John D. Milne Lake Dam
Key Takeaway
John D. Milne Lake Dam is classified as high hazard in Connecticut. It was completed in 1947 and is 79 years old. Its primary use is water supply. 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 | 70 ft (taller than 97.5% in CT) |
| Dam Length | 940 ft |
| Dam Type | Concrete |
| Max Storage | 1.9K acre-ft |
| Normal Storage | 1.7K acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 8,000 cfs |
| Year Completed | 1947 (79 years old) |
| Year Modified | 1999 |
| NID ID | CT00058 |
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
City of Norwalk
Local Government
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What is the hazard classification of John D. Milne Lake Dam?
John D. Milne Lake 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 John D. Milne Lake Dam?
John D. Milne Lake Dam is owned by City of Norwalk (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was John D. Milne Lake Dam built?
John D. Milne Lake Dam was completed in 1947, making it 79 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 John D. Milne Lake Dam?
John D. Milne Lake Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is John D. Milne Lake Dam?
John D. Milne Lake Dam has a dam height of 70 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 John D. Milne Lake Dam last inspected?
John D. Milne Lake Dam was last inspected on July 10, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.