Yonce Dam
Key Takeaway
Yonce Dam is classified as significant hazard in South Carolina. It was completed in 1910 and is 116 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 26 ft (taller than 67% in SC) |
| Max Storage | 200 acre-ft |
| Normal Storage | 144 acre-ft |
| Surface Area | 63 acres |
| Year Completed | 1910 (116 years old) |
| NID ID | SC01141 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
JOHN PRESTON YONCE JR;JOHN PRESTON YONCE SR
Private
Nearby Dams
Bush Pond Dam
Edgefield, SC
Low Hazard 21 ftCharlie Rauton Dam
Edgefield, SC
Significant Hazard 25 ftGuy Rutland Pond Dam
Edgefield, SC
Significant Hazard 24 ftScott Pond Dam
Edgefield, SC
Significant Hazard 19 ftJ W Yonce Pond Dam
Edgefield, SC
High Hazard 19 ftJames T Childers Dam
Saluda, SC
Significant Hazard 20 ftClark Dubose Pond Dam
Edgefield, SC
Low Hazard 28 ftJ O Clark Dam
Edgefield, SC
Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Yonce Dam?
Yonce Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Yonce Dam?
Yonce Dam is owned by JOHN PRESTON YONCE JR;JOHN PRESTON YONCE SR (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Yonce Dam built?
Yonce Dam was completed in 1910, making it 116 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Yonce Dam?
Yonce Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Yonce Dam?
Yonce Dam has a dam height of 26 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Yonce Dam last inspected?
Yonce Dam was last inspected on June 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.