Robert Johnson
Robert Johnson is an earth dam located in Richland County, Montana, built in 1937. It carries a Low hazard potential classification.
About Robert Johnson
The primary purpose of Robert Johnson is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Robert R Johnson (private). It impounds the Tr-north Fork First Hay Creek.
The dam stands 17 feet tall and stretches 350 feet across, has a maximum storage capacity of 83 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1937, 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 | Richland |
| Nearest City | None |
| River/Stream | Tr-north Fork First Hay Creek |
| Coordinates | 47.89350, -104.32330 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 350 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 60 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 300 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | ROBERT R JOHNSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02466 |
| Federal ID | MT02466 |
| More Info | State Dam Safety Program |