John Day Lock and Dam (Lake Umatilla), Columbia River, Oregon and Washington, foundation report.
Contributors: United States. Army. Corps of Engineers. Walla Walla District.
Publisher: U.S. Army Engineer District, Walla Walla, Corps of Engineers
Published: 1971
Place of publication: [Walla Walla, Wash.]
Language: eng
Subjects: Dams -- Foundations; John Day Lock and Dam (Or. and Wash.)
Other titles: Foundation report.
Notes: Cover title.

"January 1971."