| Willow Creek Dam | |
| Location Map: | Montana#USA |
| Coordinates: | 47.5467°N -112.4308°W |
| Country: | United States |
| Location: | Lewis and Clark County, Montana |
| Purpose: | irrigation & flood control |
| Status: | Operational |
| Construction Began: | 1907 |
| Opening: | 1911 |
| Builder: | United States Bureau of Reclamation |
| Dam Crosses: | Willow Creek |
| Dam Height: | 93feet |
| Dam Length: | 650feet |
| Res Name: | Willow Creek Reservoir |
| Res Capacity Total: | 32400acre feet |
| Res Surface: | 1530acres |
| Res Elevation: | 1265m (4,150feet) |
Willow Creek Dam is a dam in Lewis and Clark County, Montana.
The earthen dam was originally constructed between 1907 and 1911 by the United States Bureau of Reclamation, 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.[1] 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 .[2] Recreation includes fishing (for rainbow trout and kokanee salmon), camping, hunting, boating, and hiking.