Lake Sylvan Dam
Key Takeaway
Lake Sylvan Dam is classified as significant hazard in Ohio. It was completed in 1947 and is 79 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 31.1% in OH) |
| Dam Length | 580 ft |
| Dam Type | Earth |
| Max Storage | 423 acre-ft |
| Normal Storage | 238 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,152 cfs |
| Year Completed | 1947 (79 years old) |
| NID ID | OH00041 |
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
Andrew T. Warnock
Private
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High Hazard 42 ftFrequently Asked Questions
What is the hazard classification of Lake Sylvan Dam?
Lake Sylvan 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 Lake Sylvan Dam?
Lake Sylvan Dam is owned by Andrew T. Warnock (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Sylvan Dam built?
Lake Sylvan Dam was completed in 1947, making it 79 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 Lake Sylvan Dam?
Lake Sylvan 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 Lake Sylvan Dam?
Lake Sylvan 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 Lake Sylvan Dam last inspected?
Lake Sylvan Dam was last inspected on October 29, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.