Griggs Pond Dam
Key Takeaway
Griggs 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 | 7 ft (taller than 13.2% in CT) |
| Dam Length | 95 ft |
| Dam Type | Earth |
| Max Storage | 153 acre-ft |
| Normal Storage | 153 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 25 cfs |
| Year Completed | 1870 (156 years old) |
| NID ID | CT00439 |
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 18 ftFrequently Asked Questions
What is the hazard classification of Griggs Pond Dam?
Griggs 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 Griggs Pond Dam?
Griggs Pond Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Griggs Pond Dam built?
Griggs 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 Griggs Pond Dam?
Griggs 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 Griggs Pond Dam?
Griggs Pond Dam has a dam height of 7 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 Griggs Pond Dam last inspected?
Griggs Pond Dam was last inspected on February 23, 1989. Inspection dates indicate when a formal review occurred, not the results of that inspection.