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i 4- <br /> COLORADO BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of+1.3 indicates that for December COLORADO RIVER BASIN <br /> Index <br /> e basin water supplies were above normal. The Soil Surface <br /> Water <br /> SupplyHistory <br /> Conservation Service reports January 1 snow pack at 92% of <br /> normal. Storage in Green Mountain, Ruedi, and Williams 3 <br /> Fork reservoirs totaled 121%of normal on December 31. The . , j <br /> - <br /> National Weather Service reports basin precipitation as 58% 2 <br /> of normal during December. Flow at the gaging station 1 <br /> Colorado River near Dotsero averaged 1,020 cfs as compared i 0 "- d v,, ,r,,,r) <br /> 1 r/rto the 1961-1992 December average of 1,054 cfs. . <br /> ,, <br /> Outlook <br /> Base flows in streams are expected to remain at or -3 ) <br /> above average during the winter. Although it is early in the -4 ....... ............................................... ... .........., <br /> JAN95 JAN80 JAN87 JAN9B JAMBS JAN90 JAN91 JAN92 JAN93 JAN94 <br /> snowfall season and there is much time for conditions to E MONTH/YEAR <br /> change, the below average snowpack has started to cause <br /> concern among water users. <br /> Administrative/Management Concerns <br /> The 1,250 cfs (1-17-1902) senior right at the COLORADO RIVER NR. DOTSERO <br /> Shoshone Hydroelectric Power Plant has been removed during 500 FLOW B,WATER YEAR <br /> the period January 1 through February 28 while maintenance 450 <br /> is performed on the generating turbines. This creates a free <br /> 400 <br /> river situation and allows the upstream reservoirs to store i <br /> 350 <br /> water in priority. Some reservoirs, which contain more t n <br /> storage than usual, continue to release water to generate o, 300 <br /> power and to gradually lower levels for next spring. g 250 <br /> 5 200 <br /> ablic Use Impacts i <br /> 15O <br /> Various ski areas are still making snow. As the flow <br /> a. <br /> gradually decreases on the small creeks, cautions are taken to <br /> ensure that minimum stream flow rights are protected. 50 , <br /> Oct Nov Dec Jan Feb larch <br /> MONTH <br /> 0 WET[1984) O DRY[1977) A AVG X 11194 <br /> REPRESENTATIVE RESERVOIRS <br /> COLORADO RIVER BASIN <br /> 110 <br /> 100- <br /> 90- <br /> fi n n V X <br /> .I GO <br /> g; _//\\ <br /> a0 <br /> a <br /> • 40 , <br /> . <br /> 30" : :\\\\\ ////^\\\0I\\\\ / \ //\\ <br /> Green Mountain 19*41 V1111•..Fort <br /> ® Av.. 12/51 Contents ® 12/31/93 Content' <br /> 7 <br />