Caselton Mill Middle Dam

About Caselton Mill Middle Dam

The primary purpose of Caselton Mill Middle 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 Bunker Hill Mining (private). It impounds the Meadow Valley Wash-tr near Caliente.

The dam stands 20 feet tall and stretches 100 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 0 square miles.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/02/2018.

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