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ARKANSAS BASIN <br /> • <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 2.8 indicates that for June the ARKANSAS RIVER BASIN <br /> basin water supplies were above normal. Flow at the gaging s Surface water Supply index l4lptory <br /> - <br /> station Arkansas River near Portland averaged 2,743 cfs, as ,_ <br /> compared to the long term average of 2,362 cfs. Storage in _ 77 <br /> Turquoise, Twin Lakes, Pueblo, and John Martin reservoirs 3 <br /> totaled 183% of normal as of the end of June. <br /> ,j - <br /> Outlook F <br /> Dry conditions continue to exist on many tributary _ N 't <br /> areas in the basin with only the most senior rights being able f <br /> c -2 <br /> to divert any water on many creeks. However, snowmelt <br /> volume in the mainstem headwaters area has been somewhat 3" <br /> above average with the runoff peak being quite flat. This, -4 .................... ...................... <br /> JAN67 JAN86 JAN69 JAN90 JAN91 JAN92 JAN93 JAN94 JANBS JANOS <br /> combined with mostly untapped storage supplies, should ApNTWYEAR <br /> insure mainstem irrigators adequate water supplies <br /> throughout this season. <br /> Administrative/Management Concerns <br /> Dealing with several conflicts between water users ARKANSAS RIVER NR. PORTLAND <br /> involving the administration of very limited water supplies on q FLOW BY WATER YEAR <br /> dry tributaries has consumed much personnel time during <br /> June. It is expected that conflicts will begin to recede as 0_6 <br /> solutions are found and the reality sets in that in some <br /> drainages there is not enough water for all of the most senior <br /> 06 <br /> rights which have usually always had adequate supplies. a °_s <br /> LL- <br /> 0 4 <br /> Public Use Impacts <br /> The Arkansas River had native flows ranging from °.3 <br /> 3,700 cfs in early June to 1,500 cfs at the end of the month. 0 2 - e <br /> These flows were ideal for the rafting industry but conditions <br /> were poor for river fishing. - _. <br /> Oct Nov Dec Jan fob MorCh Apr I May June July Aug Sept <br /> Reservoir boaters continue to enjoy full reservoir t 014 <br /> conditions on virtually all reservoirs in the basin. Native flows ° "E``'9"' °R �1977) A x 1996 <br /> have been able to essentially satisfy irrigation demands thus <br /> far, so the expected reservoir drawdowns have not yet <br /> occurred this irrigation season. <br /> REPRESENTATIVE RESERVOIRS <br /> ARKANSAS RIVER BASIN <br /> 260 <br /> 240- <br /> zzn- \ \" <br /> 200- <br /> M \ \ <br /> 160- \ \ <br /> i 160 \ \ <br /> 140- \ \ <br /> bII <br /> i 120— \ \ <br /> 100 <br /> i Bo�/ \ <br /> 60 / <br /> 40 7\7\ / <br /> ./\ <br /> 20° A\. \ <br /> John Martin Pueblo TurquOlq Twln Lakes <br /> ® Acg.6/30 Contents ® 6/00/96 Content* <br /> 4 <br />