Pattaconk Reservoir Dam
Key Takeaway
Pattaconk Reservoir Dam is classified as high hazard in Connecticut. It was completed in 1932 and is 94 years old. Its primary use is recreation. 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 | 23 ft (taller than 80% in CT) |
| Dam Length | 416 ft |
| Dam Type | Earth |
| Max Storage | 824 acre-ft |
| Normal Storage | 772 acre-ft |
| Surface Area | 56 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 530 cfs |
| Year Completed | 1932 (94 years old) |
| NID ID | CT00398 |
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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What is the hazard classification of Pattaconk Reservoir Dam?
Pattaconk Reservoir 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 Pattaconk Reservoir Dam?
Pattaconk Reservoir Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pattaconk Reservoir Dam built?
Pattaconk Reservoir Dam was completed in 1932, making it 94 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 Pattaconk Reservoir Dam?
Pattaconk Reservoir Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pattaconk Reservoir Dam?
Pattaconk Reservoir Dam has a dam height of 23 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 Pattaconk Reservoir Dam last inspected?
Pattaconk Reservoir Dam was last inspected on October 2, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.