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• <br /> ARKANSAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +0.9 indicates that the current SURFACE WATER SUPPLY INDEX <br /> conditions are near normal. This is the result of s Arinn...River 9aeln <br /> significantly above average precipitation recorded for the 4_ <br /> month of July. Pueblo received 5.14 inches of rain for the tv 3_ e <br /> month compared to the July average of 1.81 inches. - : <br /> Resultant high flows in the low Arkansas River allowed for 2- <br /> John Martin Reservoir to go into storage under its 1948 s <br /> priority from July 21 through July 26. During this same 0 1(jiri'q <br /> period Trinidad Reservoir was able to store under its 1908 _ tl <br /> transferred Model right. Cumulative flow at the key index <br /> a -4- <br /> gaging station, Arkansas River near Portland, remains 30% - - :r <br /> below average for the water year. This is above the record -3- <br /> low flow recorded in 1977, partially due to reservoir -4 <br /> JANl1 alga JANO3 JAN14 .JAMS JANOS JANd7 JANae JAN29 JAM° ..IANI, <br /> releases from Twin Lakes Reservoir. MC„T„„1101 <br /> Outlook: <br /> Reduced irrigation demands will likely continue <br /> through August and as a result will lessen the impact on <br /> storage at John Martin and Pueblo Reservoirs. Pueblo ARKANSAS RIVER NA. PORTLAND <br /> Reservoir drawdown for July was 5.5 feet rather than the 1 - FLOW BY MTER YEAR <br /> expected 7.0 feet. The Bureau of Reclamation has revised 5.5 <br /> its projection of end of irrigation season storage in Pueblo <br /> Reservoir downward from 88,000 to 67,000 acre feet. j 0.7 <br /> A <br /> kg, " <br /> Administrative/Management Concerns: •1 °.s <br /> The Bureau of Reclamation has indicated it will <br /> continue to supplement native flows to a minimum flow of <br /> °' <br /> 700 cfs in upper reaches of the Arkansas River through I 0.3 <br /> August 15, 1990. 0.2 <br /> 0.1 <br /> Public Use Impacts: 0 <br /> OCt /Qv Dac Jen Feb wlron AprII May .Rent duly Aug Sept <br /> The Colorado Division of Wildlife transferred 1300 101311TN <br /> acre feet of water from Pueblo Reservoir to John Martin 0 <br /> MAX"28" + MIN"977) ° AVG a 1990 <br /> Reservoir to supplement the permanent reservoir pool. <br /> Additional water may be transferred in August. <br /> Arkansas Basin Reservoir Supplies <br /> 130 <br /> 1110- •� <br /> 1+0-a00 / <br /> ,° r <br /> 23DOZ\/\\ <br /> Jdm Marten Puebla Turquoise Twin Laicaa <br /> ® Avg. 7/31 Contents ® 7i3V90 Contents <br /> 4 <br />