WSP08883

• File Number: 8273.600.20
• Description: Colorado River Basin Salinity Control - Federal Agencies - USDA
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 4/1/1996
• Title: Grand Valley Salinity Project 1995 Annual Monitoring and Evaluation Report
• Water Supply Pro - Doc Type: Annual Report

~

N
f',)
-.J
0)

United states Department of Agriculture
Natural Resources Conservation Service
Grand Junction, Colorado
April 1996

TABLE OP CONTENTS

Page
I. INTRODUCTION

A. Overview oooo.......................................................................... 1
B. Project Location ............................... 1
C. Salinity In The Grand Valley................... 3
D. Climatic Conditions ............................ 3
E. Objectives Of The M&E Program .................. 3
F.. CRSC Program Status ........................................................ 3

II.HYDROSALINITY MONITORING AND EVALUATION

A. Setting ................................................................................ 4
a. Irrigation Delivery Systems ................. 4
b. Monitoring site Description ................. 4
c. 1995 Irrigation Monitoring ............... 5
B. Summary Of Stream Gauging Data ................. 5
C. Irrigation Monitoring And Evaluation ........... 6
a. summary Of The Monitoring site Data.......... 6
b. summary Of Field Evaluations ................ 7
c. Summary Of Water Budget, Deep Percolation
And Application Efficiency............... 8
Water Budget .......................................................... 8
Deep Percolation ......................... 9
Application Efficiency................... 11
d. Surge And Conventional Irrigation Comparison. 11
e. Trends ............................................................................ 11
Irrigation Trends ........................ 11
Salinity Trends .......................... 14
f. Infiltration Estimates ...................... 19

D. Salt Budgets ...................................................................... 20
a. Salt Contribution ........................... 20
b. Reduction In Deep Percolation And Seepage ... '20

E. Recommendations ................................. 21

III. WILDLIFE MONITORING AND EVALUATION

A. Introduction ................................... 22
B. Setting ........................................ 22
C. Methodology .................................... 23
D. .Tracking ................... ... . . . . . . . . . . . . . . . . . . 25
E. Problems ....................................... 27
F. Recommendations ................................ 27

IV. ECONOMIC MONITORING AND EVALUATION
A. Setting & Methodology........................... 28
B. Summary And Recommendations .................... 28

i