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SOUTH PLATTE BASIN November, 1998 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 3.2 indicates that for October the SOUTH PLATTE RIVER BASIN <br /> Surface"`tom <br /> >asin water supplies were above normal. Reservoir storage, Supply Index""`°rY <br /> s <br /> the major component in this basin in computing the SWSI , <br /> value,was 107%of normal as of the end of October. Storage F I , 1 1 1 I <br /> W 3 I, III 111,1 1,•.III I.I <br /> in the major plains reservoirs: Julesburg, North Sterling, and 1 II II 11111.11 II ,1 <br /> z li I III II III II1111111 IHIIIII IIII <br /> Prewitt, increased by4 061 acre-feet duringOctober and are 11 I 11 II, 1, 11 1111. III I:1111111 11111111 111111111 <br /> I IIII III 1111 1111 1111.1111 Ili III 111111111 11111111 111111111 <br /> 1 111,1 1111 1111, 11111 1.1111 1 I;1 III III 1111111111 11111111 111111111 <br /> at 31% of capacity. Storage in the major upper basin i 1 I„II1J. MI UM HMI IR11111II I W III 111111111111111111 AIIIIIII <br /> reservoirs: Cheesman, Eleven Mile, Spinney, and Antero, g 1111111111 11111 1111111' 11111111 111111111 11 111 11 1 III 111111111'•11111111 111111111 <br /> (IIIIIIIII 111111 IIIIII Ili{IIII. IIIIIIII I II I .II! 11 III 111111111 11111111 IIIIIIIII <br /> decreased by 9,176 acre-feet and are at 83%of capacity. The 1°;i 1 I IIII I I <br /> I <br /> mean daily flow of the South Platte River at the Kersey gage I <br /> was 863 cfs,as compared to the long term average of 861 cfs. <br /> Flow at the Colorado/Nebraska state line averaged 914 cfs. -3 <br /> The irrigation season was completed in October. As -4 <br /> JAMS JAN90 JAN91 JA192 JAN93 JAN94 JAMS JAN96 J097 JAMS <br /> in many years, supply was adequate throughout the South M°MIWYFJR <br /> Platte basin downstream of Denver in October to meet <br /> demand. This year, like last year, turned out to be a very <br /> good water year in the basin as far as water supply for <br /> irrigation and municipal use was concerned. <br /> ARKANSAS RIVER NR. PORTLAND <br /> Outlook 150 FLAY BY MAC YEAR <br /> With the end of the irrigation season diversions will 140 <br /> be primarily for storage, recharge, and municipal purposes. 1 <br /> 30 <br /> 120 <br /> Significant recharge has already occurred this fall along the 11° - <br /> South Platte due to the good flow conditions. , 1013 <br /> Reservoir levels on both the mainstem and tributaries are in excellent shape and it is anticipated that there will be V g <br /> no difficulty in filling reservoirs. [ '° <br /> Administrative/Manazement Concerns .° <br /> There was no mainstem call the whole month of .� <br /> October below Chatfield Reservoir. <br /> OR taw Osc Jan Feb Msreh <br /> NOlR1F <br /> 0 WET C11.043 0 ORY C1977) A AVG % 1199 <br /> Representative Reservoirs <br /> South Platte Slyer Beam <br /> 260 <br /> 240 <br /> 220 <br /> 180 <br /> 193 • <br /> ui 140 • <br /> 9• <br /> v 1� <br /> 3 <br /> 60 <br /> 40 <br /> 7/\\IN <br /> W " <br /> 111Ion Mere•tnoth Eleven Mr I. Ch••sasn Jackson Barr Lake <br /> ® Avg. 10/31 Contents ® 10/31/90 Contents <br /> • <br /> 3 <br />