Cooper Dam is an earth dam located in McCook County, South Dakota, built in 1997. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 240 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 Cooper Dam
The primary purpose of Cooper Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Bill Cooper (private). It impounds the Tr-w. Fork Vermillion River.
The dam stands 21 feet tall and stretches 240 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 60 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1997, the structure is 29 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.
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Location
| State | South Dakota |
| County | McCook |
| River/Stream | Tr-w. Fork Vermillion River |
| Coordinates | 43.56068, -97.34476 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 240 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 945 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Bill Cooper |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02493 |
| Federal ID | SD02493 |
| More Info | State Dam Safety Program |