Willow Creek Dam () is a dam in

Lewis and Clark County, Montana Lewis and Clark County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 70,973. Its county seat is Helena, the state capital. The numerical designation for Lewis and Clark County (used in the issuance ...

. The earthen dam was originally constructed between 1907 and 1911 by 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 ...

, then modified and reinforced several times since. With a height of and long at its crest, it impounds Willow Creek for irrigation storage and flood control, part of the Bureau's larger Sun River Project. The dam is owned and operated by the Bureau. The reservoir it creates, Willow Creek Reservoir, has a water surface of , another of surrounding land, about of shoreline, and a maximum capacity of . Recreation includes fishing (for rainbow trout and kokanee salmon), camping, hunting, boating, and hiking.

References

{{Authority control Dams in Montana Reservoirs in Montana United States Bureau of Reclamation dams Buildings and structures in Lewis and Clark County, Montana Dams completed in 1911 Rivers of Lewis and Clark County, Montana 1911 establishments in Montana