Blackwood Lake Dam
Key Takeaway
Blackwood Lake Dam is classified as significant hazard in New Jersey. It was completed in 1922 and is 104 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 46.2% in NJ) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 236 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 19 sq mi |
| Max Discharge | 1,927 cfs |
| Year Completed | 1922 (104 years old) |
| NID ID | NJ00800 |
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
Township of Gloucester
Local Government
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Significant Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Blackwood Lake Dam?
Blackwood Lake 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 Blackwood Lake Dam?
Blackwood Lake Dam is owned by Township of Gloucester (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Blackwood Lake Dam built?
Blackwood Lake Dam was completed in 1922, making it 104 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 Blackwood Lake Dam?
Blackwood 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 Blackwood Lake Dam?
Blackwood Lake 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 Blackwood Lake Dam last inspected?
Blackwood Lake Dam was last inspected on April 2, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.