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<br />SOUTH PLATTE BASIN <br /> <br />Basinwide Conditions Assessment <br />The SWSI value for the month was 0.1. Cumulative <br />storage for the six reservoirs graphed on this page was <br />113% of normal as of the end of December. Cumulative <br />storage in the major plains reservoirs: Julesberg, North <br />Sterling, and Prewitt, is at 71 % of capacity. Cumulative <br />storage in the major upper-basin reservoirs: Cheesman, <br />Eleven Mile, Spinney, and Antero is at 90% of capacity. The <br />Natural Resources Conservation Service reports that <br />January 1 snowpack is 94% of normal. Flow at the gaging <br />station South Platte River near Kersey was 571 cfs, as <br />compared to the long-term average of 683 cfs. Flow at the <br />Colorado/Nebraska state line averaged 155 cfs. <br /> <br />Outlook <br />The main diversions in the South Platte basin <br />continued for storage and to a lesser extent municipal use. <br />During the first half of the month, the call on most of the river <br />was for storage as there was not enough supply to meet all <br />the flow rate storage demands. With colder conditions the <br />latter half of the month, storage was restricted due to icing <br />conditions. At that point, the call on the South Platte River <br />was removed as users could no longer take all on the <br />supply. This allowed for limited recharge to occur. <br />However, even this usage was restricted due to the cold <br />conditions. Nevertheless, irrigation and municipal storage <br />conditions continue to be improved over last year at this <br />time. The present flow and storage conditions give hope <br />that all major irrigation reservoirs on the plains will fill this <br />spring. This will provide a good start to the 2008 irrigation <br />season. Municipal suppliers are also optimistic that there <br />will not be shortages this coming summer as storage <br />conditions are in good shape. As always is the case, supply <br />conditions for next year will be dramatically dependent on <br />late winter and early spring mountain snow fall and spring <br />rainfall conditions on the plains. <br /> <br />Jan-08 <br /> <br />SOJTH Pl.ATlE I?ASIN S/lS HSTCRY <br /> <br /> <br />>- <br />w <br />'" <br /> <br />w <br />:3 <br />"' <br />5 0 <br />o <br />;:: <br />>-.1 <br />'" <br />o <br /> <br />Jm-99 Jan-OO Jan-01 Jm-02 Jan-03 Jan-04 Jm-05 Jan-03 Jm-07 Jan-OO <br />M:N1H/\S'R <br /> <br />SOUfH PLATTE RIVER NR KERSEY, FLOW BY WATER YEAR <br /> <br />450, CXXJ <br /> <br /> <br />4OJ, CXXJ <br /> <br />Q) <br />tf 350, CXXJ <br />'" <br />~ 2m, CXXJ <br />5 <br />9 250, CXXJ <br />LL <br />~ 20), CXXJ <br />>= <br /><{ <br />5 15O,CXXJ <br />::;; <br />G 100,CXXJ <br /> <br />50, CXXJ <br /> <br />o <br />ill <br /> <br />NCN <br /> <br />cec <br /> <br />Jan <br /> <br />Feb <br /> <br />M3rch <br /> <br />--8-- V\ET (1983) <br /> <br />-+- DRY (1004) <br /> <br />~AVG <br /> <br />""* 2008 <br /> <br />REPRESENTATIVE RESERVOIRS <br /> <br />3OO.00J <br /> <br />25Q,00J <br /> <br /> <br />Q) <br />~20000J <br />'" ' <br />" <br />ro <br />ai <br />g'150,CXXI <br />o <br />Ii) <br />Q) <br />:0 <br />rn 1oo,OOJ <br />::J <br /> <br />SO.OOJ <br /> <br />DIIon Horsetooth Eleven Mle Cheesman Jackson Barr Lake <br /> <br />III Avg. 12/31 Contents <br /> <br />11I12/31/07 Contents <br /> <br />3 <br />