Armells Reservoir is an earth dam located in Fergus County, Montana, built in 1951. It carries a Low hazard potential classification.
Dam profile
NID height · 38 ft38 ft tall and 905 ft long, taller than 84% of U.S. dams with a recorded height. 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 Armells Reservoir
The primary purpose of Armells Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wytana Properties L.p. (private). It impounds the Armells Creek.
The dam stands 38 feet tall and stretches 905 feet across, creates a reservoir covering 40 acres, and has a maximum storage capacity of 1,340 acre-feet. Completed in 1951, the structure is well into its service life at over 50 years old.
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.
At 38 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Montana |
| County | Fergus |
| Nearest City | None |
| River/Stream | Armells Creek |
| Coordinates | 47.39570, -109.15730 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 905 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 1,340 acre-ft |
| Max Storage | 1,340 acre-ft |
| Normal Storage | 354 acre-ft |
| Surface Area | 40 acres |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Wytana Properties L.p. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01033 |
| Federal ID | MT01033 |
| More Info | State Dam Safety Program |