Cotter
Cotter is an earth dam located in Phillips County, Montana, built in 1950. It carries a Low hazard potential classification.
About Cotter
The primary purpose of Cotter 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 M Cross Cattle Co (private). It impounds the First Creek.
The dam stands 20 feet tall and stretches 540 feet across, creates a reservoir covering 24 acres, and has a maximum storage capacity of 268 acre-feet. 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 | Phillips |
| Nearest City | None |
| River/Stream | First Creek |
| Coordinates | 47.89980, -107.85680 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 540 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 268 acre-ft |
| Max Storage | 268 acre-ft |
| Normal Storage | 137 acre-ft |
| Surface Area | 24 acres |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | M CROSS CATTLE CO |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01305 |
| Federal ID | MT01305 |
| More Info | State Dam Safety Program |