Historic Columbia River Highway
The Dalles Lock and Dam, OR

The Dalles Dam is two miles east of the city of The Dalles, Oregon. The dam extends 1.5 miles from the Oregon shore to the navigation lock on the Washington shore.

Because the boundary between the two states follows the old river channel, The Dalles Dam project is almost entirely in the state of Washington. The project consists of a navigation lock, spillway, powerhouse, and fish passage facilities.

Various recreational facilities are provided along Lake Celilo, the 24-mile-long impoundment behind the dam.