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<br />, <br />I <br />I <br />,I <br />I <br />I <br />I <br />, <br />I <br />t <br />. <br />, <br />I <br />t <br />I <br />I <br />il <br />I <br />I' <br /> <br />TABLE OF CONTENTS <br /> <br />EXECUTIVE SUMMARY. . . <br />TABLE OF CONTENTS. . . <br />LIST OF TABLES . <br /> <br />i <br /> <br />. i i i <br /> <br />iv <br /> <br />LI ST OF FI GURES . <br />INTROUCTlON . . <br />STUDY AREA <br /> <br />viii <br /> <br />METHODS . . . . . . . . . . . . . . . . . . . <br />Electrofishing . . . . <br />Trammel Netting . . . . . . . . . . . . . . . . . <br />Rare Fish Species. . . . . . . . . . . . . . . . . <br />Compilation of Data. . . . . . . . . <br /> <br />...... <br /> <br />1 <br />2 <br />5 <br />5 <br />5 <br />7 <br />7 <br /> <br />. . . . <br /> <br />RESULTS AND DISCUSSION . . . . . . . . . . . . . . . . . . 8 <br />Distribution and Abundance . . . . . . . . . . . . . 8 <br />Size Structure . . . . . . . . . . . . . . . . . . . . . . .. 12 <br />Rare Fish . . . . . . . . . . . . . 21 <br />Distribution .... . . . . . . . 21 <br />Colorado Squawfish 21 <br />Roundtail Chub . . . . . . . 24 <br />Sightings . . . . . . . . . . . . . . 24 <br />Radio Telemetry . . . . . . . . . . . . . . 24 <br />Movement and Habitat Use 28 <br />Spawning Areas .. . . . . . . . . . 28 <br />Movement Barriers . . . . . . . . . . 32 <br />Radio Tracking Difficulties . . . . . . . . . . . 32 <br />1994 Schedule ...... . . . . . . . . . . . . 34 <br /> <br />APPENDIX I (Electrofishing CPUE data) . . <br /> <br />...... <br /> <br />35 <br /> <br />APPENDIX II (1991-1992 Flow data) . . . . 40 <br /> <br />APPENDIX III (Length and weight data and YOY-Juvenile-Adult breakdowns <br />for fish sampled on adult monitoring trips 1991-1993) . .. 43 <br /> <br />APPENDIX IV (Contacts with five radio-tagged Colorado squawfish tagged <br />between April 13, 1993 and October 8, 1993) . . . . . . . 72 <br /> <br />APPENDIX V (Colorado squawfish original capture locations) ....... 74 <br /> <br />i i i <br />