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r' <br />METHODS <br />Throughout the study two or three wild card sites were sampled in addition to the monitoring <br />sites in an effort to pursue the Colorado squawfish spawning issue and as a means of validating <br />the long term data set. The wild card sites included: Flat Carryon (RM 182.2). Rock Creek (RM <br />174.1); Chandler Falls (RM 166.6); and Rabbit Valley (RM 148.8). On occasion it was necessary <br />to incorporate data from the most proximal wild card site in the long term analyses. <br />Sampling was conducted primarily during the crepuscular and night time hours. Sampling <br />targetted two general components of the fish community: 1. small sized cyprinids and the early life <br />stages of all species occupying low velocity habitats and 2. juvenileladult main channel dwellers <br />(large sized fish). The following techniques were employed at each site: (6) trammel nets (23m x <br />1.8m [25mm or 12mm inner mesh]) set in low flow, main channel habitats (pools, eddy lines) <br />checked at 2h intervals; 3-4 hoop nets (0.6m diameter, 3m in length [12mm mesh]) fished <br />through the night in shoreline habitats; boat electrofishing (16 ft sport boat equipped with a 4500 <br />watt generator and Coffelt Variable Voltage Pulsator (VVP-15)); and 3-61arva1 light traps. iow <br />velocity habitats were sampled throughout the canyons with a two man seine. <br />All target species (Gila spp., Ptychocheilus Lucius) >175mm were PIT tagged. All Gila spp. <br />were photographed and subjected to a series of morphometric measurements and rankings <br />(Appendix Figure 1). Scales were collected from all target species. <br />All catch per unit effort (CPE) values have been standardized to fish per 23 meter net-hour <br />(trammel nets), fish per actual hour electrofishing, and fish per square meter of low velocity <br />habitax sampled (seine hauls). The hoop net catch was incorporated in the netting species <br />composition analysis for. All locations are presented in river miles from the confluence of the <br />Green and Colorado Rivers. Green River flow as recorded by the United Stage Geologic Survey <br />(USGS) at their Green River, Ut gage (No. 09315000) is reported as cubic feet per second (cfs) <br />All other units of measwe are metric. <br />DRAFT 3 , ~.-~ ~:: <br />., <br />