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A • ' <br /> r_ <br /> COLORADO BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +0.3 indicates that for December COLORADO RIVER BASIN <br /> the basin water supplies were normal. The Soil Conservation 5 Sur'"'""" Supply History <br /> Service reports December 31 snowpack at 108% of normal. 4 k <br /> Storage in Green Mountain, Ruedi, and Williams Fork W 3 ; <br /> reservoirs totaled 87% of normal on December 31. The ; ' <br /> National Weather Service reports December precipitation as 2 J , <br /> 78% of normal. Flow at the gaging station, Colorado River 1r <br /> near Dotsero, averaged 1128 cfs as compared to the 1961- D - 1✓ �F .1t <br /> 1991 December average of 1038 cfs. t F <br /> Outlook 1 lF - <br /> There seems to be quite a bit of variation in snowpack -, <br /> amounts on various drainages. Overall the outlook so far is -4 • <br /> JAN84 JAN85 JAN88 JANB7 JAMB JAN89 JAN90 JAN91 J/4422 JANO3 <br /> better than the previous few years. MICNTW YEAR <br /> Administrative/Management Concerns <br /> Some water is being stored and/or used for fisheries <br /> or power generation. The Shoshone call (1/17/1902) used to <br /> satisfy the Shoshone Hydroelectric Power Plant in Glenwood COLORADO RIVER NR. DOTSERO <br /> Canyon has remained the same through December. On 500 FLOW OW WATER YEAR <br /> January 4 this call went off due to annual maintenance on 430 <br /> one of the two generating turbines at the power plant. When <br /> 400 <br /> this call goes off, it allows most reservoirs to store and <br /> transmountain diversions to operate. The reservoirs and "° <br /> diversions on the Blue River above Green Mountain Reservoir a• �°0 <br /> are subject to the power generation right below Green g 250 <br /> Mountain Reservoir. This includes Dillon Reservoir, Roberts 200 <br /> Tunnel, snow making operations at Keystone and <br /> 150 <br /> Breckenridge, etc. The U.S.B.R. also has to pay attention to <br /> the amount of water released from Green Mountain Reservoir 1D0 <br /> for power generation due to icing problems on the Blue River <br /> Dot Nov Dsc Jan Feb wren <br /> above Kremmling. About 200 cfs is the maximum release. MONTH <br /> CI WYr 0094) o OIK C 1877) A AVG A 1113 <br /> Public Use Impacts <br /> A good snowpack provides for a wide range of winter <br /> time recreation such as skiing, snowmobiling, sledding, etc. <br /> Hopes are high that the above-average amounts will continue. REPRESENTATIVE RESERVOIRS <br /> COLORADO RIVER BASIN <br /> 90 <br /> 00 / <br /> 70 <br /> 1-4 <br /> h 40 <br /> • <br /> 30-_::://///\:: <br /> 20 <br /> Orton Uountsln Ra41 •IIIImAs Fork <br /> ® Avp. 12/31 Contents ® 12/31/02 Contents <br /> 7 <br />