Mann Creek Dam (National ID # ID00285) is a dam in

Washington County, Idaho Washington County is a county in the U.S. state of Idaho. As of the 2010 census, the population was 10,198. The county seat and largest city is Weiser, with over half of the county's population. The county was established in 1879 when Idaho w ...

, in the western part of the state, a few miles north-northeast of the town of Weiser. The earthen dam was an irrigation project of the

United States Bureau of Reclamation The Bureau of Reclamation, and formerly the United States Reclamation Service, is a federal agency under the U.S. Department of the Interior, which oversees water resource management, specifically as it applies to the oversight and opera ...

. Completed in 1967, the dam impounds Mann Creek with a height of above bedrock, and a length of along its crest. The dam is operated by the local Mann Creek Irrigation District. Mann Creek Reservoir has a surface area of at an elevation of . At closure it had a maximum capacity of but siltation reduced that number to by 1992. The western side of the lake is the location of the former Mann Creek State Park. Boating and fishing are the main recreational activities.

References

{{authority control Dams in Idaho Reservoirs in Idaho United States Bureau of Reclamation dams Buildings and structures in Washington County, Idaho Earth-filled dams Dams completed in 1967 1967 establishments in Idaho