Poheganut Reservoir Dam
Key Takeaway
Poheganut Reservoir Dam is classified as significant hazard in Connecticut. It was completed in 1952 and is 74 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 16 ft (taller than 63.7% in CT) |
| Dam Length | 1,078 ft |
| Dam Type | Earth |
| Max Storage | 560 acre-ft |
| Normal Storage | 687 acre-ft |
| Surface Area | 108 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1952 (74 years old) |
| NID ID | CT00257 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Groton
Local Government
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Significant Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Poheganut Reservoir Dam?
Poheganut Reservoir Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Poheganut Reservoir Dam?
Poheganut Reservoir Dam is owned by City of Groton (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Poheganut Reservoir Dam built?
Poheganut Reservoir Dam was completed in 1952, making it 74 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 Poheganut Reservoir Dam?
Poheganut Reservoir Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Poheganut Reservoir Dam?
Poheganut Reservoir Dam has a dam height of 16 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 Poheganut Reservoir Dam last inspected?
Poheganut Reservoir Dam was last inspected on November 30, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.