WSP12063

• File Number: 8240.300.31.J
• Description: San Juan River - Environmental Studies
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 2/1/2000
• Title: Non-Native Species Interactions: Management Implications to Aid in Recovery of the Colorado Pikeminnow and Razorback Sucker in the San Juan River
• Water Supply Pro - Doc Type: Report/Study

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TABLE OF CONTENTS

Page'

Executive Summary

II

Table of Contents

v

List of Tables

vii

List of Figures

Xl

Introduction

\

Study Area 4

Chapter I. Distribution, abundance and movement of channel catfish and common carp
in the San Juan River, 199\-\997 11
Introduction 12
Study Area 12
Methods 13
Results 14
Discussion 29
Conclusions 33

Chapter II. Egression and ingression of native and non-native fishes between main and
secondary channels of the San Juan River, 1994-1995 34
Introduction 35
Study Area 35
Methods 35
Results 36
Discussion 43
Conclusions 48

Chapter Ill. Food habits of San Juan River fishes, 1991-1995
Introduction
Study Area
Methods
Results
Discussion
Conclusions

49
50
50
51
54
75
80

San Juan River Non-native Species Interactions, Final Repon, 1 February 2000

v