Old Falls

About Old Falls

The primary purpose of Old Falls is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Kei (usa) Power Management Inc. (private). It impounds the Mousam.

The dam stands 36 feet tall and stretches 263 feet across, creates a reservoir covering 85 acres, has a maximum storage capacity of 590 acre-feet, and collects water from a drainage area of 100 square miles. Completed in 1890, the structure is over a century 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. An emergency action plan is in place for this dam. The most recent inspection on record was 11/09/2023.

At 36 feet, this dam is taller than 83% of dams nationwide.

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