Little Goose Lock and Dam was authorized by the River and Harbor Act of 1945. The project includes a dam, a navigation lock, power plant, fish ladder and associated facilities. It provides navigation, hydropower, fish and wildlife habitat, recreation and incidental irrigation. The dam, located on the Snake River, is 3,200 feet long with an effective height of about 100 feet. It is a concrete gravity dam with an earthfill abutment embankment.

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