Skip to Main Content
Book Chapter

Landslide at North Abutment of Lookout Point Dam, Oregon

By
Lloyd W. Staples
Lloyd W. Staples
(University of Oregon, Eugene, Oregon)
Search for other works by this author on:
Published:
January 01, 1957

Abstract

In the preparation of a trackway for a movable tail tower for pouring concrete for the spillway of the Lookout Point Dam, a trench 1500 feet long, 30 feet deep, and 100 feet wide was dug in a slope which shows signs of previous sliding. The waste material was placed on the downhill side of the cut. Following a period of exceptionally heavy rainfall the ground started to slump in two places on the hill. The lower slide was a short distance above the Southern Pacific railroad right of way and threatened the tracks. In an effort to control the slide the toe was cut away, with a resulting increase in slumping. Eventually the slide reached a point of equilibrium. The cause of the sliding is ascribed to overloading an already delicate state of balance followed by a period of excessive rainfall.

You do not currently have access to this article.

Figures & Tables

Contents

GSA Engineering Geology Case Histories

Engineering Geology Case Histories Number 1

Parker D. Trask
Parker D. Trask
Search for other works by this author on:
Geological Society of America
Volume
1
ISBN electronic:
9780813759265
Publication date:
January 01, 1957

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal