N-4 Rockland Mine
Key Takeaway
N-4 Rockland Mine is classified as significant hazard in Florida. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 40 ft (taller than 79.9% in FL) |
| Dam Length | 0 ft |
| Dam Type | Earth |
| Max Storage | 17.0K acre-ft |
| Normal Storage | 15.4K acre-ft |
| Surface Area | 440 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| NID ID | FL00622 |
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
THE MOSAIC COMPANY
Private
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Significant Hazard 80 ftFrequently Asked Questions
What is the hazard classification of N-4 Rockland Mine?
N-4 Rockland Mine 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 N-4 Rockland Mine?
N-4 Rockland Mine is owned by THE MOSAIC COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of N-4 Rockland Mine?
N-4 Rockland Mine serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is N-4 Rockland Mine?
N-4 Rockland Mine has a dam height of 40 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.