WSP09828

• File Number: 8276.852
• Description: Moapa Valley Subevaluation Unit - Colorado River Salinity Control Project
• State: NV
• Basin: Colorado Mainstem
• Date: 6/1/1980
• Title: USDA Salinity Control and Environmental Assessment
• Water Supply Pro - Doc Type: EIS

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TABLE OF CONTENTS

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FOREWORD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

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SUMMARY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. i i i

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I NTRODUCTI ON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . .. . . . .. . . . .. . . .. . . . . 1
Authority for Investigation................................................. 1
Objective and Scope.............................o........................... 4
Public Involvement Process.................................................. 6

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SETTING. ......... ....... ..... .... ........ ....... .... ..... . .. . .... .............

Location.......... eo...'... .................................................

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Wa ter Resource............................................................

Surface Water...........................................................
Ground Water............................................................

Wa ter Use...............................................................

Water Budget................................ -; . . . . . . . . . . . . . . . . .. . . . . . . . . .
Water Qual i ty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sa 1 t Budget................ 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Agricultural Systems and Practices........................................

Land Resource............................................ 0 . . . . . . . . . . . . . . . .

Soil Survey and Land Classification.....................................

Erosion and Sediment.... 0.... 0............... 0 00..... 0..................
Biotic Resources................ 0...........:.......................00....

Fisheries............... 0....... 0............. 0....................... o'
Wi 1 dl i fe. . . . . . 0 . . . . . 0 . . 0 0 0 . . . . 0 . . . . . . . . . . . . . . . . . 0 . . . . . 0 0 . . . . . . . . . . . . 0 . . .
Vegetati on. . . . . . . . . . . . . . . . . . . . 0 . 0 . . . . . . . . . . . . 0 . 0 . . . . . . . . . . . . . . . . . .. 0 . 0 . .

Recreat; on Resources..................................................... 0
Social and Economic Characteristics...........................................

Population.. 0 0.............. 0.... 0............... 0......... 0.............. 0 0
Cultural, Social and Economic Factors.......................................

Emp 1 oyment. . . . . . . . . . . . . 0 . . . . . . . 0 . . . . . . . . . . . . . . . . . . . 0 . . . . . . . . . 0 . . . . . . . 0 . . . . . .
Historic and Archeologic....................................................

PROBLEMS AND NEEDS..... 0 . 0 . . . . . . 0 . . . 0 . . 0 . ~ . . . . . 0 . 0 0 . . . . . . . . 0 . . . . . 0 . o. . . . . . . . . . 36
Problems and Needs Associated With Salt Loading............................. 36
Sources and Kinds of Salts.................................................. 37

Amounts of Sa 1 ts. . . . . . . . . . . . . . 0 . . . . . . . . . . . . . . . . 0 . . . . . . . . . . . 0 . . . . 0 . . . . 0 . . . . . . 43
Control Potential.......... 0...... 0.....0.. 0.......0........................ 43
Onfarm............. .............................. .,........................ 43
Off-Farm...................................... .......0.................... 44
Problems and Needs Associated With Erosion and Sedimentation................ 46
Treatment Opportunities for Erosion Problems................................ 48
Problems and Needs Associated With Water Resource........................... 49

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