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<br />SOUTH PLATTE BASIN <br /> <br />Basinwide Conditions Assessment <br />The SWSI value for the month was 0.5. Cumulative <br />storage for the six reservoirs graphed on this page was <br />1140/0 of normal as of the end of January. Cumulative <br />storage in the major plains reservoirs: Julesberg, North <br />Sterling, and Prewitt, is at 750/0 of capacity. Cumulative <br />storage in the major upper-basin reservoirs: Cheesman, <br />Eleven Mile, Spinney, and Antero is at 920/0 of capacity. The <br />Natural Resources Conservation Service reports that <br />February 1 snowpack is 970/0 of normal. Flow at the gaging <br />station South Platte River near Kersey was 589 cfs, as <br />compared to the long-term average of 654 cfs. Flow at the <br />Colorado/Nebraska state line averaged 323 cfs. <br />The main diversions in the South Platte continued to <br />be for reservoir storage with lesser amounts for municipal <br />purposes. Like December, colder conditions during part of <br />the month limited storage due to icing conditions. Thus, <br />there was no call on the river during a portion of the month <br />allowing for limited recharge. However, even this usage <br />was restricted due to the cold conditions. <br />Storage conditions basin wide continue to be <br />improved over last year with expectations that most major <br />municipal and irrigation reservoirs will fill this year. The one <br />exception to this is the Poudre basin where a very good <br />spring runoff will be necessary to come even close to filling <br />all the major reservoirs. <br /> <br />Outlook <br />As always is the case, supply conditions for next <br />year will be dramatically dependent on late winter and early <br />spring mountain snow fall and spring rainfall conditions on <br />the plains. <br /> <br />Feb-08 <br /> <br />SOUTl-1 PLATTE BASIN SNSI HISTORY <br /> <br />I- <br />W <br />S 1 <br /> <br /> <br />W <br />::J <br /><i <br />> 0 <br />i <br /> <br />>- -1 <br />is <br /> <br />-4 <br />Jal1-gg Jal1-00 Jal1-01 Jal1-02 Jal1-03 Jal1-04 Jal1-05 Jal1-00 Jan-D7 JaI1-08 <br /> <br />rvDNTH / YEAR <br /> <br />SOJTH PLAnE RIVER NR KERSEY, FLOW BY WATER YEAR <br /> <br />450,000 <br /> <br /> <br />400,000 <br /> <br />Q3 <br />~ 350,000 <br />cb <br />~ 300,000 <br />S~ <br />g 250,000 <br />LL <br />~ 200,000 <br />i= <br />~ 150,000 <br />~ <br />B 100,000 <br /> <br />50,000 <br /> <br />o <br />O:i <br /> <br />Nov <br /> <br />Dee <br /> <br />Jan <br /> <br />Feb <br /> <br />rvlarch <br /> <br />-----8-- WET (1983) <br /> <br />~ DRY (1964) <br /> <br />---fr-- A VG <br /> <br />-*2008 <br /> <br />REPRESENTATIVE RESERVOI RS <br /> <br />300,000 <br /> <br /> <br />250,000 <br /> <br />Q3 <br />~ 200,000 <br />Q) <br />U <br />co <br />ai <br />~ 150,000 <br />o <br />U5 <br />Q) <br />~ 100,000 <br />:J <br /> <br />50,000 <br /> <br />Dillon Horsetooth Eleven Mle Cheesman Jackson Barr Lake <br /> <br />III!I Avg. 1/31 Contents <br /> <br />m11 /31 /08 Contents <br /> <br />3 <br />