San Toy Dam
Key Takeaway
San Toy Dam is classified as high hazard in Ohio. It was completed in 1916 and is 110 years old. Its primary use is recreation. 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 | 21 ft (taller than 31.1% in OH) |
| Dam Length | 325 ft |
| Dam Type | Earth |
| Max Storage | 70 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 433 cfs |
| Year Completed | 1916 (110 years old) |
| NID ID | OH00648 |
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
Evelyn D. Lanphere Irrevocable Trust
Private
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High Hazard 59 ftFrequently Asked Questions
What is the hazard classification of San Toy Dam?
San Toy 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 San Toy Dam?
San Toy Dam is owned by Evelyn D. Lanphere Irrevocable Trust (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was San Toy Dam built?
San Toy Dam was completed in 1916, making it 110 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 San Toy Dam?
San Toy Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is San Toy Dam?
San Toy Dam has a dam height of 21 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 San Toy Dam last inspected?
San Toy Dam was last inspected on April 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.