Pacificorp - Huntington Settling Pond

About Pacificorp - Huntington Settling Pond

The primary purpose of Pacificorp - Huntington Settling Pond 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 Pacificorp-huntington Plant (private). It impounds the Huntington Creek - Offstream near Huntington.

The dam stands 37 feet tall and stretches 3,400 feet across, has a maximum storage capacity of 450 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1977, the structure is 49 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 05/16/2023.

At 37 feet, this dam is taller than 84% of dams nationwide.

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