WSP06620

• File Number: 8240.300.10.B
• Description: UCRBRIP
• Basin: Colorado Mainstem
• Date: 6/1/2002
• Author: CDOW
• Title: Riverine Fish Flow Investigations 2002
• Water Supply Pro - Doc Type: Publication

TABLE OF CONTENTS

APPROVAL PAGE _. __. __ _. _ __ _. _ _ _ __ _ __ _. __ ____. _ __ __._ __ __ _ __ _ __ _ __ _ _ ___ _ _ _ _ _ __ _ _ _ _ __ __ __ _ _ __ _. _ _ __ _ _. __ _. _ _. _ _ _ _.. _. _ _ _ _ _ _ ._11

LIST OF TABLES __ _ __ _ _ __ __ _ __ __ _. ____ __ _ ___ ____ __ _' _ __ _d. __ _ __ __ _ .__ _ __ _ __d' ___._ _ _ __ _ _ _ __ __ _. _ _. _ _ __ __ __._ _. ___ _____ _ _ __ _ _ _ iv

LIST OF FI GURES _ _ _ _ _ _ _ _. _ _ _ _ _. _.. _ _ _ _ _. _ _ _ _ _. _. _ _ _ _ _ _ _. _ _ _... _ _ _ _ _ _ _ _. _ _ _ _ _ _ _ _. _ _... _ _. _ _ _ _. _ _ _ _ _ _ _ _ _. _ _... _ _ _ _ _'.' _. _. _ _ _. _ _. _ _. _ _ _ _ _ _ _ vi

LIST OF APPENDIX TABLES__.___._._..___.____________.__...__._____._.____.__.._'__ _ _.________Vll

LIST OF APPENDIX FIGURES _ _. _ ___ __. _. __ _ __ _. __ _. __ __ _ __ _ ___ _ _ _'_ _. _ __ _ _ __ __ __ _. _ __ _ __. _ _ __ _. _ __ _ _ .. ____ _ _ _ _ _ _ VII

INTRODUCTION .____. ._.______._.______

__.__._________..____________.__.___..__.____________.______.__.__.____.___.1

STUDY AREA _ __ __ _ __. ___ _ _. __ __ _ __ __ __.._ ___ _.. _ __ _ ___ _ __ __._ __ _ __ _._ _. _ __ __ _._. .__ _ _ _ _ __ _ _._ __ _ __ _ ___ __ _.. __ _ __ _ __ __ _.. _._. _ __. __ _. _.. _. _.._ 3

METHODS_. _ __ __ _.... _. _. _ __. _ _ _ __ _.._ _ ___' _. _ __ _ __ _ _. _ __. _. _ __. __ _ __ __ __ _ _ _ ___ _ _. _ _ _ _. _ __ _. _ __ _ __ _ __ _. _ _. _ __ __ _.. _.. _ __. __ _ __ _ _ _. _ _ J I

Fish samples _. _ _. _ __ __ _. _ _ _. _. _ __ _. _ _. __ __ _. __ __ _ __. _. _ __. _ _ __ __ __ _ _ _ __ _.. _. _ _ _._ _ __ . _ __ _ __ _ _ __ _ _. _ __ __.. _ __. _.. _. _ .__ _ _ _. _ _ II
Habitat mapping _ __ _. _... __ _ ____ _._ __ _..... __ _ __ _ ___ _ _.. __d' _ __ _ __ __.... ___ _ __ __ __ _. _ __ _ _ __ ___. ._. _ _.. _ _ _. _._ _. __. _ _ ___ _ _ _ 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)_________________...__.____.____________._____._.______._____A2

Radio Telemetry _ ___. __ _.__. __ _ __ _' ____ __ _ __._ _ __ ____ .__ ___ __. __ ___ _ ______ _. __ _ ___. ___ _ _______ _ __ __ ____ __ _ ____ ____ _ ____. _ _ __. _ _ _ _ 50

SUMMARY __ __ _ __ __. __ _ __ _ __ _ _ __ __ ____. _ __ _ __ ____..__ ___ __ __ __ ___ _ _.. _._____ _ ____.___ __ _ _ __ _______._ ___ _____ _______ _____ _. _ _. ____. __ _ _ _ _ _ 51

CONCLUSIONS AND RECOMMENDATIONS ___. __ _ __ __ _____ _ ___ __ ___ _ __ __ _ __ __ _ ___. _.. __ _. __ _. _ _____.__ _ ____ __ _ ___ _ _ _ _ 52

ACKNOWLEDGEMENTS __' _ __ __ _ ______ ________. _ ____ ___._._ _ ______._ _____ ..__._ __ _ ___.' _____ __ ___ _______ _ ___ ______ __. ___. ___ _ __ _ 53

REFERENCES _ ___ _ __ _ __ __ __ _. _ _. _' _ _. __ _ __ ____ _. _. _ __. _ _ __ ____ __ _ __ _ ____. _ _.. ___ _' _ _ _____ _ __. _ ___ __ __ _ __ _ ____._ __ __ _. .__._. _ ___ __ _ _ __ _ _ _ _ 54

APPENDIX TABLES AND FIGURES __... __ __ __ __ _______ _ __._ _ __ _____._ ___ _ __ _'_ _ _. _ __ ___ __ _._ __ _ _ _' __ _ ______ _ _ _ ___.._ 57

III