Upper Leaf River Structure 9 Dam
Key Takeaway
Upper Leaf River Structure 9 Dam is classified as high hazard in Mississippi. It was completed in 1976 and is 50 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 | 34 ft (taller than 94.6% in MS) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 201 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,311 cfs |
| Year Completed | 1976 (50 years old) |
| NID ID | MS02784 |
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
UPPER LEAF RIVER WATER MANAGEMENT DISTRICT
Local Government
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What is the hazard classification of Upper Leaf River Structure 9 Dam?
Upper Leaf River Structure 9 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 Leaf River Structure 9 Dam?
Upper Leaf River Structure 9 Dam is owned by UPPER LEAF RIVER WATER MANAGEMENT DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Leaf River Structure 9 Dam built?
Upper Leaf River Structure 9 Dam was completed in 1976, making it 50 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 Leaf River Structure 9 Dam?
Upper Leaf River Structure 9 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 Leaf River Structure 9 Dam?
Upper Leaf River Structure 9 Dam has a dam height of 34 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 Leaf River Structure 9 Dam last inspected?
Upper Leaf River Structure 9 Dam was last inspected on March 10, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.