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SOUTH PLATTE BASIN <br /> Basinwide Conditions Assessment: <br /> SOUTH PLATTE RIVER BASIN <br /> The SWSI value of +1.2 indicates that for March the 5 Surface Maur Supply Index History <br /> basin water supplies were above normal. Reservoir storage, 4 _ <br /> • <br /> the key component in this basin in computing the SWSI value, J 1j. ▪ , <br /> was 102% of normal on March 31. Storage in the major <br /> plains reservoirs, Julesburg, North Sterling, and Prewitt, 2 • ` r ? ? ` <br /> increased by 8,737 acre-feet during March and are at 92%of 1 -- ---- �` <br /> capacity. Storage in the major upper basin reservoirs, _ o - "' r" �• <br /> Cheesman, Eleven Mile, Spinney, and Antero, increased by -, <br /> 1,241 acre-feet and are at 83% of capacity. The Soil <br /> Conservation Service reports March 31 snowpack at 108% of a -2 <br /> normal. The national Weather Service reports March '3 <br /> precipitation as 88% of normal. The mean daily flow at the -4 <br /> JAN64 JANe5 JAN06 JANe7 JAH66 JANe9 JAN90 JAN91 JAN92 JAN93 <br /> Kersey gage on the South Platte River was 935 cfs, as M71'1TWYEAR <br /> compared to the 1961-1991 March average of 817 cfs. Flow <br /> at the Colorado/Nebraska stateline averaged 1,018 cfs for the <br /> month. <br /> Administrative/Management Concerns SOUTH PLATTE RIVER NR. KERSEY <br /> The earliest call in effect on the South Platte during 450 FLOW Or WATER YEAR <br /> February was the Cheesman storage call of 6-27-1889 which 400 <br /> has been in effect since last November. <br /> eso <br /> 30 <br /> 0 <br /> a0o <br /> {C <br /> C 250 <br /> 00 <br /> TOO <br /> 150 <br /> 100 <br /> 0 <br /> Oct Nov psc Jon Feb Werth <br /> MONTH <br /> 0 •ET(1M, O Owl.C1664] • AVG x 1903 <br /> REPRESENTATIVE RESERVOIRS <br /> SOUTH PLATTE RIVER BASIN <br /> 210 <br /> 170 <br /> 160_....„///\.\\ <br /> 4 120 <br /> 10 <br /> Dillon WbrMtaoth Eleven Mlle Ch.Mmsn J.c#son Barr LAN <br /> ® Avg. 3131 Contents ® 313Nf]Contents <br /> • <br /> 3 <br />