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COLORADO BASIN 1/1997 <br /> Ji <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 3.3 indicates that for December the COLORADO RIVER BASIN <br /> )asin water supplies were well above normal. The Natural 5 _ Surface Utter supply index History <br /> Resources Conservation Service reports January 1 snowpack ,- <br /> as 160%of normal. Flow at the gaging station Colorado River _ <br /> near Dotsero averaged 1,200 cfs as compared to the long term 3 .^e <br /> average of 1,054 cfs. Storage in Green Mountain,Ruedi, and 2- <br /> Williams Fork reservoirs totaled 111%of normal as of the end ! ,- ; <br /> of December. Q ,,,t <br /> .,� a tl u�?� � i c,,=W <br /> --..il <br /> J <br /> Outlook <br /> y , <br /> Precipitation for January looks optimistic. Williams - - <br /> Fork, Green Mountain, Dillon, and Ruedi Reservoirs are 3 <br /> pulling water levels down for power generation,an act which -• •---..-.-.. .. <br /> JAN88 JAN89 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 JAN97 <br /> also coincides with reaching desired spring flood control LONTWYEAR <br /> levels. <br /> Administrative/Management Concerns <br /> Public Service has taken their 1,250 cfs Shoshone call <br /> (12-5-1905) off until mid March for maintenance work on the COLORADO RIVER NR. DOTSERO <br /> power plant. It is typical for Public Service to rebuild one of FLOW WATER YEAR - <br /> 5QQ - <br /> their two turbine units at the site each winter while the 450 <br /> second unit runs at approximately 700 cfs. <br /> 400 <br /> Upstream of Shoshone,Green Mountain Reservoir has f <br /> its 1,726 cfs hydroelectric power call (8-1-1935) on. '^ 350 <br /> Downstream of Shoshone, the Orchard Mesa power canal is o i 300 <br /> diverting 800 cfs for their hydro plant. The 800 cfs is the g 250 <br /> total through the Government Highline Canal. There is no 5 2,0 <br /> call for this right. <br /> ,SQ <br /> Public Use Impacts '°° <br /> The U.S. Fish and Wildlife Service has an option for 50 <br /> Oct Nov Oac Jan Feb March <br /> up to 31,000 acre-feet of releases from Ruedi Reservoir from MONTH <br /> mid August through October of 1997 for recovery of ° WET °'' ° DRY[1977� 6 % ,997 <br /> endangered fish in the Colorado Basin. Meetings continue <br /> with interested parties to determine the impacts on the Frying <br /> Pan River and the feasibility of supplementing the flow with <br /> releases from Wolford Mountain Reservoir. REPRESENTATIVE RESERVOIRS <br /> COLORADO RIVERBASIN <br /> 110 <br /> .' 09 -::7 <br /> i 76/\ <br /> j <br /> — 6Q_,./.7\ <br /> r <br /> ,. <br /> b g sQ <br /> r �o <br /> B. <br /> r <br /> �' 30 <br /> .../"\\ <br /> 20 <br /> 1Q J/ \\ // \\ // \\ <br /> Green Mountain Ruedl WI I I Ion.Fork <br /> 171 Avg. 12131 Content• ® ,213'V 96 Contento <br /> 7 - <br />