Primrose is an earth dam located in Sheridan County, Montana, built in 1941. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 450 ft long, taller than 80% 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 Primrose
The primary purpose of Primrose 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 Emanuel F States (private). It impounds the Tr-redstone Creek near Archer.
The dam stands 35 feet tall and stretches 450 feet across, and has a maximum storage capacity of 179 acre-feet. Completed in 1941, 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.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Montana |
| County | Sheridan |
| Nearest City | Archer |
| River/Stream | Tr-redstone Creek |
| Coordinates | 48.78304, -104.96542 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 450 ft |
| Year Completed | 1941 (85 years old) |
Storage & Hydraulics
| NID Storage | 179 acre-ft |
| Max Storage | 179 acre-ft |
| Normal Storage | 65 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Emanuel F States |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02627 |
| Federal ID | MT02627 |
| More Info | State Dam Safety Program |