WSP01037

• File Number: 8277.400.200
• Description: Lower Virgin River Project
• State: NV
• Basin: Colorado Mainstem
• Date: 6/1/1977
• Title: The Virgin River Basin Study: A Regional Approach to Multiobjective Planning for Water and Related Resources
• Water Supply Pro - Doc Type: Report/Study

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TABLE OF CONTENTS (CONTINUED)

Chapter

Page

Nonagricultural Activity. . . .. . .. .. .. . . . .... . . . . . . .. .. . .. ... .. .. . .. . .. . . .. .. .25
Urban. . . . . ... . .. . .. . . .. . . .. . ... ... . . . . ... . ... . .. . .. . .. .. . . . .. .. . . .. . .. . ..26
Future Economic Development. . .. . .... . . . .. . . ... ... ... .. ..... .. . .. . ... ... . .26
Decision Makers. ... . . . . ... . .. . . ... . . ... . .... . .. . .. . .. .. . ... . . .. . .. . ... .. . .27
Organizations............................................................ .28
References............................................................... .29

IV APPLICATION OF HYDRO-QUALITY MODEL TO THE VIRGIN
RIVER BASIN. . .. . . .. . . . . . .. . . .. . .... . . ... . .. . . . . . .. .. .. . . . .. . .. . . .. .. . . .31

Introduction.. .. . ... . .. . . .. . . . . . . . . . . .... ... . . .. . .. .... . . .. . .. . . . .. . . .. . .. . .31
Application of Utah State River Model (USRM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
The Hydro-Salinity Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Application of Hydro-Salinity Modelto Virgin River Basin. . . . . . . . . . . . . . . . . . . . . . .31
Subbasin Development ...................................................31
Data Collection and Processing ............................................33
Calibration of Salinity Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Development of the Sediment Subroutine. .. . . . .. . .. . . . .. .. .. . .. .. . . . .. .. . . .33

Channel Erosion.. . . . . . .. . . . . . . . . . . .. . . .. . .. . . . .' . .... .. . .. . . . . .. . .. .35
Calibration.... ................................................... .36
Results of BSAMS Verification............................................ .36
Interfacing BSAMS with Allocation Model. ................................. .36
Management Studies with BSAMS ." . . ... . . . . . . . . ... .. . .. .. . .' . . . .. . .. . .. .39
Objectives . . . . . . . . . . . .39
Procedure. . . . . . . . . . . . . . . . . .. . .. . . . . . . . . .. . .. .39
Results of Management Study . . . . . . . . . . . . .41
Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . .41
References. .................... ........... .42

V

THE SWT APPROACH

............. .'45

The Research Objective and the Basin. . . . . .. . . . . . . .. .. . . . .. . . .. .. . . . 45
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Preliminary Discussion ofthe Method. .. .. . . . . .. . .. . . . . . .. . . . .. .. . .. . . .. . .. . 45
The Basic Water Allocation Model. . . . . . .. . . . . . . . . . . .. . .. . . . .. . .. . .. . . . .46
Model Modification for Price Responsiveness .. . . . . . . . . . . . . . . . . . . . . . . . . . 48
Water Quality Modeling. . .. . . .. . . . . . .. . . . .. .. . . . . . .. . . . . . .. .. . ..49
Results of the Annual Model. . . . . . . . . . . . . .. ..............50
Assessment of Annual Model Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Late Season Model. ........................ . . . . . . . . . . . . . . . .50
Parameterization of Objectives ............. . . . . . . . . . . . . . . . . . . . . . . . . . .51
Results from the Late Season Model. . . . . . .. . .. . . . .. . .. .' .. . . . .. . . . . . . . . . . . .52
Conclusion.. ............................. ........................ .52
References............................................................... .54

VI DISCUSSION AND DESCRIPTION OF PROPDEMM. ........................ .55

Introduction.............................................................. .55
The PROPDEMM II Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Basic Problems in Policy Formulation/Planning Methodology . . . . . . . . . . . . . . . . . . . .60
Data Collection and Evaluation ............................................61
Data Categorization ..................................................... .62
Identification of Relevant Interrelationships ................................ .62

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