Noralyn N-4
Key Takeaway
Noralyn N-4 is classified as significant hazard in Florida. It was completed in 1958 and is 68 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 36 ft (taller than 78% in FL) |
| Dam Length | 3,800 ft |
| Dam Type | Earth |
| Max Storage | 6.2K acre-ft |
| Normal Storage | 6.2K acre-ft |
| Surface Area | 172 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1958 (68 years old) |
| NID ID | FL00670 |
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 22 ftFrequently Asked Questions
What is the hazard classification of Noralyn N-4?
Noralyn N-4 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 Noralyn N-4?
Noralyn N-4 is owned by THE MOSAIC COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Noralyn N-4 built?
Noralyn N-4 was completed in 1958, making it 68 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 Noralyn N-4?
Noralyn N-4 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 Noralyn N-4?
Noralyn N-4 has a dam height of 36 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.