7983

• UCREFRP Catalog Number: 7983
• Author: U.S. Department of the Interior.
• Title: Quality of Water, Colorado River Basin.
• USFW Year: 1993.
• USFW - Doc Type: Progress Report No. 16,
• Copyright Material: NO

CONTENTS

Page

Chapter 5 - Colorado River Basin Salinity Control Program-continued
Title II Unit summaries-continued
Sinbad Valley Unit ................................................. 57
Uinta Basin Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Reclamation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

USDA ....................................................... 58

Virgin Valley Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Chapter 6 - Salinity conditions ............................................... 59
Factors influencing salinity .............................................. 59
Hydrologic conditions and reservoir effects ............................... 60
Water use by agriculture and M&I users. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Salinity control .................................................... 62

Historic salinity conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Compliance with the salinity standards .........................:........... 63
Natural variation in salinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

References cited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

General references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Appendix A-Quality of water tables ........................................... A-I

Figures

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FIGURES

Map of Colorado River Basin ........................................

Sources of salinity ................................................

Agricultural sources of salinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Salinity damages and costs .........................................
Salinity damage curve .............................................
Map of Colorado River Basin Salinity Control Program ....................
Schematic of Big Sandy River Unit ...................................
Schematic of Grand Valley Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schematic of Meeker Dome Unit .....................................
Schematic of Paradox Valley Unit ....................................
Natural flow and reservoir storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reservoir effects on salinity (Glen Canyon Dam) .........................
Comparison of depletion projections (1987 projection VS. 1992 projection) . . . . . . .
Salinity in Lake Powell (Wahweap station) .............................
Salinity at Imperial Dam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normalized salinity at Imperial Dam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Salinity projections at Imperial Dam ..................................

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