McNary Lock and Dam

McNary Lock and Dam was authorized by the River and Harbor Act of 1945. The project includes a powerhouse, navigation lock, two fish ladders, a removable spillway weir and a juvenile fish bypass facility. It provides navigation, hydropower, recreation and incidental irrigation. The dam, located on the Columbia River, is 7,365 feet long, rising approximately 183 feet above the streambed. It is a concrete gravity type dam, with an earthfill embankment section.

Lake Wallula, the project’s reservoir, offers a variety of recreation opportunities such as fishing, swimming, picnicking, boating, hunting, hiking and camping.

Contact Us

McNary Lock and Dam
82790 Devore Road
PO Box 1230
Umatilla, OR 97882-1230
Phone: 541-922-2252
Tri-Rivers Natural Resources Management-
McNary Office
PO Box 1230
Umatilla, OR 97882
Phone: 541-922-2268
(Manages from McNary Dam to Hwy 12 Bridge)