Phosphoria P-5

About Phosphoria P-5

The primary purpose of Phosphoria P-5 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 Homeland.

The dam stands 54 feet tall and stretches 18,900 feet across, creates a reservoir covering 542 acres, has a maximum storage capacity of 26,000 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 years old.

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.

At 54 feet, this dam is taller than 94% of dams nationwide.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.