Lake Marie Dam
Key Takeaway
Lake Marie Dam is classified as significant hazard in Connecticut. It was completed in 1880 and is 146 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 | 160 ft |
| Dam Type | Earth |
| Max Storage | 73 acre-ft |
| Normal Storage | 73 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 31 cfs |
| Year Completed | 1880 (146 years old) |
| NID ID | CT00196 |
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
Joshua's Tract Conservation & Historic Trust
Private
Nearby Dams
Frog Pond Dam
Windham, CT
Significant Hazard 10 ftRobinson Pond Dam
Windham, CT
Significant Hazard 14 ftIndian Hollow Pond Dam
Windham, CT
Low Hazard 9 ftBibbins Pond Dam
Windham, CT
Significant Hazard 9 ftPotash Pond Dam
Windham, CT
Significant Hazard 21 ftScotland
Windham, CT
Low Hazard 37 ftBig Pond Dam
Windham, CT
High Hazard 20 ftSpencer Pond Dam
New London, CT
Significant Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Lake Marie Dam?
Lake Marie 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 Lake Marie Dam?
Lake Marie Dam is owned by Joshua's Tract Conservation & Historic Trust (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Marie Dam built?
Lake Marie Dam was completed in 1880, making it 146 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 Lake Marie Dam?
Lake Marie 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 Lake Marie Dam?
Lake Marie 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.
When was Lake Marie Dam last inspected?
Lake Marie Dam was last inspected on August 21, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.