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COLORADO BASIN • <br /> Basinwide Conditions Assessment: <br /> The SWSI value of+0.1 indicates that for December COLORADO R I VER eA5 I N <br /> the basin water supplies were normal. The National Weather 5 '"'"'"`t'"Supply, History <br /> Service reports December precipitation at 34% of average. 4_ .. - <br /> The Soil Conservation Service reports January 1 snowpack at W 3 - ; ...,., I: <br /> 97% of average. Flow at the gaging station, Colorado River - • 1.1 ; <br /> near Dotsero, averaged 1498 cfs as compared to the 1961- - r= <br /> 1990 December average of 1038 cfs. Basinwide reservoir 1 1- :"P 1 r " <br /> storage was 96% of average on January 1. i ° Jrl - ' fl <br /> 1i. '�% <br /> - �, �, <br /> Outlook: ; = <br /> . -2 <br /> It appears that the river flows on the Colorado and o <br /> Roaring Fork will remain close to normal during the winter 3_ <br /> months. It is still too early to determine what the trends will -4 t 4 .. . .. <br /> JANB3 JANB4 JANBS JAMBE JANB7 JANBB JANBB JAN80 JAN91 JANB2 <br /> be for next spring's runoff and irrigation season. .QNTW YEAR <br /> Administrative/Management Concerns: <br /> As is the usual case during the winter,water rights on <br /> the Colorado River above Dotsero continue to be regulated by COLORADO R I VER NR. DOTSERO <br /> the 1250 cfs Dotsero Call (1/7/1902). this call is used to SB0 FLOW BY WATER YEAR <br /> satisfy the Shoshone Hydroelectric Power Plant and curtails 450 <br /> any out of priority transmountain diversions and winter <br /> 400 <br /> reservoir storage. Some ditches are still diverting water for 1 <br /> domestic and stock watering. This is also a critical time of the j "° <br /> year for augmentation plans above Dotsero, as releases are a 30 <br /> 0 <br /> required to replace uses. There are no other river calls during f 250 <br /> the winter on either the Colorado below Dotsero or up the <br /> no <br /> entire Roaring Fork river. <br /> 150 <br /> Public Use Impacts: "°° <br /> Since the snowfall in December has been so light, ski 30 Fob ,,,e. <br /> areas have been active in making snow. Water used in snow AgNTN <br /> making competes with the needs of hydroelectric power, "eT YEAR <br /> t DRY YEAR 1977) a AVG a 190 <br /> municipalities, stock watering, storage, and maintaining - <br /> minimum stream flow. Snow making rights are typically <br /> junior and require releases from storage to replace depletions. <br /> Despite the dry Decembet the ski areas have maintained good REPRESENTAT I VE RESERVO I RS <br /> skiing. 100 COLORADO RIVER BASIN <br /> B° <br /> V/ .,, <br /> i <br /> n ,/\ <br /> .1 <br /> 1i 3° <br /> 5F 7\\\ <br /> Mt; 40 <br /> i 30 "\\\\ A. <br /> t <br /> 20_.,///".,\ /\\/\ <br /> 10 <br /> o-«n uount.In Rued! Williams Fork <br /> ® Avg 12/31 Contant. ® 12/31/81 Cdnt.nt. <br /> 7 <br />