Six-Mile Dam
Key Takeaway
Six-Mile Dam is classified as high hazard in Ohio. It was completed in 1830 and is 196 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 | 28 ft (taller than 54.7% in OH) |
| Dam Length | 1,675 ft |
| Dam Type | Timber Crib |
| Max Storage | 2.8K acre-ft |
| Normal Storage | 696 acre-ft |
| Surface Area | 87 acres |
| Drainage Area | 1,512 sq mi |
| Max Discharge | 44,504 cfs |
| Year Completed | 1830 (196 years old) |
| NID ID | OH00583 |
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
ODNR, Division of Wildlife
State Government
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High Hazard 65 ftFrequently Asked Questions
What is the hazard classification of Six-Mile Dam?
Six-Mile 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 Six-Mile Dam?
Six-Mile Dam is owned by ODNR, Division of Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Six-Mile Dam built?
Six-Mile Dam was completed in 1830, making it 196 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 Six-Mile Dam?
Six-Mile 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 Six-Mile Dam?
Six-Mile Dam has a dam height of 28 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 Six-Mile Dam last inspected?
Six-Mile Dam was last inspected on October 10, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.