9397

• UCREFRP Catalog Number: 9397
• Author: Hydrosphere Resource Consultants.
• Title: Gunnison River / Aspinall Unit Temperature Study - Phase I.
• USFW Year: 2002.
• USFW - Doc Type: 107,
• Copyright Material: NO

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Gunnison River / Aspinall Unit Temperature Analysis -Phase I
Page i
CONTENTS
EXECUTIVE SUMMARY ..............................................................................................A
Introduction ..................................................................................................................... A
1. INTRODUCTION .........................................................................................................1
1.1 Statement of Need /Project Objective .........................:........................:...................3
2. DATA COLLECTION .................................................................................................4
3. ANALYSIS OVERVIEW ...............................:.............................................................5
4. TEMPERATURE ANALYSIS OF THE THREE ASPINALL UNIT
RESERVOIRS ........................................:..........................................................................6
4.1 Data Analysis byReservoir -Blue Mesa ..................................................................7
4.2 Data Analysis by Reservoir -Morrow Point Reservoir ..........:...............................14
4.3 Data Analysis by Reservoir -Crystal Reservoir ............:........................................18
4.4 Discussion and Conclusions ...................................................................................22
5. RIVER TEMPERATURE ANALYSTS ....................................................................24
5.1 Background on Physical Processes .........................................................................24
5.2 Thermal Characteristics of the Gunnison River from Crystal Dam to De1ta..........25
5.3 Controllability ofTemperatures at Delta ................................................................30
5.4 Analysis of Release Temperature as a Temperature Control Option ................:....30
5.5 Analysis of Flow-Based Control Options ..............................................................:33
5.6 Conclusions to River Temperature Analysis .................................................:........36
6. OTHER CONSTRAINTS TO TEMPERATURE CONTROL ..............................38
6.1 Physical Constraints ........................:.......................................................................38
6.2 Non-Physical Constraints ..............................................................................:........40
6.3 Implications of Constraints on Temperature Controls ............................................44
7. CONCLUSIONS AND RECOMMENDATIONS ....................................................45
S. REFERENCES AND SELECTED BIBLIOGRAPHY ........................................46
Hydrosphere Resource Consultants