Graniss Pond Dam
Key Takeaway
Graniss 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 | 6 ft (taller than 8.7% in CT) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 220 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1900 (126 years old) |
| NID ID | CT00114 |
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
Grannis Lake Estates Owner Association
Private
Nearby Dams
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Significant Hazard 2 ftFrequently Asked Questions
What is the hazard classification of Graniss Pond Dam?
Graniss 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 Graniss Pond Dam?
Graniss Pond Dam is owned by Grannis Lake Estates Owner Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Graniss Pond Dam built?
Graniss 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 Graniss Pond Dam?
Graniss 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 Graniss Pond Dam?
Graniss Pond Dam has a dam height of 6 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 Graniss Pond Dam last inspected?
Graniss Pond Dam was last inspected on December 5, 1995. Inspection dates indicate when a formal review occurred, not the results of that inspection.