Rocky
Rocky is an earth dam located in Phillips County, Montana, built in 1947. It carries a Low hazard potential classification.
About Rocky
The primary purpose of Rocky 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 Rocky Ridge Ranch Inc (private). It impounds the Tr-assiniboine Creek near Malta.
The dam stands 25 feet tall and stretches 150 feet across, and has a maximum storage capacity of 86 acre-feet. Completed in 1947, 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-assiniboine Creek |
| Coordinates | 48.61010, -108.25540 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 150 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 86 acre-ft |
| Max Storage | 86 acre-ft |
| Normal Storage | 38 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | ROCKY RIDGE RANCH INC |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02567 |
| Federal ID | MT02567 |
| More Info | State Dam Safety Program |