Blair Lake Dam
Key Takeaway
Blair Lake Dam is classified as high hazard in New Jersey. It was completed in 1903 and is 123 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 | 18 ft (taller than 66.3% in NJ) |
| Dam Length | 100 ft |
| Dam Type | Masonry |
| Max Storage | 60 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 13 sq mi |
| Max Discharge | 984 cfs |
| Year Completed | 1903 (123 years old) |
| NID ID | NJ00774 |
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
Blair Academy
Private
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High Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Blair Lake Dam?
Blair 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 Blair Lake Dam?
Blair Lake Dam is owned by Blair Academy (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Blair Lake Dam built?
Blair Lake Dam was completed in 1903, making it 123 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 Blair Lake Dam?
Blair 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 Blair Lake Dam?
Blair Lake Dam has a dam height of 18 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 Blair Lake Dam last inspected?
Blair Lake Dam was last inspected on March 2, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.