Lake Edwin Johnson Dam
Key Takeaway
Lake Edwin Johnson Dam is classified as significant hazard in South Carolina. It was completed in 1942 and is 84 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 36 ft (taller than 88.9% in SC) |
| Max Storage | 570 acre-ft |
| Normal Storage | 420 acre-ft |
| Surface Area | 38 acres |
| Year Completed | 1942 (84 years old) |
| NID ID | SC00740 |
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
SC DEPARTMENT OF NATURAL RESOURCES;SC DEPARTMENT OF PARKS RECREATION AND TOURISM
State Government
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Lake Edwin Johnson Dam?
Lake Edwin Johnson 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 Lake Edwin Johnson Dam?
Lake Edwin Johnson Dam is owned by SC DEPARTMENT OF NATURAL RESOURCES;SC DEPARTMENT OF PARKS RECREATION AND TOURISM (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Edwin Johnson Dam built?
Lake Edwin Johnson Dam was completed in 1942, making it 84 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 Lake Edwin Johnson Dam?
Lake Edwin Johnson 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 Lake Edwin Johnson Dam?
Lake Edwin Johnson Dam has a dam height of 36 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 Lake Edwin Johnson Dam last inspected?
Lake Edwin Johnson Dam was last inspected on December 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.