Upper Yockanookany WS Str 4 Dam
Key Takeaway
Upper Yockanookany WS Str 4 Dam is classified as high hazard in Mississippi. It was completed in 1979 and is 47 years old. Its primary use is flood risk reduction. 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 | 27 ft (taller than 84.9% in MS) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 96 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,416 cfs |
| Year Completed | 1979 (47 years old) |
| NID ID | MS02800 |
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
TOWN OF ACKERMAN
Local Government
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Upper Yockanookany WS Str 4 Dam?
Upper Yockanookany WS Str 4 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 Upper Yockanookany WS Str 4 Dam?
Upper Yockanookany WS Str 4 Dam is owned by TOWN OF ACKERMAN (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Yockanookany WS Str 4 Dam built?
Upper Yockanookany WS Str 4 Dam was completed in 1979, making it 47 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 Upper Yockanookany WS Str 4 Dam?
Upper Yockanookany WS Str 4 Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Yockanookany WS Str 4 Dam?
Upper Yockanookany WS Str 4 Dam has a dam height of 27 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 Upper Yockanookany WS Str 4 Dam last inspected?
Upper Yockanookany WS Str 4 Dam was last inspected on August 17, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.