S-161
Key Takeaway
S-161 is classified as high hazard in Florida. It was completed in 1975 and is 51 years old. Its primary use is water supply. 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 | 20 ft (taller than 48.9% in FL) |
| Dam Length | 200 ft |
| Dam Type | Concrete |
| Max Storage | 11.0K acre-ft |
| Normal Storage | 6.1K acre-ft |
| Surface Area | 173 acres |
| Drainage Area | 192 sq mi |
| Max Discharge | 4,000 cfs |
| Year Completed | 1975 (51 years old) |
| NID ID | FL00640 |
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
SWFWMD
State Government
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Significant Hazard 17 ftFrequently Asked Questions
What is the hazard classification of S-161?
S-161 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 S-161?
S-161 is owned by SWFWMD (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was S-161 built?
S-161 was completed in 1975, making it 51 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 S-161?
S-161 serves the following purposes: Water Supply, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is S-161?
S-161 has a dam height of 20 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 S-161 last inspected?
S-161 was last inspected on May 19, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.