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SOUTH PLATTE BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +1.4 indicates that for May the SOUTH PLATTE RIVER BASIN <br /> basin water supplies were above normal, which may be an 9iti'Water Supply no..""tort' <br /> S <br /> optimistically high rating. The National Weather Service 4 <br /> reports May precipitation at 52% of average. The Soil • �' F •� <br /> Conservation Service reports snowpack on June 1 at 16% of -J."'... - <br /> average. Reservoir storage, the key component in this basin -a 1 MI 1 - <br /> in computing the SWSI value,was 98%of average on June 1. � �, <br /> P . <br /> Storage in the major plains reservoirs, Julesburg, North r'' - <br /> - <br /> Sterling, and Prewitt, decreased by 14,402 acre-feet during <br /> May and is at 85% of capacity. Storage in the major upper <br /> -2- <br /> basin reservoirs,Cheesman,Eleven Mile,Spinney,and Antero, <br /> decreased by 3786 acre-feet and is also at 85% of capacity. 3" <br /> Flow at the gaging station, South Platte River near Kersey, -4 .. <br /> JAN63 4AN64 JAN65 JAN66 JAN87 JAN64 JANOS JANGO JAN81 JAN82 <br /> averaged 479 cfs for the month as compared to the 1961-1991 MONTW <br /> May average of 2379 cfs. Flow at the Colorado/Nebraska <br /> stateline averaged 51 cfs for the month. <br /> Administrative/Management Concerns <br /> The season so far has been hot and dry. Reservoirs SOUTH PLATTE RIVER NR. KERSEY <br /> are well into their season of heavy use. The earliest senior 2.8 • FLOW WATER YEAR, <br /> call in effect for May was the Farmers Independent (11-20- 2.8 <br /> 1876) placed in District 2. 2.4 <br /> 2.2 <br /> Miv 1.2 <br /> • <br /> 0.0 - r <br /> 0.4 <br /> 0.2 <br /> 0 <br /> Oct PAN Cit Jan Feb larch April Way June July Aup Sept <br /> N°Ni" <br /> 0 .0T C1S03) + Oar[1E84) a AVG. a 1002 <br /> REPRESENTATIVE RESERVOIRS <br /> BOUT"PLATTE RIVER 9A81N <br /> 240 <br /> 210'y'�-\\' <br /> 220 <br /> 200 J �\\ <br /> J <br /> i 1G0✓A <br /> .1 140A <br /> • <br /> -A <br /> 2° // // 70 7/ <br /> OIIIon Norese0Wth Eleven kills Chasm. Jecreon Garr Laic. <br /> ® Avg. ..3,Content. ® SI31/G2 Contents <br /> 3 <br />