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<br />I <br /> <br />f'.', '1 :" '1 <br />'l.I-"...,y <br /> <br />25 <br /> <br />I <br /> <br />I <br /> <br />historic levels by 100 cfs to maintain a trout fishery flow, an additional <br /> <br />increase of only 400 cfs is necessary to make the 500 cfs increase for <br /> <br />I <br /> <br />endangered fish in Rugust and September. <br /> <br />The maximum total release for <br /> <br />fishery purposes in Rugust and September would be 700 cfs (200 cfs - <br /> <br />I <br /> <br />historic; 100 cfs - trout and endangered fish; 400 cfs - endangered fish). <br /> <br />I <br /> <br />In actual operation releases for endangered fish may not abruptly increase <br /> <br />or decrease by 400 cfs, but will probably respond to more gradual changes <br /> <br />I <br />I <br /> <br />in flow conditions at Westwater during Rugust and September and will only <br /> <br />peak at 400 cfs. <br /> <br />I <br /> <br />The preliminary data on the release requirement for er,dangered fish <br /> <br />does not display the years during the study period in which a 500 cfs <br /> <br />I <br /> <br />release in Rugust and September must be made. Because the disaggregated <br /> <br />data were not available and because of the preliminary nature of these <br /> <br />I <br /> <br />data, it was assumed for the purposes of this study that the 500 cfs <br /> <br />I <br /> <br />release in Rugust and September for endangered fish would be made in those <br /> <br />dry years of the study period with flow exceedance probabilities between <br /> <br />I <br /> <br />BO~ and 90~. The assumption is that Blue Mesa storage releases would n2t <br /> <br />be made for endangered fish purposes in the 90~ exceedance years or drier <br /> <br />I <br /> <br />years. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />WBLA, Inc. 1909 Broadway, #3, Boulder, Colorado B0302 <br /> <br />I <br />