Thompson, Frank
Thompson, Frank is an earth dam located in Lewis and Clark County, Montana, built in 1972. It carries a Low hazard potential classification.
About Thompson, Frank
The primary purpose of Thompson, Frank is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Frank Thompson (private). It impounds the Long Coulee near Hardy.
The dam stands 20 feet tall and stretches 300 feet across, and has a maximum storage capacity of 283 acre-feet. Completed in 1972, 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.
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Location
| State | Montana |
| County | Lewis and Clark |
| Nearest City | Hardy |
| River/Stream | Long Coulee |
| Coordinates | 47.26090, -112.08080 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 300 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 283 acre-ft |
| Max Storage | 283 acre-ft |
| Normal Storage | 97 acre-ft |
| Max Discharge | 1,150 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | FRANK THOMPSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00528 |
| Federal ID | MT00528 |
| More Info | State Dam Safety Program |