Sebastian Lake Dam
Key Takeaway
Sebastian Lake Dam is classified as high hazard in Arkansas. It was completed in 1963 and is 63 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 38 ft (taller than 72.9% in AR) |
| Dam Length | 890 ft |
| Dam Type | Gravity |
| Max Storage | 685 acre-ft |
| Normal Storage | 531 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,357 cfs |
| Year Completed | 1963 (63 years old) |
| NID ID | AR00934 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
SEBASTIAN LAKE RECREATION ASSOCIATION
Private
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High Hazard 53 ftFrequently Asked Questions
What is the hazard classification of Sebastian Lake Dam?
Sebastian Lake Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Sebastian Lake Dam?
Sebastian Lake Dam is owned by SEBASTIAN LAKE RECREATION ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sebastian Lake Dam built?
Sebastian Lake Dam was completed in 1963, making it 63 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 Sebastian Lake Dam?
Sebastian Lake 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 Sebastian Lake Dam?
Sebastian Lake Dam has a dam height of 38 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 Sebastian Lake Dam last inspected?
Sebastian Lake Dam was last inspected on June 6, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.