St. Clairsville Reservoir No. 1 Dam
Key Takeaway
St. Clairsville Reservoir No. 1 Dam 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 | 36 ft (taller than 76% in OH) |
| Dam Length | 285 ft |
| Dam Type | Earth |
| Max Storage | 346 acre-ft |
| Normal Storage | 158 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,479 cfs |
| Year Completed | 1929 (97 years old) |
| NID ID | OH00793 |
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 St. Clairsville
Local Government
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Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of St. Clairsville Reservoir No. 1 Dam?
St. Clairsville Reservoir No. 1 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 St. Clairsville Reservoir No. 1 Dam?
St. Clairsville Reservoir No. 1 Dam is owned by City of St. Clairsville (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was St. Clairsville Reservoir No. 1 Dam built?
St. Clairsville Reservoir No. 1 Dam 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 St. Clairsville Reservoir No. 1 Dam?
St. Clairsville Reservoir No. 1 Dam 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 St. Clairsville Reservoir No. 1 Dam?
St. Clairsville Reservoir No. 1 Dam has a dam height of 36 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 St. Clairsville Reservoir No. 1 Dam last inspected?
St. Clairsville Reservoir No. 1 Dam was last inspected on October 11, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.