Michael J. Kirwan Dam
Key Takeaway
Michael J. Kirwan Dam is classified as high hazard in Ohio. It was completed in 1966 and is 60 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 Length | 9,900 ft |
| Dam Type | Earth |
| Max Storage | 124.0K acre-ft |
| Normal Storage | 56.7K acre-ft |
| Surface Area | 2,650 acres |
| Drainage Area | 81 sq mi |
| Max Discharge | 38,500 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | OH00030 |
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
USACE - Pittsburgh District
Federal Government
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High Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Michael J. Kirwan Dam?
Michael J. Kirwan 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 Michael J. Kirwan Dam?
Michael J. Kirwan Dam is owned by USACE - Pittsburgh District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Michael J. Kirwan Dam built?
Michael J. Kirwan Dam was completed in 1966, making it 60 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 Michael J. Kirwan Dam?
Michael J. Kirwan Dam serves the following purposes: Flood Risk Reduction, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Michael J. Kirwan Dam last inspected?
Michael J. Kirwan Dam was last inspected on May 4, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.