Youngstown Upground Reservoir
Key Takeaway
Youngstown Upground Reservoir is classified as high hazard in Ohio. It was completed in 1929 and is 97 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 | 29 ft (taller than 58% in OH) |
| Dam Length | 1,584 ft |
| Dam Type | Concrete |
| Max Storage | 101 acre-ft |
| Normal Storage | 96 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1929 (97 years old) |
| NID ID | OH03105 |
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
Mahoning Valley Sanitary District
Local Government
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Significant Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Youngstown Upground Reservoir?
Youngstown 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 Youngstown Upground Reservoir?
Youngstown Upground Reservoir is owned by Mahoning Valley Sanitary District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Youngstown Upground Reservoir built?
Youngstown Upground Reservoir was completed in 1929, making it 97 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 Youngstown Upground Reservoir?
Youngstown 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 Youngstown Upground Reservoir?
Youngstown Upground Reservoir has a dam height of 29 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 Youngstown Upground Reservoir last inspected?
Youngstown Upground Reservoir was last inspected on November 10, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.