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Gorge Dam in 2002. Information gathered will be used to evaluate whether flow and <br />temperature regimes based on Flaming Gorge Dam recommendations are benefitting endangered <br />or native fishes in the Green River without increasing distribution and abundance of non-native <br />fishes. <br />Study goals and specific objectives were: <br />Goal. Determine if changes in Green River flow and thermal regimes since 1996 are associated <br />with changes in distribution and abundance patterns of native and non-native fishes in Browns <br />Park and Lodore Canyon. Information will be used to evaluate if flow and temperature regimes <br />from Flaming Gorge Dam are benefiting endangered fishes without causing detrimental <br />increases in abundance of non-native fishes. <br />Objective 1. Determine if shifts in distribution and abundance of large-bodied fishes <br />occurred in Browns Park and Lodore Canyon by comparing results of shoreline <br />electrofishing and trammel net surveys with results of previous studies, particularly <br />Bestgen and Crist (2000). <br />Objective 2. Determine if shifts in distribution and abundance of small-bodied fishes <br />occurred in Browns Park and Lodore Canyon by comparing results of seining low- <br />velocity, nearshore areas with results of previous studies, particularly Bestgen and <br />Crist (2000). <br />Objective 3. Determine if Colorado pikeminnow spawn in the Green River upstream <br />of the Yampa River confluence by establishing a larval drift station in lower Lodore <br />Canyon, and by summer sampling to determine presence of ripe adults. <br />4