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- COLORADO BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of+1.3 indicates that the basin water SURFACE WATER SUPPLY INDEX <br /> supply is above normal. Precipitation for the month was • `"'"" ""ir'"'" <br /> "-7%of normal,and was 106%of average for the water year. 4 <br /> lw at the key index gaging station, Colorado River near 4 i;i l' <br /> Dotsero, averaged 1365 cfs as compared to the historic 1 IanI I <br /> inI milli 1 1 1 <br /> monthly average of 1423 cfs. Basinwide reservoir storage was ? , III 1 1111111 n , 11, <br /> III 1 111111h III,+ 111,1 111' <br /> • I lrn, � 1 I1unu nnl �11. 1 <br /> 99% of average on October 1, 1991. Dillon Reservoir, Green ' ;I ,r IIiiii I!Huh ,I Hum 1116111Iiiiiii i t <br /> Mountain Reservoir,Williams Fork Reservoir,Vega Reservoir, 1 e ,I,I,I r1111i„ , , <br /> U <br /> Illlil f11111111i1111'and Ruedi Reservoir have near normal storage levels. Rifle ' ll 1111111 illy ILl11���1 I.Gap Reservoir and Granby Reservoir have storage contents ,'1�,111s .: , I 11 1,1 <br /> well below normal. Basinwide conditions are better than the a. <br /> past three years. '' <br /> .4 <br /> .ww y►wa .W.. dMAs .MA. JMK7 JAMS .ww JAM. JMN <br /> Outlook ,m„,.,m <br /> Water supplies in the Colorado and Roaring Fork <br /> Rivers will be more than adequate to meet demands for the <br /> remainder of the year. Base flows in smaller side tributaries <br /> have been enhanced by above average precipitation and <br /> should remain close to average throughout the fall and winter. COLORADO RIVER NR. DOTSERO <br /> 7.! R0.IN IMP TWA <br /> Administrative/Management Concerns: ' ' _ .,.�' <br /> Fluctuations in river flows caused by rainy periods •.. <br /> have caused river calls to change more often than anticipated. . 2.4 ' ` <br /> The Dotsero Enlargement call of 158 cfs (May 15, 1929) to i^ . <br /> satisfy the Shoshone Hydroelectric Power Plant diversion was . <br /> in effect until September 13, 1991 when it was reduced to its xa ,:� . <br /> 1250 cfs right (January 7,1902). It remained on until ; 1.2" _�.� ' <br /> September 30 when the power plant was shut down for d _ <br /> lintenance. The Cameo call of 119 cfs (April 26,1914)was ••' s <br /> acted on September 2, removed on September 13, and <br /> enacted again on September 30th. Releases were made out of o <br /> OR NW Ow .r" h� ~oh Or11 w .1w Jell' Awe l•be <br /> Green Mountain to replace all consumptive uses and to satisfy WITH <br /> O Nr 2+02.3 4 om(1277) • wA • 444+ <br /> the river calls. <br /> Public Use Impacts: <br /> Most of the reservoirs, except Rifle Gap and Granby, <br /> have remained high during the summer and have provided Co I orado River Basin Reservoir Supplies <br /> excellent recreational opportunities. The rafters and kayakers . - <br /> have had a good season with the near average flows. The U.S. "° <br /> Fish and Wildlife Service in coordination with the Bureau of �/// <br /> Reclamation and the Colorado Water Conservation Board have i : <br /> released from Ruedi Reservoir from August 13 to September + r, , <br /> 16 and September 25 to sometime in October. Theywill '° <br /> likely release 10,000 to 20,000 AF of water to supplement I „ !/://f//: <br /> flows in the Grand Valley Reach of the Colorado River to • .-\\\. <br /> � s <br /> improve conditions for endangered fish during low-flow s 4* <br /> ._///\\/ <br /> periods. These releases have caused some protests from <br /> recreational users on Ruedi Reservoir and the Fryingpan River //\\ <br /> who question the validity and necessity of the releases. o �//\\\/,).-\\ <br /> Ov".k+YR.I" gndl t+l 1114.s leek <br /> ® *we.etas pntons ® 2/74r111 CMltems <br /> . 7 <br />