Clark (prairie) is an earth dam located in Prairie County, Montana, built in 1938. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 63 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 Clark (prairie)
The primary purpose of Clark (prairie) 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 Morast (private). It impounds the South Fork Cherry Creek near Glendive.
The dam stands 30 feet tall and stretches 63 feet across, and has a maximum storage capacity of 540 acre-feet. Completed in 1938, 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 | Prairie |
| Nearest City | Glendive |
| River/Stream | South Fork Cherry Creek |
| Coordinates | 46.88770, -105.70340 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 63 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 540 acre-ft |
| Max Storage | 540 acre-ft |
| Normal Storage | 352 acre-ft |
| Max Discharge | 1,500 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Robert Morast |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00664 |
| Federal ID | MT00664 |
| More Info | State Dam Safety Program |