Hacker Dam is an earth dam located in Madison County, Montana, built in 1953. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 330 ft long, taller than 78% of U.S. dams with a recorded height. 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 Hacker Dam
The primary purpose of Hacker Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Richard L Henderson (private). It impounds the Moore Creek near Ennis.
The dam stands 34 feet tall and stretches 330 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 45 acre-feet, and collects water from a drainage area of 27 square miles. 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. The most recent inspection on record was 07/20/1980. That was over 46 years ago.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Montana |
| County | Madison |
| Nearest City | Ennis |
| River/Stream | Moore Creek |
| Coordinates | 45.33560, -111.76960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 330 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 45 acre-ft |
| Max Storage | 45 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 27 sq mi |
| Max Discharge | 940 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Richard L Henderson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/20/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01276 |
| Federal ID | MT01276 |
| More Info | State Dam Safety Program |