Lake Tranquility Dam
Key Takeaway
Lake Tranquility Dam is classified as high hazard in New Jersey. It was completed in 1932 and is 94 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 | 14 ft (taller than 46.2% in NJ) |
| Dam Length | 170 ft |
| Dam Type | Earth |
| Normal Storage | 495 acre-ft |
| Surface Area | 51 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1932 (94 years old) |
| NID ID | NJ00275 |
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
Township of Green
Local Government
Nearby Dams
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Significant Hazard 19 ftUpper Waterloo Lake Dam
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Low Hazard 9 ftCranberry Lake Dam
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Significant Hazard 20 ftJefferson Lake Dike
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Lake Tranquility Dam?
Lake Tranquility 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 Tranquility Dam?
Lake Tranquility Dam is owned by Township of Green (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Tranquility Dam built?
Lake Tranquility Dam was completed in 1932, making it 94 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 Tranquility Dam?
Lake Tranquility 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 Tranquility Dam?
Lake Tranquility Dam has a dam height of 14 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 Tranquility Dam last inspected?
Lake Tranquility Dam was last inspected on December 15, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.