Kingsford N5

About Kingsford N5

The primary purpose of Kingsford N5 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by The Mosaic Company (private). It impounds the Alafia River near Keysville.

The dam stands 48 feet tall and stretches 17,945 feet across, creates a reservoir covering 469 acres, has a maximum storage capacity of 20,000 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1929, the structure is well-established, with more than 75 years of service.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 01/20/2006. That was over 20 years ago.

At 48 feet, this dam is taller than 92% of dams nationwide.

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