Cottonwood is an earth dam located in Fergus County, Montana, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 38 ft38 ft tall and 433 ft long, taller than 84% 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 Cottonwood
The primary purpose of Cottonwood 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 William J. Clark Et Al (private). It impounds the Tr-little Crooked Creek.
The dam stands 38 feet tall and stretches 433 feet across, and has a maximum storage capacity of 31 acre-feet. Completed in 1964, the structure is well into its service life at over 50 years 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.
At 38 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Montana |
| County | Fergus |
| Nearest City | None |
| River/Stream | Tr-little Crooked Creek |
| Coordinates | 47.39040, -108.44350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 433 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 31 acre-ft |
| Max Storage | 31 acre-ft |
| Normal Storage | 22 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | William J. Clark Et Al |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02590 |
| Federal ID | MT02590 |
| More Info | State Dam Safety Program |