Apshawa Main Dam
Key Takeaway
Apshawa Main Dam is classified as significant hazard in New Jersey. It was completed in 1912 and is 114 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 79.5% in NJ) |
| Dam Length | 500 ft |
| Dam Type | Concrete |
| Normal Storage | 850 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 155 cfs |
| Year Completed | 1912 (114 years old) |
| NID ID | NJ00318 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
County of Passaic
Local Government
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What is the hazard classification of Apshawa Main Dam?
Apshawa Main Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Apshawa Main Dam?
Apshawa Main Dam is owned by County of Passaic (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Apshawa Main Dam built?
Apshawa Main Dam was completed in 1912, making it 114 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 Apshawa Main Dam?
Apshawa Main 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 Apshawa Main Dam?
Apshawa Main Dam has a dam height of 22 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 Apshawa Main Dam last inspected?
Apshawa Main Dam was last inspected on August 20, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.