Howard Hanson Dam Right Abutment Monitoring
Location: Enumclaw, Washington
DEA worked with the U.S. Army Corps of Engineers Seattle District to capture digital elevation data for the reservoir behind Howard Hanson Dam. The scope of services included 3D terrestrial laser scans, marine-based laser scans, and multibeam hydrographic surveys. This project was commissioned in response to the discovery of a significant depression in an abutment on the dam. The data provided by DEA will assist the Corps in its investigation of what caused the depression and help prevent water seepage into the Green River Valley.