Cobbs Mill Dam
Key Takeaway
Cobbs Mill Dam is classified as significant hazard in New Jersey. It was completed in 1940 and is 86 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 10 ft (taller than 17.8% in NJ) |
| Dam Length | 275 ft |
| Dam Type | Earth |
| Normal Storage | 29 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1940 (86 years old) |
| NID ID | NJ00612 |
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
William R. Cobb
Private
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Significant Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Cobbs Mill Dam?
Cobbs Mill 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 Cobbs Mill Dam?
Cobbs Mill Dam is owned by William R. Cobb (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cobbs Mill Dam built?
Cobbs Mill Dam was completed in 1940, making it 86 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 Cobbs Mill Dam?
Cobbs Mill 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 Cobbs Mill Dam?
Cobbs Mill Dam has a dam height of 10 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 Cobbs Mill Dam last inspected?
Cobbs Mill Dam was last inspected on March 24, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.