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r <br />spring. In addition, studies to date have not specifically addressed <br />interactions between non-native and native fish species and the <br />potential effects of dam operations on non-native fishes. <br />III. STUDY GOALS. OBJECTIVES AND END PRODUCT: <br />GOAL: Refine FWS seasonal flow recommendations for the <br />operation of Flaming Gorge Dam by 1995. <br />Objective 1: Track the reproductive success of endangered fish and <br />other species in the Green and Yampa Rivers, and <br />determine the relationship between flow and spawning <br />success of endangered fish and other fish species <br />downstream of Flaming Gorge Dam. <br />Objective 2: Evaluate recruitment of endangered fish from age 0 to <br />subsequent life history stages and determine the <br />relationship between seasonal flows and survival of young <br />fish. <br />Objective 3: Monitor the relative abundance and population structure <br />of endangered and other selected co-occurring fish <br />species to acquire information on interactions between <br />species and how flows may differentially affect species. <br />MM PRODUCT: Refined, biologically-based seasonally flow <br />recommendations for Flaming Gorge Dam that would benefit <br />endangered and native fish species. <br />IV. Study Area: <br />The study area includes the Yampa River, the Green River from Flaming <br />Gorge Dam downstream to its confluence with the Colorado River and the <br />Colorado River from its confluence with the Green River downstream to <br />the Lake Powell inflow area. <br />V. Study Methods/Approach: <br />A team of upper basin researchers composed of representatives from the <br />Bureau of Reclamation (BR), Fish and Wildlife Service (FWS), Colorado <br />Division of Wildlife (CDOW), Utah Division of Wildlife Resources (UDWR), <br />and the Larval Fish Lab (LFL), Colorado State University were assembled <br />under the Recovery Implementation Program (RIP) in 1990, to design and <br />conduct studies which would support and refine the flow recommendations <br />proposed by the FWS for the spring, summer/fall, and winter periods in <br />the Green River system below Flaming Gorge Dam. <br />The overall approach devised by this team consisted of an integrated <br />research plan with three basic components (see Attachment A). The plan <br />was originally based on a combination of long term systematic <br />sampling/ research studies and shorter term studies which would test <br />specific hypotheses. In addition, a habitat management component was <br />2-