Bomber is an earth dam located in Valley County, Montana, built in 1953. It carries a Low hazard potential classification.
Dam profile
NID height · 13 ft13 ft tall and 2,199 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Bomber
The primary purpose of Bomber is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Whitmayer Grazing Association (private). It impounds the Hay Coulee near Nashua.
The dam stands 13 feet tall and stretches 2,199 feet across, and has a maximum storage capacity of 600 acre-feet. Completed in 1953, 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 | Valley |
| Nearest City | Nashua |
| River/Stream | Hay Coulee |
| Coordinates | 47.91630, -106.80610 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 2,199 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 600 acre-ft |
| Max Storage | 600 acre-ft |
| Normal Storage | 199 acre-ft |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Whitmayer Grazing Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00673 |
| Federal ID | MT00673 |
| More Info | State Dam Safety Program |