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<br />.. <br /> <br />.. <br /> <br />,. <br /> <br />003184 <br /> <br />well as other information on projected regional population growth, utilization <br />trends for other flat-water recreational areas in the region, and trends in down- <br />stream river recreation demand. <br /> <br />2. Whitewater and Endangered Species Needs. Recreation demands for white- <br />water use will be developed for flows at the Deerlodge g~e. Describe interim <br />flow recommendations for the Yampd River at the Deerlodge g~e recently <br />developed (Tyus 1989) by the U.S. Fish and Wildlife Service for the endangered <br />fishes of the Upper Colorado River basin (Colorado squawfish, humpback chub, <br />bonytail chub, as well as the candidate razorback sucker). These interim flow <br />recommendations will be used as the basis for identifying possible impacts as <br />well as potential benefits of each alternative site to the endangered species. <br />Known life history requirements such as spawning, egg incubation, larval trans- <br />port; nursery areas, and juvenile and adult habitat will be identified and related <br />to each alternative site and scenario. <br /> <br />3. Systemwide and Wetland Needs. Identify critical main stem reaches ofthe <br />Yampa River where impacts on environmental water needs should be estab- <br />lished. Develop a list of assumptions for flow demands for downstream wetland! <br />riparian/wildlife areas, which generally revolve around the large cottonwood <br />areas along the Yampa River. These areas are used by bald eagles during the <br />winter and are very imponant from a variety of wildlife/wetland aspects. <br /> <br />Products <br /> <br />The study team will produce the following: <br /> <br />1. For each alternative site listed after the screening process in Task 2, a list of <br />assumptions associated with each discipline (wildlife, fisheries, wetlands) with <br />definitions according to low, moderate and high levels of water demand. These <br />assumptions and effects of demand levels will be defined in terms of instream as <br />well as reservoir demands. <br /> <br />2. Low, moderate, and high level of water demand for whitewater use and endan- <br />gered species downstream from the study area will be developed at the <br />Deerlodge g~e. <br /> <br />TASK 3.C--SEDIMENT TRANSPORT <br /> <br />Purpose <br /> <br />Tne study team will incorporate the recommendations of previous analyses of sediment <br />transpon requirements into subsequent activities so that adverse morphological changes <br />do not occur because of modified hydrologic regimes. <br /> <br />10 <br /> <br />DENI800P/033.51 <br />