Graham Lake Dam Remedial Measures Project

by Adam N. Jones, Northrop, Devine & Tarbell, Inc, Portland, United States,
R. Craig Findlay, Northrop, Devine & Tarbell, Inc, Portland, United States,



Document Type: Proceeding Paper

Part of: Geotechnical Practice in Dam Rehabilitation

Abstract:

Graham Lake Dam consists of a 550-foot long earth embankment and an 80-foot long concrete spillway. Several concerns were identified during project inspections including limited spillway capacity, seepage at the toe of the embankment, stability problems associated with low shear strength of the clay foundation and the potential for liquefaction of the loose embankment fill. This paper discusses the evaluation, development and design of a comprehensive remedial measures program undertaken to address these concerns.

Subject Headings: Embankment dams | Soil strength | Soil liquefaction | Soil-structure interaction | Soil analysis | Shear strength | Structural design

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