9376

• UCREFRP Catalog Number: 9376
• Author: CH2MHill.
• Title: Duchesne River Hydrology and Water Availability Study.
• USFW Year: 1997.
• USFW - Doc Type: \
• Copyright Material: NO

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Table of Contents
Page No.
EXECUTIVE SUMMARY ............................................................................................................................ES-1
BACKGROUND ....................................................................................................................................................ES-1
STUDY PURPOSE AND OB]ECTIVES .................................................................................................. ...................ES-1
SUMMARY OF AGENCY WORKSHOPS ..................................................................................................................ES-1
FLOW ANALYSIS OF THE DUCHESNE RIVER ........................................................................................................ES-2
REVIEW OF USBR PRE-DEVELOPMENT FLOWS ............................................................................... ...................ES-2
FLOW ANALYSIS OF THE DUCHESNE RIVER WITH FULL BONNEVILLE UNIT OPERATION ....................................ES-3
FLOW ANALYSIS OF THE DUCHESNE RIVER WITH UINTAH BASIN REPLACEMENT PROJECT
PROPOSED OPERATION ..................................................................................................................ES-3
USFWS PRELIMINARY FLOW RECOMMENDATIONS ...........................................................................................ES-4
COMPARISON OF HISTORIC RANDLETT FLOWS TO USFWS PRELIMINARY RECOMMENDED FLOWS ...................ES-5
DETERMINATION OF POTENTIAL SOURCES OF WATER ........................................................................................ES-6
STUDY RESULTS AND CONCLUSIONS ..................................................................................................................ES-7
CHAPTER 1-INTRODUCTION ..................................................................................................................1-1
BACKGROUND ..................................................................................................................................................... 1-1
STUDY DESCRIPTION ........................................................................................................................................... 1-1
DUCHESNE RIVER BASIN DESCRIPTION ............................................................................................................... 1-2
STUDY PURPOSE AND OBJECTIVES ...................................................................................................................... 1-2
REVIEW OF PREVIOUS WORK .............................................................................................................................. 1-4
ACKNOWLEDGMENTS ...........................................................................................................................:....:......... 1-4
CHAPTER 2--INFORMATION GATHERING .....................................:..................................................... 2-1
' DUCHESNE RIVER BASIN USGS FLOW DATA ...................................................................................................... 2-1
USSR PRE-DEVELOPMENT FLOWS ..................................................................................................................... 2-1
USFWS PRELIMINARY FLOW RECOMMENDATIONS ............................................................................................ 2-1
AGENCY OPERATING DATA .............................................................................................:................................... 2-1
UBRP PROJECT DATA ......................................................................................................................................... 2-2
CHAPTER 3-WORKSHOPS ........................................................................................................................ 3-1
SUMMARY OF AGENCY WORKSHOPS ................................................................................................................... 3-1
CHAPTER 4-FLOW ANALYSIS OF DUCHESNE RIVER ..................................................................... 4-1
' INTRODUCTION .................................................................................................................................................... 4-1
FLOW STATISTICS AT RANDLETT FOR 1943 THROUGH 1994 ................................................................................ 4-1
DEVELOPMENT OF RANDLETT FLOW DATA TO EARLY 1900S .............................................................................. 4-3
HYDROLOGIC EFFECTS ........................................................................................................................................ 4-3
CHAPTER 5-REVIEW OF USBR PRE-DEVELOPMENT FLOWS ....................................................... 5-1
CHAPTER 6--FLOW ANALYSIS OF DUCHESNE RIVER WITH FULL CUP
' BONNEVILLE UNIT OPERATION .............................................................................................................. 6-1
BONNEVILLE UNIT OPERATION ............................................................................................................................ 6-1
HISTORY .............................................................................................................................................................. 6-1
' REVIEW OF HISTORIC DIVERSIONS ....................................................................................................................... 6-1
EXPECTED FUTURE DIVERSIONS .......................................................................................................................... 6-2
' CHAPTER 7-FLOW ANALYSIS OF THE DUCHESNE RIVER WITH UBRP PROPOSED
OPERATION .................................................................................................................................................... 7-1
UBRP DESCRIPTION ............................................................................................................................................ 7-1
' Uintah Unit Project Summary ........................................................................................................................ 7-1
Upalco Unit Project Summary ....................................................................................................................... 7-2
UBRP IMPACTS ON LOWER DUCHESNE RIVER .....................................................................:.............................. 7-2

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