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<br />. <br /> <br />. <br /> <br />CURVE SET: <br /> <br />12 - Colorado Squawfish Deposition <br /> <br />WHERE DATA COLLECTED: Green and Yampa Rivers. <br /> <br />WHERE CURVES APPLY: Green, Colorado, Yampa rivers in confirmed or <br />suspected spawning areas. <br /> <br />WHEN DATA COLLECTED: July - August <br /> <br />WHEN CURVES APPLY: Application of curves should be tied to spawning <br />and in conjunction with staging curves; Time <br />should be determined by examining hydrologic <br />records to determine conditions of flow and <br />temperature suitable for spawning. <br /> <br />HOW DATA COLLECTED: Radiotelemetry <br /> <br />PARAMETERS: Depth = total water column depth in feet at point of <br />triangulation. <br /> <br />Velocity = mean water column velocity in feet/second at <br />point of triangulation. <br /> <br />Substrate = at point of triangulation; substrate used was an <br />overlay of the Green and Yampa River data, <br />because substrate data from the Green River <br />reflected use of larger materials (cobble) while <br />data from the Yampa River showed use of large <br />and small material (cobble and gravel); see <br />Table C-1. <br /> <br />Habitat = see Table C-2. <br /> <br />CONFIDENCE RATINGS: 'C-II for depth, velocity, substrate on Green and <br />Yampa rivers, because of small sample size and <br />limited number of spawning sites involved; '0' <br />for depth, velocity, substrate on Colorado <br />River, because data from another river system. <br /> <br />CONSTRAINTS: <br /> <br />1. Application of curves should be tied to spawning times and in <br />conjunction with staging curves. <br /> <br />2. Apply only in confirmed or suspected spawning areas. <br /> <br />QUALIFIERS: <br /> <br />1. Radiotelemetry data used instead of available data from <br />conventional gears when statistical tests showed significant <br />differences in gear types, and radiotelemetry data were <br />observed to better represent habitat use. <br /> <br />DATA GAPS/NEEDS: <br /> <br />Additional information needed on this life <br />function of the species. <br />See Appendix D <br /> <br />RAW DATA USED: <br /> <br />A.l.5 <br />