Cortney Dam is an earth dam located in Fall River County, South Dakota, built in 1999. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 766 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 Cortney Dam
The primary purpose of Cortney 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 Usda Fs (federal). It impounds the Cortney Creek.
The dam stands 20 feet tall and stretches 766 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 57 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1999, the structure is 27 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. The most recent inspection on record was 08/28/2001. That was over 25 years ago.
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Location
| State | South Dakota |
| County | Fall River |
| River/Stream | Cortney Creek |
| Coordinates | 43.29174, -103.03204 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 766 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 57 acre-ft |
| Max Storage | 57 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 555 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Usda Fs |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/28/2001 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02486 |
| Federal ID | SD02486 |
| More Info | State Dam Safety Program |