Cooper-adams #5 is an earth dam located in Fergus County, Montana, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 13 ft13 ft tall and 685 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 Cooper-adams #5
The primary purpose of Cooper-adams #5 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Charles W. Owen (private). It impounds the Tr-bear Creek near Mosby.
The dam stands 13 feet tall and stretches 685 feet across, creates a reservoir covering 59 acres, has a maximum storage capacity of 470 acre-feet, and collects water from a drainage area of 80 square miles. Completed in 1950, 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 | Fergus |
| Nearest City | Mosby |
| River/Stream | Tr-bear Creek |
| Coordinates | 47.27230, -108.68970 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 685 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 470 acre-ft |
| Max Storage | 470 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 80 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Charles W. Owen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03259 |
| Federal ID | MT03259 |
| More Info | State Dam Safety Program |