Waterloo Coal Double-cell Slurry Dam

About Waterloo Coal Double-cell Slurry Dam

The primary purpose of Waterloo Coal Double-cell Slurry Dam 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 Jackson Grandview Builders, Inc.. It impounds the Tributary To Cackley Swamp near Pyro.

The dam stands 34 feet tall and stretches 2,050 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 168 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1981, the structure is 45 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/27/2021.

At 34 feet, this dam is taller than 80% of dams nationwide.

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