Mamanasco Lake Dam
Key Takeaway
Mamanasco Lake 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 | 6 ft (taller than 8.7% in CT) |
| Dam Length | 120 ft |
| Dam Type | Earth |
| Max Storage | 435 acre-ft |
| Normal Storage | 435 acre-ft |
| Surface Area | 87 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 54 cfs |
| Year Completed | 1870 (156 years old) |
| NID ID | CT00220 |
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
Camp, Jr.
Private
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High Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Mamanasco Lake Dam?
Mamanasco Lake 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 Mamanasco Lake Dam?
Mamanasco Lake Dam is owned by Camp, Jr. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mamanasco Lake Dam built?
Mamanasco Lake 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 Mamanasco Lake Dam?
Mamanasco Lake 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 Mamanasco Lake Dam?
Mamanasco Lake 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.