7202

• UCREFRP Catalog Number: 7202
• Author: Osmundson, D. B. and L. R. Kaeding.
• Title: Studies of Colorado Squawfish and Razorback Sucker Use of the '15-Mile Reach' of the Upper Colorado River as Part of Conservation Measures for the Green Mountain and Ruedi Reservoir Water Sales
• USFW Year: 1989.
• USFW - Doc Type: Final Report.
• Copyright Material: NO

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TABLE OF CONTENTS
ACKNOWLEDGEMENTS ...................................................... ii
LIST OF TABLES ........................................................ v
LIST OF FIGURES ....................................................... vi
INTRODUCTION .......................................................... 1
Background ....................................................... 1
The 15-Mile Reach ................................................ 2
METHODS ............................................................... 4
RESULTS ............................................................... 8
Adult Relative Abundance ......................................... 8
Movement of Radio-Tagged Adult Fish .............................. 12
Colorado Squawfish .......................................... 12
Razorback Sucker ............................................ 22
Larval and Young-of-the-Year Collections ......................... 24
Colorado Squawfish .......................................... 24
1986 ................................................... 24
1987 ................................................... 28
1988 ................................................... 28
Razorback Sucker ............................................ 30
Other Species ............................................... 30
General ................................................ 30
Native Fishes .......................................... 33
Introduced Fishes ...................................... 36
Spawning of Endangered Fishes .................................... 42
Colorado Squawfish .......................................... 42
Razorback Sucker ............................................ 46
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