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fishes to wetlands, and vice versa, and whether fishes were observed in wetlands. Potential for <br />connection at flows higher than those observed were also made, in the event that future <br />hydrologic conditions merit even higher releases from Flaming Gorge Dam. Observations were <br />supplemented with communication with wetland managers about modes of operation, <br />connections, and potential presence of fishes. We hypothesized that this information may be <br />useful to understand if newly discovered (2005) age-0 northern pike in the Browns Park reach of <br />the Green River were being produced in wetlands that connect with the river during higher <br />spring flows or if pike were spawning in inundated vegetation within the active channel. <br />Using information gained from May 2006 habitat surveys, we then sampled the Green <br />River in Browns Park at 18 locations, mostly from river kilometers 613.6 to 585.9 on 19-21 <br />August 2006; most sites were in upstream areas but a few were near the Lodore Canyon boat <br />ramp. This sampling was designed to provide further information on the distribution and <br />abundance of northern pike in the reach especially relative to observations of potential pike <br />habitat in spring surveys, and was focused in an area up- and downstream of locations where <br />pike had been collected in 2005 (Beaver Creek confluence and Hog Lake). Sampling was <br />conducted with a 9.1-m-long electric seine. Sampling effort was focused mostly in near shore <br />areas or backwaters with low velocity and sand or silt substrate, locations known to support age- <br />0 northern pike. Such areas in this reach of the Green River are typically heavily vegetated with <br />submerged or emergent macrophytes. Sampling effort focused on capture of northern pike and <br />centrarchids, potentially predaceous fishes, although other species detected during sampling <br />were noted and their qualitative abundance was recorded. The northern pike and centrarchids <br />were counted, measured, weighed, and then preserved. Predaceous fishes (pike and smallmouth <br />bass) were preserved in ethanol so that additional information could be gathered via otolith <br />analysis. <br />Stream flow and water temperature data collection and presentation.-Most temperature <br />data were from lower Lodore Canyon and Mitten Park (pers. comm., G. Smith, U. S. Fish and <br />Wildlife Service, Denver, Colorado). Flow data were from U. S. Geological Survey gauges. <br />First, we describe the major changes in flow and temperature regimes in Lodore and Whirlpool <br />12 <br />