Norwalk Upper Reservoir
Key Takeaway
Norwalk Upper Reservoir is classified as high hazard in Ohio. It was completed in 1896 and is 130 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 | 39 ft (taller than 81.2% in OH) |
| Dam Length | 2,800 ft |
| Dam Type | Earth |
| Max Storage | 854 acre-ft |
| Normal Storage | 595 acre-ft |
| Surface Area | 51 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 9,426 cfs |
| Year Completed | 1896 (130 years old) |
| NID ID | OH00762 |
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 Norwalk
Local Government
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Norwalk Upper Reservoir?
Norwalk Upper Reservoir 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 Norwalk Upper Reservoir?
Norwalk Upper Reservoir is owned by City of Norwalk (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Norwalk Upper Reservoir built?
Norwalk Upper Reservoir was completed in 1896, making it 130 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 Norwalk Upper Reservoir?
Norwalk Upper Reservoir serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Norwalk Upper Reservoir?
Norwalk Upper Reservoir has a dam height of 39 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 Norwalk Upper Reservoir last inspected?
Norwalk Upper Reservoir was last inspected on May 18, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.