Antares is an earth dam located in Judith Basin County, Montana, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 300 ft long, taller than 68% 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 Antares
The primary purpose of Antares is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Anna Mae Hill (private). It impounds the Tr-byrne Creek.
The dam stands 30 feet tall and stretches 300 feet across, has a maximum storage capacity of 92 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1954, 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 | Judith Basin |
| Nearest City | None |
| River/Stream | Tr-byrne Creek |
| Coordinates | 47.31932, -110.55191 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 300 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 92 acre-ft |
| Max Storage | 92 acre-ft |
| Normal Storage | 60 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 70 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Anna Mae Hill |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01270 |
| Federal ID | MT01270 |
| More Info | State Dam Safety Program |