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TABLE OF CONTENTS <br />Page <br />LIST OF TABLES .......................................................... ii <br />LIST OF FIGURES ........................................................ iii <br />ACKNOWLEDGMENTS .................................................... v <br />EXECUTIVE SUMMARY ................................................... vi <br />INTRODUCTION .......................................................... 1 <br />METHODS ............................................................... 2 <br />Sampling Reaches .................................................... 2 <br />Sampling Protocol .................................................... 2 <br />Data Analysis ........................................................ 5 <br />RESULTS ................................................................ 6 <br />Calculation of CPE ................................................... 6 <br />Colorado Pikeminnow Relative Abundance ................................ 7 <br />Green River ................................................... 9 <br />Colorado River ................................................ 10 <br />Yampa River ................................................. 12 <br />White River .................................................. 12 <br />Relationship Between Mean CPE and Population Estimates ............ 13 <br />Size Structure ....................................................... 13 <br />DISCUSSION ............................................................ 18 <br />CONCLUSIONS .......................................................... 21 <br />RECOMMENDATIONS .................................................... 22 <br />LITERATURE CITED ..................................................... 22 <br />Affiliation of Individuals Cited as Personal Communication <br />APPENDIX A <br />i <br />