7166

• UCREFRP Catalog Number: 7166
• Author: Miller, W. H., et al.
• Title: Yampa River Fishes Study
• USFW Year: 1982.
• USFW - Doc Type: Final Report.
• Copyright Material: NO

TABLE OF CONTENTS
Page No..
LIST OF TABLES .................... .............. ...... ii.
LIST OF FIGURES ............................................ iv
SUMMARY .................................................. v.
INTRODUCTION......... ................................ .... 1
DESCRIPTION OF STUDY AREA .................................. 2.
OBJECTIVES ............................................. .T 4
METHODS .................................................... 5
Standardized Sampling Program ...................... .. 5,
Strata Delineation ................... .............. 5
Sampling Design and Procedures ....................... 5
Sampling Equipment ................................... 12
Special Investigations .................................. 13
Abundance and Distribution of Young Colorado
Squawfish .......................................... 13
Radiotelemetry of Colorado Squawfish................, 14
Survey of the Little Snake River ..................... 15
Data Storage, Retrieval and Analysis .................... 16
RESULTS AND DISCUSSION......... ......................... 17
Survey of Habitat and Relationships of Fishes........... 17
General .............................................. 17
Physicochemical Description of Strata ................ 1$
Little Snake River ................................... 26
Distribution and Relative Abundance of all Fish Species. 26
Yampa and Little Snake Rivers ........................ 41
Green River .......................................... 42
Habitat Preferences - All Species ....................... 43
Rare Fishes ..................... ....................... 46
Colorado Squawfish ................................... 47
Distribution and Abundance...... ................ 47
Habitat Preference ......................... ... 47
Migration and Movement ............................ 52
Spawning .......................................... 62
Age, Growth and Mortality ......................... 66.
Humpback Chub and Bonytail Chub .......................... 64
Razorback Sucker ......................................... 72
CONCLUSIONS AND RECOMMENDATIONS ............................ 75
LITERATURE CITED ................................... ...... 77
APPENDIX A, Yampa-White Physical Habitat Study ............ 79