Lake Wallula State Park is located in northeastern Oregon and southeastern Washington. It is located at the site of the McNary Dam and offers hiking, mountain biking, swimming, boating, fishing, canoeing, kayaking and camping.
One mile east of Umatilla, OR, on Highway 730, and take the McNary Dam Road.
http://www.tripleblaze.com/trail.php?c=3&i=6137