Helen B
Helen B is an earth dam located in Carter County, Montana, built in 1966. It carries a Low hazard potential classification.
About Helen B
The primary purpose of Helen B is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Eunice Burch (private). It impounds the Tr-cow Creek near Marmarth North Dakota.
The dam stands 81 feet tall and stretches 300 feet across, has a maximum storage capacity of 123 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1966, the structure is well into its service life at over 50 years old.
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. The most recent inspection on record was 01/01/1968. That was over 58 years ago.
At 81 feet, this dam is taller than 97% of all dams in the United States.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Carter |
| Nearest City | Marmarth North Dakota |
| River/Stream | Tr-cow Creek |
| Coordinates | 45.32130, -104.67460 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 81 ft |
| Dam Height | 81 ft |
| Dam Length | 300 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 123 acre-ft |
| Max Storage | 123 acre-ft |
| Normal Storage | 58 acre-ft |
| Drainage Area | 5 sq mi |
| Max Discharge | 1,025 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | EUNICE BURCH |
| Owner Type | Private |
| Hazard Classification | Low |
| Last Inspection | 01/01/1968 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00619 |
| Federal ID | MT00619 |
| More Info | State Dam Safety Program |