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<br />2 <br />METHODS <br />Sampling Sites <br />• <br />The study area consisted of the Yampa River from Round Bottom at river <br />mile (RMI) 127 to the confluence with the Green River (RMI 0) (Figure 1). <br />The Yampa River was divided into two sections, Yampa Canyon (RMI 0-44.9) and <br />i <br />the Upper Yampa (RMI 45-127). There were three sample types: intensive, <br />intervening, and special. Intensive sampling was standardized by gear type, <br />area, and amount of time sampled. Intervening samples were performed in <br />areas adjacent to intensive samples. Gear used in intervening samples was <br />similar to that used in intensive samples, but different techniques were <br />occasionally employed. Hook-and-line fishing (angling) was considered <br />special sampling and was conducted at intensive sites in addition to <br />standardized sampling and in other areas during the habitat census. Angling <br />captures within intensive sites were analyzed separately from intensive <br />i samples. Intensive sampling was conducted at four 3-mile sites on the Yampa <br />River. The sites were selected because of accessibility at all flow levels, <br />high habitat diversity, and high incidence of previous squawfish captures. <br />i The areas selected were: <br />1) Yampa Canyon at Cleopatra's Couch (RMI 16-19), <br />2) Lilly Park - Little Snake (RMI 50.5-53.5), <br />3) Sunbeam (RMI 70.5-73.5), and <br />4) Juniper Springs (RMI 90.5-93.5). <br />When time and conditions (water level and accessibility) allowed, additional <br />i intervening samples were taken outside of intensive sites. For comparative <br />purposes these data were treated separately for most analyses except where noted <br />in the text. <br />a <br />i