Norfolk Dam
Key Takeaway
Norfolk Dam is classified as high hazard in New York. It was completed in 1965 and is 61 years old. Its primary use is hydroelectric. 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 | 29 ft (taller than 77.5% in NY) |
| Dam Length | 500 ft |
| Dam Type | Concrete |
| Max Storage | 108 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1,066 sq mi |
| Max Discharge | 22,030 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | NY00582 |
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
Erie Boulevard Hydropower, LP/Brookfield Renewable
Private
Nearby Dams
East Norfolk
St. Lawrence, NY
High Hazard 16 ftRaymondville
St. Lawrence, NY
Low Hazard 17 ftYaleville
St. Lawrence, NY
Low Hazard 12 ftNorwood
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High Hazard 24 ftUnionville
St. Lawrence, NY
Low Hazard 20 ftHewittville
St. Lawrence, NY
Low Hazard 18 ftSissonville
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Low Hazard 16 ftWilson Road Dike
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Norfolk Dam?
Norfolk 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 Norfolk Dam?
Norfolk Dam is owned by Erie Boulevard Hydropower, LP/Brookfield Renewable (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Norfolk Dam built?
Norfolk Dam was completed in 1965, making it 61 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 Norfolk Dam?
Norfolk Dam serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Norfolk Dam?
Norfolk Dam has a dam height of 29 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 Norfolk Dam last inspected?
Norfolk Dam was last inspected on July 29, 1997. Inspection dates indicate when a formal review occurred, not the results of that inspection.