Doney Lake Dam is an earth dam located in Powell County, Montana, built in 1946. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 285 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Doney Lake Dam
The primary purpose of Doney Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by State of Montana, D.o.c. (state). It impounds the Willow Creek near Drummond.
The dam stands 18 feet tall and stretches 285 feet across, and has a maximum storage capacity of 150 acre-feet. Completed in 1946, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Montana |
| County | Powell |
| Nearest City | Drummond |
| River/Stream | Willow Creek |
| Coordinates | 46.44804, -112.95170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 285 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 120 acre-ft |
| Max Discharge | 140 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | State of Montana, D.o.c. |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01235 |
| Federal ID | MT01235 |
| More Info | State Dam Safety Program |