WSP12287

• File Number: 8220.101.10.C
• Description: Glen Canyon Dam/Lake Powell
• State: AZ
• Basin: Colorado Mainstem
• Date: 9/1/1997
• Author: USDOI-GC Mon & Rsrch
• Title: Development of Monitoring and Research Programming for the Grand Canyon Monitoring and Research Center - Briefing Document - Adaptive management Work Group - Part 2 of 2
• Water Supply Pro - Doc Type: Project Overview

interpretation, as well as the first comprehensive transfer of information to stakeholders

regarding the potential impacts of differing Dam operations on ecosystems and associated

resources.

The Physical Resources Program

The physical resources program forms the basis for understanding impacts of dam

operations on other resources. Water and sediment are the two prinuuy environmental

attnbutes of concern in the physical resources area. Water and sediment are scientifically

linked to dam operations, and affect downstream river dynamics, either directly from dam

operations, or indirectly from the interaction of differential discharges from dam operations

with geomorphology and sediment and water flows entering from tributaries. This basic

dynamic ofvarlable flow and sediment regime in turn create the river dynamics that affect

resources and their attnbutes.

Monitoring and research efforts will concentrate on four aspects of these physical

resources as follows;

1.

Dam discharges and mainstem and tnbutary streamflow.

2.

Sediment flux, and processes, and distribution, and mainstem and eddy

interactions.

3. Interrelationship ofmainstem water and sediment and tributary inputs and

impacts.

4. Changes in Lake Mead Delta.

[Final Draft 3/17/97]

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