Hillsboro Reservoir No. 1 Dam
Key Takeaway
Hillsboro Reservoir No. 1 Dam is classified as significant hazard in Ohio. It was completed in 1945 and is 81 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 42 ft (taller than 85.4% in OH) |
| Dam Length | 682 ft |
| Dam Type | Earth |
| Max Storage | 388 acre-ft |
| Normal Storage | 275 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,871 cfs |
| Year Completed | 1945 (81 years old) |
| NID ID | OH00304 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Hillsboro
Local Government
Nearby Dams
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Low Hazard 28 ftNew Vienna Wastewater Treatment Lagoons
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Significant Hazard 14 ftCedar Hill Campground Lake Dam
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Significant Hazard 30 ftSnow Hill INC. Lake Dam
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Significant Hazard 24 ftRocky Fork Lake Dam
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High Hazard 74 ftFrequently Asked Questions
What is the hazard classification of Hillsboro Reservoir No. 1 Dam?
Hillsboro Reservoir No. 1 Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hillsboro Reservoir No. 1 Dam?
Hillsboro Reservoir No. 1 Dam is owned by City of Hillsboro (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hillsboro Reservoir No. 1 Dam built?
Hillsboro Reservoir No. 1 Dam was completed in 1945, making it 81 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 Hillsboro Reservoir No. 1 Dam?
Hillsboro Reservoir No. 1 Dam serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hillsboro Reservoir No. 1 Dam?
Hillsboro Reservoir No. 1 Dam has a dam height of 42 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 Hillsboro Reservoir No. 1 Dam last inspected?
Hillsboro Reservoir No. 1 Dam was last inspected on April 11, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.