Petranek Reservoir is an earth dam located in Fergus County, Montana, built in 1937. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 584 ft long, taller than 78% 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 Petranek Reservoir
The primary purpose of Petranek 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 David H. & Barbara Petrenek (private). It impounds the Tr-armells Creek.
The dam stands 34 feet tall and stretches 584 feet across, and has a maximum storage capacity of 125 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.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Montana |
| County | Fergus |
| Nearest City | None |
| River/Stream | Tr-armells Creek |
| Coordinates | 47.46110, -109.09770 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 584 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 120 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | David H. & Barbara Petrenek |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01032 |
| Federal ID | MT01032 |
| More Info | State Dam Safety Program |