Benson
Benson is an earth dam located in Beaverhead County, Montana, built in 1952. It carries a Low hazard potential classification.
About Benson
The primary purpose of Benson is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ronald A Benson (private). It impounds the Hoffman Gulch near Twin Bridges.
The dam stands 35 feet tall and stretches 150 feet across, has a maximum storage capacity of 107 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1952, 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.
At 35 feet, this dam is taller than 82% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Beaverhead |
| Nearest City | Twin Bridges |
| River/Stream | Hoffman Gulch |
| Coordinates | 45.16112, -112.48663 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 150 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 107 acre-ft |
| Max Storage | 107 acre-ft |
| Normal Storage | 30 acre-ft |
| Drainage Area | 3 sq mi |
| Max Discharge | 260 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | RONALD A BENSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00036 |
| Federal ID | MT00036 |
| More Info | State Dam Safety Program |