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COLORADO BASIN <br /> 6 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +1.9 indicates that for June the COLORADO RIVER BASIN <br /> basin water supplies were above normal. Storage in Green 5 _ surfs=. _-� sly indax Nlctay <br /> Mountain, Ruedi, and Williams Fork reservoirs totaled 109% , <br /> of normal on June 30. Flow at the gaging station, Colorado 1 <br /> w 3 p <br /> River near Dotsero, averaged 8,114 cfs as compared to the ;'"' ; . <br /> 1961-1991 June average of 5,704 cfs. 2- <br /> 1 7 <br /> Outlook o '11/F _n <br /> The weather in June proved to be ideal for melting - - B <br /> the snowpack without extremely high flows or flooding. The <br /> peak on May 28 held true for most rivers, although they came 0 <br /> back strong several times in June. There is still a lot of high 3- <br /> snow left, and the flows in July and August will be higher -4 . ... ...•..... <br /> JAN84 JAN85 JAN86 JAN67 JAN69 JANB9 JAN90 JAN91 JAN92 JAN93 <br /> than normal. MONTN/YEAR <br /> Administrative/Management Concerns <br /> The river calls are expected sometime in August. <br /> Some reservoirs such as Rifle Gap and Dillon have been full <br /> and spilled most of June. Others like Williams Fork, Ruedi, COLORADO RIVER NR. DOTSERO <br /> Green Mountain and Willow Creek are almost full and should 3 FLOW BY WATER YEAR <br /> fill during July. On the Grand Mesa,where the snowpack was <br /> 2 B <br /> highest, there were very few problems involving safety of 2.6 <br /> dams or their spillways and all of the reservoirs filled. Since 2 2 <br /> there is abundant water supplies, very few creeks have had a b 2 <br /> call so far, but as the runoff dwindles, more rights will be 1 B <br /> s_ 1 6 <br /> called out. ,, <br /> _>V <br /> 1.2 <br /> Public Use Impacts g D <br /> It has been a banner year for recreational use of the 0 6 ��•- r. <br /> streams, rivers, and reservoirs and this should continue o.2 <br /> throughout the summer season. The high flows have caused <br /> Oct Nov Doc Jan Fop March April May Juno July Aug Sept <br /> some minor erosion damage in May and June, but it has not MONTH <br /> 0 WET(1904) o DRY(1977) p AVG X 1993 <br /> been extensive. <br /> REPRESENTATIVE RESERVOIRS <br /> COLORADO RIVER BASIN <br /> 140 <br /> 130— <br /> 120 / <br /> 110— <br /> a 100 <br /> 90 v <br /> b BO <br /> D F 5D- j <br /> u A0- <br /> 30 <br /> 20 <br /> 10 <br /> [roan Mountain Rued I W I I!hum Fork <br /> ILL Avg- 6/30 Cpntanta I\v 6/30/93 Contonto <br /> 7 <br />