The Geomorphic Response of Rivers to Dams: Geomorphic Effects of Dams on Rivers: A tutorial ...continued.

Back to the PEP Index .:. Other presentations included in this collection

Effects Presenter: Gordon Grant
Length: 5 Parts

View: Part 1 | Part 2 | Part 3 | Part 4 | Part 5

       Topics:

       Part 1

Introduction

How do we bring hydrologic and sediment transport effects together?

Daily mean discharge at Estacada 1938 to 1982

Calculating T*

Sediment supply downstream from a dam

Calculating S*

      Part 2

An analytical framework for predicting downstream responses

Flaming Gorge Dam

Downstream Changes in Flow and Sediment Flux

Green River- T* and S*

Channel Aggradation Graph

Channel narrowing on the Green River

Glen Canyon Dam||Colorado River Sediment Supply Graph

Colorado River- S*

Channel Aggredation

Substantial bed degradation in Glen Canyon

...but little bank erosion in Glen Canyon- 1952-1984

A Map Further Downstream

       Part 3

Deschutes River- Oregon

Water Map

Lower Deschutes River Sediment Budget

Deschutes River- S*

Channel Aggredation Graph

Floods…the Outhouse Flood

Harris Island Cross Section 7

Green- Deschutes- Colorado River Graph

Geologically-controlled landforms and events

Valley scale response to changing sediment supply

       Part 4

Mountain Streams- Lowland Rivers

Sediment dynamics vary with scale and environment

Cascades Map||Mean Monthly Discharge

High and Western Cascade Graph

High Cascades

Geology Photo

Western Cascades

High and Western Cascades

McKenzie Watershed

High Cascades(spring fed)

Western Cascades

        Part 5

USGS Stream Gages

McKenzie River- Pre Dam

High Cascade Classification Chart

Willamette River Discharge (Albany- Oregon)

Flow duration curves-Willamette River

High and Western Cascades

A Summary of Sorts