Rocky Mountain High is an earth dam located in Toole County, Montana, built in 1900. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 200 ft long. 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 Rocky Mountain High
The primary purpose of Rocky Mountain High 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 Carl T Dahlen (private). It impounds the Tr-rocky Springs Coulee near Shelby.
The dam stands 20 feet tall and stretches 200 feet across, and has a maximum storage capacity of 568 acre-feet. Completed in 1900, the structure is over a century 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 | Toole |
| Nearest City | Shelby |
| River/Stream | Tr-rocky Springs Coulee |
| Coordinates | 48.72840, -112.02440 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 200 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 568 acre-ft |
| Max Storage | 568 acre-ft |
| Normal Storage | 71 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Carl T Dahlen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03642 |
| Federal ID | MT03642 |
| More Info | State Dam Safety Program |