Great Hill Pond Dam
Key Takeaway
Great Hill Pond Dam is classified as significant hazard in Connecticut. It was completed in 1870 and is 156 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 54.3% in CT) |
| Dam Length | 193 ft |
| Dam Type | Earth |
| Max Storage | 358 acre-ft |
| Normal Storage | 358 acre-ft |
| Surface Area | 72 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 344 cfs |
| Year Completed | 1870 (156 years old) |
| NID ID | CT00150 |
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
Connecticut DEEP
State Government
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Significant Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Great Hill Pond Dam?
Great Hill 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 Great Hill Pond Dam?
Great Hill Pond Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Great Hill Pond Dam built?
Great Hill Pond Dam was completed in 1870, making it 156 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 Hill Pond Dam?
Great Hill 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 Great Hill Pond Dam?
Great Hill Pond Dam has a dam height of 14 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 Hill Pond Dam last inspected?
Great Hill Pond Dam was last inspected on September 29, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.