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<br />. , <br />. , ' <br /> <br />fecundity, maturity, and early development. Studies of macroinvertebrates <br />were completed by Carlson et lie (1979). An annotated bibliography assembled <br />in 1976 and updated in 1980-listed studies_of the native fishes and <br /> <br />macroi nvert~!>rates, and provi ded- selected rererences that di-scus-sed econorrii c, <br />political, and sociological factors confounding management of the endangered <br /> <br />Colorado River fishes (Wydoski et ~. 1980). <br /> <br />Colorado River Fishery Project <br /> <br />The requirements of Section 7 of the ESA had potentially serious <br />ramifications for new water projects proposed by USBR, and for the operation <br />of several of their existing facilities such as Flaming Gorge and Blue Mesa <br /> <br />reservoirs. However, lack of data on instream flow and other habitat <br /> <br />requirements of endangered Colorado River fishes was recognized by both USBR <br />and USFWS as serious impediments to development of reasonable and prudent <br />alternatives for operating existing, and designing proposed projects. As a <br />result, USBR agree to provide funding to obtain essential information on <br />ecological requirements of the endangered fishes. <br />In June 1979, USFWS and USBR signed a Memorandum of Understanding (MOU) <br />whereby USBR agreed to fund a comprehensive investigation of the endangered <br />Colorado River fishes in the upper basin. The primary objective of the <br />USFWS's effort, named the Colorado River Fishery Project (CRFP), was to <br />acquire information needed to recover endangered fishes while allowing USBR <br />to operate existing projects, as well as to plan and construct proposed <br />projects. <br />Initially, the CRFP extended over 965 km of the Colorado and Green <br /> <br />rivers and their tributaries in Colorado and Utah. Studies focused on <br />