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• <br /> ARKANSAS BASIN July, 1997 <br /> 41 <br /> •Basinwide Conditions Assessment: <br /> The SWSI value of 3.6 indicates that for June the ARKANSAS RIVER BA S I N <br /> basin water supplies were above normal. Flow at the gaging 5 5"'"'Wiser Supply Index History <br /> station Arkansas River near Portland averaged 3,982 cfs, as 4- <br /> compared to the long term average of 2,362 cfs. Storage in .'. <br /> w 3- <br /> Turquoise, Twin Lakes, Pueblo, and John Martin reservoirs I: •-� <br /> totaled 187% of normal as of the end of June. 2- i _ <br /> The Arkansas River had two distinct peaks this runoff •Y '- ' ; <br /> season. On June 4 the river peaked at 4,440 cfs, then 1 0 4iti �)r ,, Vill.k <br /> dropped back to the 3,500 cfs range before slowly peaking _, <br /> again on June 21 to 4,590 cfs. A day or two either way of _ -- i 'J <br /> June 21 is historically a very typical time for the river to peak. 2 = <br /> The most junior call achieved during the runoff was 3- <br /> John Martin Reservoir's 1948 storage call. Approximately -4 i -..- -- , .� <br /> JAN88 JAN89 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 JAN97 <br /> 93,000 af of water was stored in John Martin this season and An11TW7EAP <br /> it came within 20,000 af of physically spilling before demands <br /> for releases by Kansas and a declining river prevented a spill. <br /> The call on the Arkansas during the first week of July is <br /> March 1, 1887,with various reservoir releases supplementing . <br /> the native flow to meet crop and municipal demands during ARKANSAS RIVER NR. PORTLAND <br /> the currently hot and dry weather. 1 FLOW BY WATER YEAR <br /> 0.9 <br /> Administrative/Manazement Concerns <br /> Augmentation of tributary wells not on the Arkansas 1 0.7 <br /> River mainstem or Fountain Creek(the"White"area under the : 0.6 <br /> amended well use rules) is the current area of concentrated o 0 0.5 _ --------4 <br /> efforts by basin administrators. Augmentation in these areas . 0 4 <br /> is often difficult due to the lack of suitable local replacement s <br /> supplies. Enforcement of the rules in these areas for the 1997 I 0.3 <br /> irrigation season is mainly limited to the components of the 0.2 „f.� r <br /> measurement rules which require either some type of <br /> measurement ability for each well or a declaration that the 0 <br /> Oct Nov D•c J•n Feb larch April Limy June July Aug S•pt <br /> well is inactive. Enforcement of the well use rules in these WORTH <br /> O WET cm.) O oRy c1877) p AVG X 1997 <br /> areas, which requires actual augmentation of stream <br /> depletions, will become more complete in 1998. <br /> Augmentation and administration of wells along the mainstem <br /> and Fountain Creek continues to proceed fairly smoothly. <br /> REPRESENTATIVE RESERVOIRS <br /> Public Use Impacts 340 ARKANSAS FIVER BASIN <br /> 320- <br /> All major reservoirs continue to have relatively high 300- <br /> content levels which are producing good boating 230- <br /> 240- <br /> opportunities. ; 240- <br /> 220- <br /> 200- <br /> ' <br /> • 180- <br /> ▪£ 160- X <br /> i 14D- f <br /> • 120- <br /> 11 f <br /> 100- � \ <br /> 3so ,f /� <br /> 40 / \ <br /> 20 I <br /> John Abrtln Pueblo Turquoise Twin Lakes <br /> ® Avp. el30 Cont•nto ® 6/30/07 Contents <br /> A <br />