Oneco Pond Dam
Key Takeaway
Oneco Pond Dam is classified as significant hazard in Connecticut. It was completed in 1900 and is 126 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 24.9% in CT) |
| Dam Length | 120 ft |
| Dam Type | Masonry |
| Max Storage | 66 acre-ft |
| Normal Storage | 66 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 37 sq mi |
| Max Discharge | 1,365 cfs |
| Year Completed | 1900 (126 years old) |
| NID ID | CT00611 |
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
Hank Graff
Private
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Oneco Pond Dam?
Oneco Pond 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 Oneco Pond Dam?
Oneco Pond Dam is owned by Hank Graff (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Oneco Pond Dam built?
Oneco Pond Dam was completed in 1900, making it 126 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 Oneco Pond Dam?
Oneco Pond 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 Oneco Pond Dam?
Oneco Pond Dam has a dam height of 9 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.