Greenwich Reservoir Dam
Key Takeaway
Greenwich Reservoir Dam is classified as high hazard in Ohio. It was completed in 1921 and is 105 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 | 20 ft (taller than 27.7% in OH) |
| Dam Length | 700 ft |
| Dam Type | Earth |
| Max Storage | 79 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,106 cfs |
| Year Completed | 1921 (105 years old) |
| NID ID | OH00217 |
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
Village of Greenwich
Local Government
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Significant Hazard 44 ftFrequently Asked Questions
What is the hazard classification of Greenwich Reservoir Dam?
Greenwich Reservoir 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 Greenwich Reservoir Dam?
Greenwich Reservoir Dam is owned by Village of Greenwich (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Greenwich Reservoir Dam built?
Greenwich Reservoir Dam was completed in 1921, making it 105 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 Greenwich Reservoir Dam?
Greenwich Reservoir 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 Greenwich Reservoir Dam?
Greenwich Reservoir Dam has a dam height of 20 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 Greenwich Reservoir Dam last inspected?
Greenwich Reservoir Dam was last inspected on May 27, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.