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. <br /> COLORADO BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of+0.2 indicates that the basin water SURFACE WATER SUPPLY INDEX <br /> supply is near normal. Precipitation for the month was 141% s C°'°r'°°p` <br /> of normal, and is 105% of average for the water year. Flow 4_ f <br /> at the key index gaging station, Colorado River near Dotsero, - 3- 1 Y q ;�- <br /> averaged 4874 cfs as compared to the historic monthly a _ "' • <br /> average of 5732 cfs. Basinwide reservoir storage was 99%of <br /> .. <br /> . ,.�..�. .1, ., <br /> .._.. r <br /> average on July 1, 1991. Dillon Reservoir, Green Mountain 1 I <br /> Reservoir,Williams Fork Reservoir,Vega Reservoir,and Ruedi i u ," —rilli cri <br /> t <br /> Reservoir have near normal storage levels. Rifle Gap Reservoir _ , '1 I <br /> and Granby Reservoir have storage contents well below - _�- 119 <br /> normal. Granby Reservoir contents (usable) measured a <br /> 277,621 acre-feet on July 1. This represents a net increase of "3- <br /> 131,021 acre-feet for the month of June. The Windy Gap -4 , ............................ ,,.... ... <br /> JANl7 JANS3 JANM JABS JAMB JAN17 JAN36 JANB11 JAN00 JANY1 <br /> project operated all June diverting water to Granby Reservoir. 117HTW 7GAA <br /> Vega Reservoir contents measured 31,868 acre-feet on July 1. <br /> This is nearly 90% of capacity. <br /> Outlook: <br /> Water supplies are adequate to meet demands for the COLORADO RIVER NR. DOTSERO . <br /> remainder of the water year. 3.Z '`°w"""T�'ram <br /> S a <br /> 7-• -/ <br /> Administrative/Management Concerns: I.S. - <br /> The Dotsero call (January 7, 1902) to satisfy the 2: <br /> Shoshone Hydroelectric Power Plant diversion right of 1250 4 <br /> cfs is likely to go into effect in early August. Tributary flow a ,.6 <br /> has been steady and has allowed a number of junior rights to v 1.4 , ' <br /> stay in effect. '' - <br /> g.e �,r <br /> Public Use Impacts: g:4 , 1l <br /> Rifle Gap Reservoir, a high-use recreation facility, is 0.2 , r <br /> expected to recover from its extremely low levels. 0 <br /> Oct Nov Ow Jan Feb March brie May Jun. July Aug Soot <br /> Recreational uses on the Colorado River and Roaring Fork <br /> 11191 <br /> River has improved over last year with higher flows. ° "�"'~' 4 °�`1' o e <br /> Colorado River Basin Reservoir Supplies <br /> 140 <br /> 130- <br /> 110 <br /> il 100..^ <br /> bi-, _2" \ <br /> il 70 <br /> 60 r <br /> a /\sa 4a_,/\ <br /> 30 <br /> 70 <br /> Groan Mountain floc' 6(1ltans Fort <br /> ® Avg.5/30 Content. ® 3130/S1 Contents <br /> 7 <br />