Ernest Wallstein Dam is a gravity dam located in Carter County, Montana. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 36 ft36 ft tall and 1,097 ft long, taller than 82% 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 concrete gravity section and the water level is illustrative.
About Ernest Wallstein Dam
Ernest Wallstein Dam is a dam in Carter, Montana. The dam is owned by Doi BLM (federal). It impounds the Unnamed Drainage.
The dam stands 36 feet tall and stretches 1,097 feet across, creates a reservoir covering 54 acres, has a maximum storage capacity of 492 acre-feet, and collects water from a drainage area of 1 square miles.
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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 07/01/2013. That was over 13 years ago.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Montana |
| County | Carter |
| River/Stream | Unnamed Drainage |
| Coordinates | 45.82670, -104.07399 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 36 ft |
| Dam Length | 1,097 ft |
Storage & Hydraulics
| NID Storage | 492 acre-ft |
| Max Storage | 492 acre-ft |
| Normal Storage | 344 acre-ft |
| Surface Area | 54 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/01/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02239 |
| Federal ID | MT02239 |
| More Info | State Dam Safety Program |