Williamstown Reservoir Dam

About Williamstown Reservoir Dam

The primary purpose of Williamstown Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Williamstown (local government). It impounds the South Fork Grassy Creek near Williamstown.

The dam stands 40 feet tall and stretches 300 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1947, the structure is well-established, with more than 75 years of service.

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 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 04/13/2017.

At 40 feet, this dam is taller than 87% of dams nationwide.

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