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ARKANSAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 2.8 indicates that for August the ARKANSAS RIVER BASIN <br /> Sur*"'Water S,K,ply Inds<"'story <br /> basin water supplies were above normal. Storage in <br /> 5 <br /> Turquoise, Twin Lakes, Pueblo, and John Martin reservoirs 4_ <br /> totaled 258% of normal as of the end of August. Flow at the ' • <br /> gaging station Arkansas River near Portland averaged 2,024 -T <br /> cfs, as compared to the 1965-1993 August average of 1,008 y <br /> cfs. The National Weather Service reports basin precipitation • —at 75% of normal duringthe month. G-ELL— �Y f- t <br /> -1 <br /> Outlook <br /> a -2— ' <br /> Stream flows should continue to remain somewhat ' -- <br /> above average through the rest of the irrigation season as base 3- <br /> flow has been charged by the large amount of runoff and -4 I <br /> JAN86 JAN87 JAN88 JAN89 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 <br /> subsequent ground water inflows this summer. Reservoir anNTH/YEAR <br /> supplies continue to be excellent as high river flows have <br /> minimized reservoir release demands. Any reservoir <br /> drawdowns should be replaced this coming winter season <br /> allowing the 1996 irrigation season to begin with nearly full <br /> storage conditions. ARKANSAS RIVER NR, PORTLAND <br /> FLOW BY WATER YEAR <br /> Administrative/Management Concerns 11.9 <br /> Ground water pumping has been greatly reduced this e.8 <br /> season as supplemental supplies were generally not needed. <br /> Matching depletions with appropriate augmentation in 0.6 <br /> amount and time continues to be a concern however. New o 0 .5 <br /> rules & regulations for the use of ground water in the basin .4 <br /> are anticipated to be filed with the Water Court this month. • <br /> These rules will probably be more strict in regards to °3 <br /> replacement obligations both in amount and time. °2 <br /> 0.1 <br /> Public Use Impacts <br /> Oct Nov Dec Jan Feb March April May June July Aug Sept <br /> Although there have been unusually abundant water MONTH <br /> O WET(1984) O ORY(1977) p AVG X 1995 <br /> supplies this year, most crops appear to be behind normal <br /> growth schedules due to the cool wet spring weather. Also, <br /> there was some significant hail damage to crops in Pueblo <br /> County during August. <br /> REPRESENTATIVE RESERVOIRS <br /> ARKANSAS RIVER BASIN <br /> 320 <br /> 300— <br /> 280— <br /> 260— <br /> 220- \ <br /> Z 200- <br /> i 200- \ \ <br /> ° \ \ <br /> 180— <br /> 140 \ <br /> tl� - \ <br /> 120- \ <br /> e 120— /BO <br /> / <br /> 40 <br /> a <br /> John Martin Pueblo Turquoise Twin Lakes <br /> ® Avg. 8/31 Contents 1\V 8/31/95 Contents <br /> 4 <br />