Semmes Lake
Key Takeaway
Semmes Lake is classified as significant hazard in South Carolina. It was completed in 1940 and is 86 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 52.9% in SC) |
| Dam Length | 970 ft |
| Dam Type | Earth |
| Max Storage | 641 acre-ft |
| Normal Storage | 329 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 800 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | SC00225 |
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
Fort Jackson
Federal Government
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High Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Semmes Lake?
Semmes Lake 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 Semmes Lake?
Semmes Lake is owned by Fort Jackson (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Semmes Lake built?
Semmes Lake was completed in 1940, making it 86 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 Semmes Lake?
Semmes Lake 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 Semmes Lake?
Semmes Lake has a dam height of 22 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 Semmes Lake last inspected?
Semmes Lake was last inspected on March 24, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.