9313

• UCREFRP Catalog Number: 9313
• Author: Burdick, B. D., J. Flair, M. Lloyd and B. Scheer.
• Title: Native and Nonnative Fish Use of Two Gravel-Pit Ponds Connected to the Upper Colorado River at 29-5/8 Road Near Grand Junction, Colorado.
• USFW Year: 1997.
• USFW - Doc Type: Project number CAP-6-GP,
• Copyright Material: NO

TABLE OF CONTENTS
LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
LIST OF FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
LIST OF APPENDICES . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
ACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General. ......................... ... 1
Background . . . . . . . . . . . . . . . . . . . . . . . 2
Purpose and Objectives . . . . . . . . . . . . . . . . . . . . . . 3
STUDY AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
METHODOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Field Sampling . . . . . . . . . . . . . . . . . . . . . . . . 7
Data Compilation and Analysis . . . . . . . . . . . . . . . . . . . 8
RESULTS AND DISCUSSION . . . . . . . . . . . . . . ... . . . . 8
Pre-Connection Channel Inventory . . . . . . . . . . . . . . 8
Inventory of Large-sized Fishes . . . . . . . . . . . . . . . . 10
Composition and Abundance . . . . . . . . . . . . . . . . . . 10
Endangered Fishes . . . . . . . . . . . . . . . . . . . 10
Pre-Runoff Sampling . . . . . . . . . . . . . . . . . . 10
Runoff Sampling . . . . . . . . . . . . . . . . . . . . 10
Post-Runoff Sampling . . . . . . . . . . . . . . . . 14
Gear Type vs. Species Selectivity . . . . . . . . . . . . . . 14
Fish Recaptures . . . . . . . . . . . . . . 14
Inventory of Small-sized Fishes . . . . . . . . . . . . . . . 18
Composition and Abundance . . . . . . . . . . . . . . 18
Size Structure of Common Fishes . . . . . . . . . . . . . . . 20
CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ECOLOGICAL FUNCTIONS OF A RIVERINE SYSTEM . . . . . . . . . . . . . . . . 21
STRATEGIES TO ENHANCE OR RESTORE FLOODED BOTTOMLAND HABITATS
IN THE UPPER COLORADO RIVER BASIN . . . . . . . . . . . . . . . . . 22
ALTERNATIVE MANAGEMENT OPTIONS . . . . . . . . . . . . . . . . . . . . . 24
RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
LITERATURE CITED . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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