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<br />. <br /> <br />. <br /> <br />. <br /> <br />As a first step in analysis of either the WUA available for fishes <br />or for recreation and impact of streamflow manipulation thereon, an <br />estimate was made of the maximum WUA (see attachment G) which a <br />..... <br />-.J given reach could provide for any life stage of a target species or <br />0') <br />N any form of stream-related recreational use. While it is true that <br />flow conditions would seldom, if ever, be such as to provide the <br />maximum WUA, (at least in many reaches), the maximum WUA possible in <br />a particular reach for a certain life stage or recreational oppor- <br />tunity provides a constant, a common denominator against which to <br />compare WUA values resulting from change in flow regime. <br /> <br />2. Present Conditions, WUA (1979 Level of Depletions) and Quality <br />Ratings <br /> <br />a. Attachment H <br /> <br />On February 1, 1979, the CIFSG submitted its analysis of pre- <br /> <br /> <br />sent condi t ions to the Study Manager. Thi sana lys i s covered <br /> <br /> <br />the eight stream reaches which the final hydrologic data pro- <br /> <br /> <br />vided by the BR and Dr. Gantor indicated might sustain signi- <br /> <br /> <br />ficant changes in instream flows. These reaches were: <br /> <br />l' Green Ri ver from Fontene 11 e Dam to Fl ami ng Gorge Reser- <br />voir, WY (flow records as at Green River, WY gage). <br /> <br />2' Yampa River from Wi11iams Fork confluence to Green River, <br />CO (flow records as at Maybell, CO gage). <br /> <br />3' White River from North For/South Fork confluence to <br />Meeker, CO (flow records as at Meeker gage). <br /> <br />50 <br />