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I SOUTH PLATTE BASIN Jan-00 <br />, Basinwide Conditions Assessment <br />The SWSI value of 0.9 indicates that for December <br />the basin water supplies were near normal. Reservoir <br />storage, the major component in this basin in computing the <br />SWSI value, was 108% of normal as of the end of <br />December. The Natural Resources Conservation Service <br />reports that January 1 snowpack is 64% of normal. Flow at <br />the gaging station South Platte River at Kersey was 1,010 <br />cfs, as compared to the long-term average of 857 cfs. <br />Although snowpack is significantly below average <br />throughout the basin, the supply conditions remain good due <br />to present storage and flow conditions. <br />Stream ffow conditions continue to be average or <br />above average for most of the South Platte basin. <br />Reservoir storage continued as the primary <br />diversion in December, along with diversions for municipal <br />and recharge uses. Many reservoirs have already been <br />filled to their winter storage levels. <br />Outlook <br />It appears that most reservoirs which have not filled, <br />both on the mainstem and on the tributaries, will fill this <br />winter and spring. <br />Administrative/Manaaement Concerns <br />Due to the excellent storage and flow conditions, <br />there was no call for water downstream of Chatfield <br />Reservoir during December. <br />REPRESE11TATNEF3ESERUDIRS <br />M <br />w <br />m <br />m <br />rn <br />m <br />0 <br />? tC0,00D <br />n <br />D <br />I 50•000 <br />0 <br />Lllim <br />S • <br />..? _ .... .? . <br />Horsetooth Eleven Mle Cheesrrnn Jar16m Barr lake <br />9 Avg. 12/31 Cmtents 012/31/99 Conlents <br />3