Yonce Dam
Yonce Dam is a dam located in Edgefield County, South Carolina, built in 1910. It carries a Significant hazard potential classification and has a fair condition assessment.
About Yonce Dam
The primary purpose of Yonce Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by John Preston Yonce Jr;john Preston Yonce Sr (private). It impounds the Beech Creek.
The dam stands 26 feet tall, creates a reservoir covering 63 acres, and has a maximum storage capacity of 200 acre-feet. Completed in 1910, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/21/2022.
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Location
| State | South Carolina |
| County | Edgefield |
| River/Stream | Beech Creek |
| Coordinates | 33.83000, -81.72440 |
Physical Characteristics
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Year Completed | 1910 (116 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 144 acre-ft |
| Surface Area | 63 acres |
Ownership & Safety
| Purpose | Recreation |
| Owner | JOHN PRESTON YONCE JR;JOHN PRESTON YONCE SR |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/21/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | SCD00609 |
| Federal ID | SCD00609 |
| More Info | State Dam Safety Program |