8279

• UCREFRP Catalog Number: 8279
• Author: Brown and Caldwell.
• Title: Phase 1 Coordinated Facilities Water Availability Study for the Endangered Fishes of the Upper Colorado River.
• USFW Year: 2000.
• USFW - Doc Type: \
• Copyright Material: NO

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PHASE I
COORDINATED FACILITIES WATER
AVAILABILITY STUDY
FOR THE
ENDANGERED FISHES OF
THE UPPER COLORADO RIVER
CONTENTS
Page
LIST OF TABLES .................................................................................................................... .. iv
ACRONYMS ...................................................................................................................................v
' EXECUTIVE SUMMARY .......................................................................................................ES-1
CHAPTER 1 INTRODUCTION AND PURPOSE ....................................................................1-1
1.1 GENERAL ..........................................................................................................................1-1
1.2 BACKGROUND ................................................................................................................1-2
1.2.1 Late Summer and Fall Base Flow Period Augmentation ..................................... 1-3
' 1.2.2 Spring Pear Enhancement ................................................................................... 1-5
' CHAPTER 2 GROUND RULES AND ASSUMPTIONS ......................................................... 2-1
2.1 INTRODUCTION .............................................................................................................. 2-1
2.2 GROUND RULES .............................................................................................................. 2-1
' 2.2.1
2.2.2 Administration .................................................................................................... 2-1
No Restrictions on Alternatives Investigated ...................................................... 2-2
2.2.3 Evaluation and Screening Criteria ....................................................................... 2-3
' 2.2.3.1 Impact on Existing Projects' Yields .................................................... .. 2-3
2.2.3.2 Effect on Existing Projects' Operations and Maintenance Costs .......... 2-4
2.2.3.3 Effect on Existing Projects' Operational Flexibility or Reliability....... 2-4
2.2.4 RIPRAP Alternatives ...........................................................................................2-4
2.2.5 Incentives for Participation ................................................................................ .. 2-4

' 2.3 ASSUMPTIONS .................................................................................................................2-5
2.3.1 Model...... .............................................................................................................2-5
2.3.2 Baseline Hydrology ........................................................................................... .. 2-6
' 2.3.3
2.3.4 Baseline Conditions .............................................................................................. 2-8
Flow Targets . . 2-8
2.3.5 Scoring ...... ......................................................................................................... 2-10
' 2.3.6 Coordinated Reservoir Operations Group .......................................................... 2-11
2.3.7 Piscatorial Purposes ........................................................................................... 2-11
' CHAPTER 3 ALTERNATIVES ................................................................................................ 3-1
3.1 INTRODUCTION ............................................................................................................. 3-1
3.2 EXPANDED COORDINATED RESERVOIR OPERATIONS ........................................ 3-3
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