9294

• UCREFRP Catalog Number: 9294
• Author: Day, K. S. and C. Crosby.
• Title: Backwater Use by Young-og-the-Year Chub ‎(Gila sp.)‎ and Colorado Squawfish ‎(Ptychocheilus lucius)‎ in Desolation and Gray Canyons of the Green River, Utah.
• USFW Year: 1997.
• USFW - Doc Type: FG-,
• Copyright Material: NO

TABLE OF CONTENTS
~`~ST OF FIGURES ......................................................... iv
a ~~
'.t LIST OF TABLES .......................................................... v
~~
EXECUTIVE SITMMARY ................................................... vii
INTRODUC'I'ION ..........................................................1
STUDY AREA ...:.........................................................2
METHODS ................................................................5
Fish Community Sampling ............................................... 6
Habitat Features Sampling ............................................... 8
RESULTS ................................................................11
Habitat Features ...................................................... 11
Habitat Use .........................................................13
Chubs ........................................................13
Coloradosquawfish .............................................18
Fis~ Community and Catch-per-unit-effort .................................. 24
Chubs ........................................................27
Coloradosquawfish ...................................... .....27
Other fish species ...............................................27
DISCUSSION .............................................................28
RECONIMENDATIONS ..................................................... 29
LITERATURE CITED ....................................................32
APPENDICES ............................................................33
Appendix A Some characteristics of backwaters in Desolation and Gray canyons of the
Green river, Utah which held YOY razorback suckers. during 1994. ... 34
iii