Number Twenty Reservoir
Number Twenty Reservoir is an earth dam located in Phillips County, Montana, built in 1950. It carries a Low hazard potential classification.
About Number Twenty Reservoir
The primary purpose of Number Twenty Reservoir 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 R Ereaux, Et Al (private). It impounds the Tr-second Creek.
The dam stands 10 feet tall and stretches 300 feet across, and has a maximum storage capacity of 132 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 | Tr-second Creek |
| Coordinates | 47.78890, -107.79780 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 132 acre-ft |
| Max Storage | 132 acre-ft |
| Normal Storage | 17 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | R EREAUX, ET AL |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02685 |
| Federal ID | MT02685 |
| More Info | State Dam Safety Program |