WSP00392

• File Number: 8276.150
• Description: Grand Valley Unit-Colorado River Basin Salinity Control Project
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 4/1/1992
• Title: 1991 Annual Report: Grand Valley Salinity Control Project Monitoring and Evaluation Program
• Water Supply Pro - Doc Type: Annual Report

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TABLE OF CONTENTS

page

I. INTRODUCTION

1. overview .............................................. 1
2. Project Location ...................................... 1
3. Salinity In The Grand Valley.......................... 3

4. Climatic Conditions................................... 3
5. Objectives Of The M&E Program ......................... 4

6. CRSC Program status ................................... 4

II.HYDROSALINITY MONITORING AND EVALUATION

1. setting ............................................... 6
a. Irrigation Delivery systems ........................ 6
b. Monitoring site Description ........................ 6

Overview ........................................ 6
1991 Irrigation Monitoring ...................... 8
2. Summary Of Stream Gauging Data ........................ 9
3. Irrigation Monitoring And Evaluation .................. 9
a. Summary Of The Monitoring Site Data................. 9
b. Summary Of Field Evaluations ....................... 12
c. Summary Of Water Budget, Deep Percolation
And Application Efficiency...................... 13

Water Budget .................................... 13
Deep Percolation ................................ 15
Application Efficiency.......................... 19
d. Surge And conventional Irrigation Comparison ....... 20

e. Trends............................................. 22
Irrigation Trends ............................... 22
Salinity Trends ................................. 22
f. Irrigation Adequacies At Sites ..................... 24
g. Infiltration Estimates ............................. 25

4. Salt Budgets.......................................... 27
a. Salt Contribution .................................. 27
b. Reduction In Deep Percolation And Seepage .......... 27
c. Reduction In Salt Loading .......................... 29
5. Recommendations ....................................... 29

III. WILDLIFE MONITORING AND EVALUATION

1. Introduction........................................ 32
2. Methodology ......................................... 33
3. Results ............................................. 33
4. Planning And Tracking ............................... 37
5. Recommendation ........................... '. . . . . . . . . . . 38
IV. ECONOMIC MONITORING AND EVALUATION

1. Introduction........................................ 39
2. Background And Potential Effects And Impacts For FY 1991 40
3. Summary And Recommendations ......................... 40
4. Problems To Be Addressed ............................ 40

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