WSP08978

• File Number: 8276.110
• Description: Grand Valley Unit-Colorado River Basin Salinity Control Project
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 10/1/1980
• Title: Monitoring Plan: Stage One Development - Grand Valley Unit
• Water Supply Pro - Doc Type: Report/Study

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Foreword

This monitoring plan has been developed as a guide for the acquisition and

analysis of data to determine the effects of construction of Stage One of the

Grand Valley Unit. The results will be used by the Secretary of the Interior to

assess the effectiveness of the Stage One development in preventing salinity

from entering the Colorado River. The Secretary's findings will form the basis

for recommendations to the Congress for further construction on the Grand Valley

Unit. Amendatory legislation is now pending in Congress which if enacted would

change the authorization for Grand Valley Unit to include wildlife mitigation

and the option of using pipe instead of lining for laterals. The legislation

may also change criteria for future construction beyond Stage One. It is not

expected that any changes will be required in the monitoring plan as a result of

the legislation.

Prime responsibility for the monitoring studies will be vested in the

Projects Manager, Water and Power Resources Service, Grand Junction, Colorado.

Other Federal and State of Colorado agencies will participate.

Coordination of water quality monitoring will be accomplished through the

Grand Valley Salinity Coordinating Committee (GVSCC). The GVSCC has concurred

with the data used in this report, and has decided that any attempt to separate

On-Farm effects from effects of Water Systems Improvement would not be feasible

as part of this program. The GVSCC has also concurred that partitioning of the

different portions of the salinity reduction program should not be a requirement

for continued funding of those portions of the program. On-Farm monitoring will

be conducted through a cooperative arrangement between the Water and Power

Resources Service, the Soil Conservation Service, the Agricultural Stabilization

and Conservation Service, the USDA. Science and Education Administration-

Agricultural Research, and Colorado State University.
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