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SOUTH H PLATTE BASIN <br /> Basinwide Conditions Assessment: <br /> SOUTH PLATTE RIVER BASIN <br /> The SWSI value of +0.9 indicates that for February s Surface water Sc oly Index Nietory <br /> the basin water supplies were slightly above normal. <br /> Reservoir storage, the key component in this basin in N -C4" : i <br /> computing the SWSI value, was 105%of normal on February <br /> 28. Storage in the major plains reservoirs, Julesburg, North 2�- �-� ' -- .- • fY -1 •k <br /> Sterling, and Prewitt, increased by 12,905 acre-feet during —� <br /> February and are at 85% of capacity. Storage in the major a - <br /> upper basin reservoirs, Cheesman, Eleven Mile, Spinney, and - ' 4 <br /> Antero, decreased by 2,116 acre-feet and are at 82% of r _ <br /> capacity. The Soil Conservation Service reports February 28 -2 <br /> snowpack at 108% of normal. The mean daily flow at the -3- <br /> Kersey gage on the South Platte River was 875 cfs, as -4 :. • <br /> JAN64 JAN65 JAN98 JANS7 JAN89 JAN69 JAN90 JAN91 JAN92 JAN93 <br /> compared to the 1961-1991 February average of 796 cfs. KWH/YEAR <br /> Flow at the Colorado/Nebraska stateline averaged 1,350 cfs <br /> for the month. <br /> Administrative/Manazement Concerns <br /> The earliest call in effect on the South Platte during SOUTH PLATTE RIVER NR. KERSEY <br /> February was the Cheesman storage call of 6-27-1889 which 450 FLOW OM WATER YEAR <br /> has been in effect since last November. 400 <br /> 350 <br /> ki <br /> 300 <br /> 4 zsD <br /> 200 <br /> 150 � r <br /> 100 <br /> 50 <br /> 0 <br /> Oct Nov Dec Jan Feb Morch <br /> kONTN <br /> 0 WIT(16133 O DRY(1964) A AVG N 1893 <br /> Representative Reservoirs <br /> 220 Seuth PIOLL.Benin <br /> 200-\ \:7 <br /> 160J/ <br /> = 160140 <br /> 120 <br /> � <br /> ao <br /> 0. <br /> Dillon Noreetooth Eleven Nile Cheeeneln Jeckeon Barr Lax. <br /> AnO. 2/26 Content. ® 2/26193 Contents <br /> 3 <br />