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j <br />Study Area <br />Field activities were conducted on a 88 km segment of the Colorado <br />between and the Colorado-Utah boundary; a 26 km reach of <br />the Gunnison river from Dominguez to its confluence with the Colorado River; <br />a 72 km reach of the White River from Rio Blanco Lake to Rangely; and a 195 km <br />reach of the Yampa River from the Round Bottom area immediately west of Craig <br />to its confluence with the Green River in Dinosaur National Monument. <br />Methods <br />Fis'n tay7i g and collection way accomplished by angling, electrofishing <br />and netting. Spawning success was monitored by seine and dip net collections <br />in selected trend zones during the months of July, August, and September. <br />Specimens collected were taken to the Larval Fish Laboratory at Ft. Collins for <br />identification. Habitat parameters were measured at all sample sites within the <br />trend zones. The data collected is currently being loaded onto the computer <br />and analyzed in order to develop future research and management recommendations. <br />A detailed description of methods used in this investigation will be presented <br />in the final report. <br />Results and Discussion <br />Two reports have been produced to date during the preparation of the final <br />report; Age and Growth Studies of the Colorado Squawfish (Ptychochelius lucius) <br />and Observations on the Ecology of Colorado Squawfish (Ptychochelius lucius) in <br />the Yampa River, Colorado, 1982. A copy of each report is attached. Final <br />results will be presented in the July 1984 report.