Lower Granite Lock and Dam marks 50 years on the Snake River

The Walla Walla District's Lower Granite Lock and Dam, located on the Snake River in southeastern Washington, includes a dam, navigation lock, powerhouse, fish ladder, and associated facilities. The project provides hydropower, navigation, flood risk management, fish and wildlife habitat, recreation, and incidental irrigation. It is one of 75 multi-purpose power-producing projects within the USACE inventory and spans approximately 3,200 feet and has an effective height of 100 feet. It is a concrete gravity structure with an earthfill right abutment embankment.