Aldrich Lake Dam

About Aldrich Lake Dam

The primary purpose of Aldrich Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Ma Department Of Conservation & Recreation (state). It impounds the Bachelor Brook near Granby.

The dam stands 34 feet tall and stretches 132 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 490 acre-feet, and collects water from a drainage area of 23 square miles. Completed in 1934, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 04/14/2020.

At 34 feet, this dam is taller than 80% of dams nationwide.

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