Hop Brook Dam
Key Takeaway
Hop Brook Dam is classified as high hazard in Connecticut. It was completed in 1968 and is 58 years old. Its primary use is flood risk reduction. 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 | 89 ft (taller than 98.7% in CT) |
| Dam Length | 520 ft |
| Dam Type | Rockfill |
| Max Storage | 23.0K acre-ft |
| Normal Storage | 120 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 23,000 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | CT00504 |
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
USACE - New England District
Federal Government
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What is the hazard classification of Hop Brook Dam?
Hop Brook 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 Hop Brook Dam?
Hop Brook Dam is owned by USACE - New England District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hop Brook Dam built?
Hop Brook Dam was completed in 1968, making it 58 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 Hop Brook Dam?
Hop Brook Dam serves the following purposes: Flood Risk Reduction, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hop Brook Dam?
Hop Brook Dam has a dam height of 89 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 Hop Brook Dam last inspected?
Hop Brook Dam was last inspected on April 24, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.