WSP03387

• File Number: 8240.200.10.B
• Description: UCRBRIP - Riverine Fish Flow Investigations
• Basin: Colorado Mainstem
• Date: 6/1/2002
• Author: CDOW
• Title: Riverine Fish Flow Investigations 2002
• Water Supply Pro - Doc Type: Publication

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TABLE OF CONTENTS

APPROVAL PAGE .'''..'.'.''.... ....",.." """.., ,....... ........ ...................................................... ...........11

LIST OF TABLES......... .......................... ............ ............................ ....... ....................................... iv

LIST OF FIGURES........................ ........... ....................... ........................ ........................... ........... vi

LIST OF APPENDIX TABLES...................... ......................... ..................................................... vii

LIST OF APPENDIX FIGURES ..................................................................................................vii

INTRODUCTION................................................................ .................... ....................... ............1

STUDY AREA................................................................................................................................ 3

METHODS....................................................................... .................................................. .......11

Fish samples.. ..................................................................................... ............... ......1 ]
Habitat mapping ........................ ............ ............................................... .............................12
Hydraulic simulation ................ ........................................................... ................. ...........15
Habitat availability.................... ................................................................ ............ ............15

RESULTS and DISCUSSION ........................................................................ ............17

Species Composition ................................................................................ ..........................17

Yampa River.. ...................................................................... .................... ...........17
Colorado River ............................................................................................................. 23
Dolores River................................................................................................................ 26
Size Structure (Yampa, Colorado and Dolores Rivers).........................................................27

Density Estimation.............................................................................................................. 34
Yampa River ................................................................................................................ 34
Colorado River ................................... .......................................................................... 39
Dolores River ............................................................................................................... 41
Habitat Composition (Duffy and Colorado River)...............................................................42

Radio Telemetry ....................................................................... ..........................................50

SUMMARY ............... .... ....................................... ..................................................................... 51

CONCLUSIONS AND RECOMMENDATIONS........ ..................................................................52

ACKNOWLEDGEMENTS...... ...................................... ................................................................53

REFERENCES.................................... ." ... .......................... ........................... ................................54

APPENDIX TABLES AND FIGURES ..........................................................................................57