Mosaic Green Bay W Central Stack

About Mosaic Green Bay W Central Stack

The primary purpose of Mosaic Green Bay W Central Stack 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 Peace River near Bartow.

The dam stands 60 feet tall and stretches 8,425 feet across, creates a reservoir covering 55 acres, has a maximum storage capacity of 2,200 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 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. The most recent inspection on record was 09/07/2005. That was over 20 years ago.

At 60 feet, this dam is taller than 95% of all dams in the United States.

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