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SOUTH PLAflE BASIN 12/1996 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 1.5 indicates that for November the SOUTH PLATTE RIVER BASIN <br /> )asin water supplies were above normal. Reservoir storage, Surface Water Supply ' "l•torr <br /> the major component in this basin in computing the SWSI ,_ <br /> value,was 121%of normal as of the end of October. Storage I. , . :_ <br /> in the major plains reservoirs, Julesburg, North Sterling, and 3 1 :.C. <br /> } Prewitt, increased by 22,583 acre-feet during November and -`-` '�' _ « <br /> are at 64% of capacity. Storage in the major upper basin "` = � '"". " _w <br /> reservoirs, Cheesman, Eleven Mile, Spinney, and Antero, x D . "~'- `e- 1 <br /> increased by 2,293 acre-feet and are at 86% of capacity. The - <br /> mean daily flow of the South Platte River at the Kersey gage T <br /> c -2- <br /> was 990 cfs, as compared to the long term average of 922 cfs. o <br /> Flow at the Colorado/Nebraska state line averaged 60 cfs, -3 <br /> compared to the long term average of 346 cfs. -4 <br /> JA88, JANOS JANB9 JAN90 JAN91 JAN92 JAN93 JAN94 JANOS JAMS <br /> Reservoir storage continued as the primary diversion MONTN/YEAR <br /> in November. Filling was curtailed toward the end of the <br /> month for some main stem plains reservoirs due to weather , <br /> conditions. The Barr Lake storage and Denver storage calls <br /> continued on the main stem of the South Platte River with no <br /> call downstream of the Denver area. SOUTH PLATTE RIVER NR. KERSEY <br /> Reservoir levels continue to be above average for this 4S0 <br /> FLOW BY WATER YEAR <br /> time of year. Likewise, stream flows continue to be above 400 <br /> average. <br /> 350 <br /> Outlook 300 <br /> .----------4/ <br /> November began fairly dry, but snow conditions by o � <br /> I 2 <br /> the end of the month were average or above average g 200 <br /> throughout the basin, which provided a good start to next S 1s. <br /> year's water supply. As is always the case, the overall i <br /> 10° <br /> adequacy of the snow pack will be dependent upon late winter <br /> and early spring snows when the state generally receives the S0 ._._.______' <br /> majority of its precipitation. o l <br /> Oct Nov 0- Jan Feb Parch <br /> Administrative/Management Concerns E`C'9°� O °W(1804) A k 1896 <br /> Recharge on the South Platte continued in November, <br /> including recharge at new sites. New recharge is partially the • <br /> result of efforts by the South Platte Lower River Group Inc., a <br /> group made up of local interests and state representatives. REPRESENTATIVE RESERVOIRS <br /> The South Platte Lower River Group had been formed during 240 South Platte Basin <br /> -the last year to identify and evaluate water resource 220- 7 <br /> management and development opportunities between Balzac 200 <br /> and the state line. Its desire is to secure Colorado's water s 180 <br /> resources under the South Platte Compact and meet existing 180 <br /> A, <br /> - ----//,‘,.., <br /> and future water needs. Funding for the group has been a <br /> ii provided by the Colorado Water Conservation Board and ;g 100� <br /> group members. 1 80 <br /> GO 7 <br /> O <br /> Dillon Nora.tooth Eleven YIl• Ch••snon Jackson Barr Lake <br /> ® Ao. 11/30 Contents ® 11/30/96 Contents <br /> • <br />