Defiance Upground Reservoir
Key Takeaway
Defiance Upground Reservoir is classified as high hazard in Ohio. It was completed in 2007 and is 19 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 | 24 ft (taller than 39.8% in OH) |
| Dam Length | 7,800 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Drainage Area | 0 sq mi |
| Year Completed | 2007 (19 years old) |
| NID ID | OH03143 |
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
City of Defiance
Local Government
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What is the hazard classification of Defiance Upground Reservoir?
Defiance Upground Reservoir 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 Defiance Upground Reservoir?
Defiance Upground Reservoir is owned by City of Defiance (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Defiance Upground Reservoir built?
Defiance Upground Reservoir was completed in 2007, making it 19 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 Defiance Upground Reservoir?
Defiance Upground Reservoir serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Defiance Upground Reservoir?
Defiance Upground Reservoir has a dam height of 24 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 Defiance Upground Reservoir last inspected?
Defiance Upground Reservoir was last inspected on April 26, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.