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COLORADO BASIN April, 1998 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of-0.5 indicates that for March the COLORADO RIVER BASIN <br /> basin water supplies were near normal. The Natural -Surface WALK Supply Hulot History <br /> s <br /> Resources Conservation Service reports April 1 snowpack as 4_ <br /> 89% of normal. Flow at the gaging station Colorado River - C <br /> near Dotsero averaged 1,552 cfs as compared to the long term u. 3 r - r <br /> average of 1,088 cfs. Storage in Green Mountain,Ruedi, and 2 <br /> -. -(A 1 a ::, <br /> Williams Fork reservoirs totaled 118%of normal as of the end 1 i- ;, <br /> of March. `' -" `" <br /> Outlook ,, <br /> The NRCS predicts below average flows for the a 2 _ / ` =a, <br /> Colorado main stem and its major tributaries during spring -3" <br /> runoff from April to July. The lone exception is Plateau Creek, - - - - <br /> JANBO JANOO JANO1 JANB2 JAN93 JANO4 JANOS JANOS JAN07 JAMS <br /> a drainage off of the Grand Mesa, which is forecast to be MONTH/YE•R <br /> above average. Reservoir storage is anticipated to be above <br /> average. <br /> Administrative/Manag_ement Concerns <br /> Major canals in the lower end of the basin, the COLORADO RIVER NA. DOTSERO <br /> Government Highline, Orchard Mesa, and Grand Valley, 700 FLOW BY WATER YEAR <br /> started running irrigation water in early April while a handful <br /> of large junior irrigators in the headwaters region are taking `°° " <br /> advantage of early runoff. 1 300 /. <br /> Public Use Impacts .1 400 <br /> Rafting replaces skiing as spring advances. 'i 3� <br /> V <br /> 6666 1 200 <br /> 100 <br /> a <br /> Oct Nov Oat Jan Fab March ►prll <br /> MONTH <br /> 0 WET Clam) O ORy(1077) A AVG X 11aa <br /> REPRESENTATIVE RESERVOIRS <br /> SO COLORAOO RIVER BASIN <br /> 70- <br /> 30 V <br /> hi 4n.."\\\ <br /> ! 3°:./. <br /> in <br /> 3 20.A. /\ <br /> 10 <br /> Green Mountain Ru.OI 111114IFa Fork <br /> ® Avg. 3131 Content* ® 3,31/SB Contents <br /> 7 <br />