Great Swamp Flood Control Dam
Key Takeaway
Great Swamp Flood Control Dam is classified as high hazard in Connecticut. It was completed in 1979 and is 47 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 | 12 ft (taller than 42.4% in CT) |
| Dam Length | 276 ft |
| Surface Area | 134 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1979 (47 years old) |
| NID ID | CT05002 |
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
Connecticut DEEP
State Government
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Significant Hazard 6 ftFrequently Asked Questions
What is the hazard classification of Great Swamp Flood Control Dam?
Great Swamp Flood Control 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 Great Swamp Flood Control Dam?
Great Swamp Flood Control Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Great Swamp Flood Control Dam built?
Great Swamp Flood Control Dam was completed in 1979, making it 47 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 Great Swamp Flood Control Dam?
Great Swamp Flood Control Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Great Swamp Flood Control Dam?
Great Swamp Flood Control Dam has a dam height of 12 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 Great Swamp Flood Control Dam last inspected?
Great Swamp Flood Control Dam was last inspected on October 29, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.