Robinson is an earth dam located in Phillips County, Montana, built in 1945. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 600 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 Robinson
The primary purpose of Robinson 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 State of Montana, D.n.r.c., T.l.m.d. (state). It impounds the Tr-alkali Creek near Malta.
The dam stands 30 feet tall and stretches 600 feet across, and has a maximum storage capacity of 127 acre-feet. Completed in 1945, the structure is well-established, with more than 75 years of service.
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 | Phillips |
| Nearest City | Malta |
| River/Stream | Tr-alkali Creek |
| Coordinates | 48.17880, -107.86070 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 600 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 127 acre-ft |
| Max Storage | 127 acre-ft |
| Normal Storage | 87 acre-ft |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | State of Montana, D.n.r.c., T.l.m.d. |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02521 |
| Federal ID | MT02521 |
| More Info | State Dam Safety Program |