Lake Dorothy Dam
Key Takeaway
Lake Dorothy Dam is classified as high hazard in Ohio. It was completed in 1929 and is 97 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 | 36 ft (taller than 76% in OH) |
| Dam Length | 468 ft |
| Dam Type | Earth |
| Max Storage | 2.3K acre-ft |
| Normal Storage | 1.3K acre-ft |
| Surface Area | 114 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 9,660 cfs |
| Year Completed | 1929 (97 years old) |
| NID ID | OH00486 |
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
PPG Industries, Inc.
Private
Nearby Dams
Columbia Lake Dam
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Significant Hazard 17 ftSilver Creek Lake Dam
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High Hazard 25 ftWolf Creek Dam
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High Hazard 43 ftLoyal Oak Lake Dam
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High Hazard 31 ftBilinovich Recreation Area Lake Dam
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Low Hazard 28 ftPancake Lake Dam
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Low Hazard 20 ftWadsworth Sludge Lagoon
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Significant Hazard 25 ftNorth Reservoir Dam
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High Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Lake Dorothy Dam?
Lake Dorothy 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 Lake Dorothy Dam?
Lake Dorothy Dam is owned by PPG Industries, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Dorothy Dam built?
Lake Dorothy 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 Lake Dorothy Dam?
Lake Dorothy 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 Dorothy Dam?
Lake Dorothy 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 Lake Dorothy Dam last inspected?
Lake Dorothy Dam was last inspected on July 15, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.