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• <br /> SOUTH PLATTE BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +1.3 indicates that for July the SOUTH PLATTE RIVER BASIN <br /> S <br /> )asin water supplies were above normal. Reservoir storage, 9AW t�Supply IndexHistory <br /> 5 <br /> the key component in this basin in computing the SWSI value, 4_ <br /> was 99% of normal on July 31. Storage in the major plains - t , <br /> 3 <br /> reservoirs, Julesburg, North Sterling, and Prewitt, decreased "" ; <br /> by 44,035 acre-feet during July and are at 60% of capacity. 2- - ? <br /> Storage in the major upper basin reservoirs,Cheesman,Eleven 1 <br /> Mile, Spinney, and Antero, increased by 5,090 acre-feet and g G �,�iiw _. <br /> are at 94% of capacity. The mean daily flow at the Kersey _ <br /> gage on the South Platte River was 493 cfs, as compared to - <br /> a -2- <br /> the 1961-1991 July average of 860 cfs. Flow at the <br /> Colorado/Nebraska state line averaged 50 cfs for the month. 3- <br /> -4 , <br /> JANB4 JANBS JAN86 JAN87 JAN88 JAN89 JAN90 JAN91 JAN92 JAN93 <br /> AUNT W YEAR <br /> SOUTH PLATTE RIVER NR. KERSEY <br /> FLOW BY WATER YEAR <br /> 2 8 <br /> 2.4 <br /> 2.4 <br /> 2.2 <br /> 2 <br /> 1.8 <br /> 1.6 <br /> _ 1.4 <br /> W 1.2 <br /> 1 V <br /> I 0 <br /> 0.6 <br /> 0 4 <br /> Oct Nov Dec Jan Feb March April May June July Aug Sept <br /> AUHTH <br /> !7 WET(19E3) O DRY(1964) A AVG V 1993 <br /> REPRESENTATIVE RESERVOIRS <br /> SOUTH PLATTE RIVER BASIN <br /> 260 <br /> 200 J/�\ <br /> 160 J// \`` <br /> ^\\ <br /> F 120 <br /> Dillon Horsetootll Eleven Mlle Cheewnen JeCKwn Barr Lek. <br /> IZLI Avg 7/31 Content■ ® 7/31/93 Contents <br /> 3 <br />