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• SOUTH PLATTE BASIN <br /> Basinwide Conditions Assessment <br /> The SWSI value of+1.8 remains basically unchanged SURFACE WATER SUPPLY INDEX <br /> from the previous month and indicates that the current ! '' ""lint'Rim.eosin <br /> conditions are above normal. Reservoir storage is the key , <br /> component in this basin in computing the SWSI value. <br /> r l II 1111111: III II It I. <br /> Reservoir storage is approximately 40% above normal. • Ill mop, 11 111 11 I Il <br /> e� normal 7 6 11II Illillll III IIII! III litre <br /> Precipitation was 126% of for the month of October. II 1111 1111i11; III IIIIII ,I III r IIIHII 1 , II <br /> ,Y _��; II' llll 1111111' 1,1111 UIIII Illrlll IIIIIIIII III III <br /> The use of water for irrigation dropped significantly going T _ 11 111 i1111 1111111' 1111111 111111 1111111 111111111 1 Ili 1 ,i1; <br /> III) III 11111, 1111111: 1111111 111111 1111111 111111/11 1.11111 1111 <br /> into October. The major diversions of water are now going Il l lr, l I I I' I I I IH I II H i I 1111111 111111 1l f l l u 111111111,111111111 111111111: 1111 <br /> � . nnn i rrlrt� nrn lrrn nnnl In+n nirn; +nrnnl nrrinl nln, <br /> into storage structures. Some ground water recharge projects <br /> are beginning to divert water also. Flow at the key gaging <br /> station, South Platte River near Kersey, averaged 736 cfs for 4 <br /> the month of October as compared to the historic monthly <br /> flow of 853 cfs. Dillon Reservoir is currently storing about <br /> 255,000 acre-feet of usable water. Soft moisture is classified ' ' .1003 <br /> ''"'" `""` `""" `'""' Jamul """' '"'"° <br /> as being above normal. <br /> Outlook: <br /> The 30-90 day outlook is favorable. Early snowpack <br /> has developed in the upper reaches of the basin. The <br /> scenario for water supply and demand appears to be SOUTH PLATTE RIVER NR. KERSEY <br /> normal to above normal. Municipal water supplies from the .. <br /> upper South Platte basin will be short. Flows in the South <br /> Platte River above Denver will likely remain low. Flows in �f <br /> the South Platte River below Denver are dropping as 3 r <br /> irrigation return flows diminish. Some reaches of the South j <br /> Platte River in the Denver metro area may reach low levels I" <br /> in the next two months resulting in poor water quality and ; 30 <br /> increased treatment costs. <br /> Administrative/Management Concerns: <br /> River calls continue on the South Platte and its <br /> tributaries. Calling rightsswitch from direct flow <br /> generally <br /> uses to storage. The interstate compact with Nebraska "'1' "" <br /> adjusts on October 15 basically giving Colorado full use of <br /> available streamflow. Storage has begun in District 64 i.e., <br /> the lower reach of the South Platte basin in Colorado. <br /> Public Use Impacts: <br /> Public water use should be relatively normal. Cherry South Platte Basin Reservoir Supp I i es <br /> Creek Reservoir will continue to lower due to evaporation :.. <br /> losses. - <br /> 7 <br /> 2 me <br /> I .):A <br /> -A <br /> OH I1 1 IRR R VIM;w le G161011111 d111alWl T LEN <br /> eZ R.,r7+d+leSRs ® minim oNIbi*s <br /> • <br /> • <br /> 3 <br />