Pachaug Pond Dam
Key Takeaway
Pachaug Pond Dam is classified as high hazard in Connecticut. It was completed in 1888 and is 138 years old. Its primary use is fish and wildlife pond. 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 | 17 ft (taller than 66% in CT) |
| Dam Length | 770 ft |
| Dam Type | Earth |
| Max Storage | 11.0K acre-ft |
| Normal Storage | 6.0K acre-ft |
| Surface Area | 830 acres |
| Drainage Area | 52 sq mi |
| Max Discharge | 6,400 cfs |
| Year Completed | 1888 (138 years old) |
| NID ID | CT00663 |
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
Nearby Dams
Hopeville Pond Dam
New London, CT
Significant Hazard 18 ftGlasgo Pond Dam
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High Hazard 26 ftAshland Pond Dam
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High Hazard 25 ftRubber Pond Dam
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Significant Hazard 18 ftStone Hill Reservoir Dam
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Significant Hazard 35 ftCity Aka Upper Slater Pond Dam
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Significant HazardSawmill Pond Dam
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High Hazard 12 ftYellow Mill Dam
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Significant Hazard 6 ftFrequently Asked Questions
What is the hazard classification of Pachaug Pond Dam?
Pachaug Pond 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 Pachaug Pond Dam?
Pachaug Pond Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pachaug Pond Dam built?
Pachaug Pond Dam was completed in 1888, making it 138 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 Pachaug Pond Dam?
Pachaug Pond Dam serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pachaug Pond Dam?
Pachaug Pond Dam has a dam height of 17 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 Pachaug Pond Dam last inspected?
Pachaug Pond Dam was last inspected on May 26, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.