Atsion Lake Dam
Key Takeaway
Atsion Lake Dam is classified as high hazard in New Jersey. 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 | 19 ft (taller than 70% in NJ) |
| Dam Length | 590 ft |
| Dam Type | Earth |
| Normal Storage | 250 acre-ft |
| Surface Area | 85 acres |
| Drainage Area | 27 sq mi |
| Max Discharge | 162 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | NJ00041 |
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
NJDOT
State Government
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Significant Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Atsion Lake Dam?
Atsion 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 Atsion Lake Dam?
Atsion Lake Dam is owned by NJDOT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Atsion Lake Dam built?
Atsion Lake 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 Atsion Lake Dam?
Atsion 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 Atsion Lake Dam?
Atsion Lake Dam has a dam height of 19 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 Atsion Lake Dam last inspected?
Atsion Lake Dam was last inspected on May 7, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.