Hassett #3
Hassett #3 is an earth dam located in Petroleum County, Montana, built in 1958. It carries a Low hazard potential classification.
About Hassett #3
The primary purpose of Hassett #3 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Clinton R Hassett (private). It impounds the Tr-flatwillow Creek near Mosby.
The dam stands 30 feet tall and stretches 175 feet across, has a maximum storage capacity of 331 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1958, 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 | Petroleum |
| Nearest City | Mosby |
| River/Stream | Tr-flatwillow Creek |
| Coordinates | 46.91980, -108.19640 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 175 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 331 acre-ft |
| Max Storage | 331 acre-ft |
| Normal Storage | 131 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 420 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | CLINTON R HASSETT |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00136 |
| Federal ID | MT00136 |
| More Info | State Dam Safety Program |