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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Objective 3: Describe influence of BaR's operation of Lake Powell on nursery , <br />habitat of Colorado sguawfish. <br /> <br />1. Relatively low densities of larvae and YOY Colorado sguawfish and humpback <br />chub are typically seen in the inflow of the Colorado River into Lake <br />powe 11 . <br /> <br />2. The few endangered fish seen in this region utilize backwater habitats that <br />develop at medium lake levels in mid summer, but are greatly diminished at <br />high lake levels during spring runoff and at low levels during the late <br />summe r . <br /> <br />3. The density and diversity of predators and competitors in the lake inflow <br />may impose a mortality on young endangered fishes in the area; the effect of <br />potential predators and competitors on endangered fishes has not been <br />assessed. <br /> <br />4. Few juvenile or adult endangered fishes are found in the inflow and in the <br />main lake; their rareity in the area may be attributed to competition/preda- <br />tion or to emigration. <br /> <br />26 <br />