 2 2 0 <br /> average on the west end of the mesa to 75% of average for i ;g . <br /> Surface Creek and Streams to the east of Surface Creek. id <br /> Anticipate a below average year for Surface Creek and streams 17 <br /> a. 15 <br /> 1, <br /> further east. Predictions for Surface Creek are based on USGS W g 12 f <br /> snow measurements plus snow measurements which the 1- 11 �� <br /> Division of Water Resources has historically made all winter <br /> long but this year measured only once due to budget <br /> restrictions. s <br /> 3 <br /> Oct Nov DK Jo. Feb ',arch <br /> Snowpack in the San Juan Mountains is near average, <br /> 0 with a fair amount of snow even at lower elevations. This warOM`"'� WOG OM <br /> snowpack should yield good runoff in the Uncompahgre and <br /> San Juan River drainages. <br /> REPRESENTATIVE RESERVOIRS <br /> G100l5(yl 2I400 BASIN <br /> 70 <br /> G0- <br /> Z se <br /> :;7:"\//////\ <br /> 4- <br /> .1 40--/ //-\\* <br /> ii <br /> g F 30 <br /> -:// <br /> i20 <br /> :////// \\ <br /> 10 / N r/////\\ rf/-ff <br /> Thy for Pr lc Craw,ortl Fruitland <br /> ® A . 3/31 Oont•nt• ® 303V22 Contents <br /> 6 <br />