Mason is an earth dam located in Garfield County, Montana, built in 1937. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 300 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 Mason
The primary purpose of Mason 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 Lavern Mason (private). It impounds the Tr-frazier Creek.
The dam stands 10 feet tall and stretches 300 feet across, and has a maximum storage capacity of 62 acre-feet. Completed in 1937, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Garfield |
| Nearest City | None |
| River/Stream | Tr-frazier Creek |
| Coordinates | 47.44900, -106.77230 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 32 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Lavern Mason |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01010 |
| Federal ID | MT01010 |
| More Info | State Dam Safety Program |