Lake Harwinton Dam
Key Takeaway
Lake Harwinton Dam is classified as high hazard in Connecticut. It was completed in 1930 and is 96 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 30 ft (taller than 87.9% in CT) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 230 acre-ft |
| Normal Storage | 180 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1930 (96 years old) |
| Year Modified | 2009 |
| NID ID | CT00367 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Harwinton Lake Association
Private
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What is the hazard classification of Lake Harwinton Dam?
Lake Harwinton Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Lake Harwinton Dam?
Lake Harwinton Dam is owned by Harwinton Lake Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Harwinton Dam built?
Lake Harwinton Dam was completed in 1930, making it 96 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 Harwinton Dam?
Lake Harwinton 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 Harwinton Dam?
Lake Harwinton Dam has a dam height of 30 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 Harwinton Dam last inspected?
Lake Harwinton Dam was last inspected on July 24, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.