Charleston Reservoir Dam

About Charleston Reservoir Dam

The primary purpose of Charleston Reservoir Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Bruneau River Ranch Llc (private). It impounds the Bruneau River near Charleston.

The dam stands 16 feet tall and stretches 270 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 500 acre-feet, and collects water from a drainage area of 99 square miles. Completed in 1920, the structure is over a century old.

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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 06/17/2021.

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