Carding Mill Pond Dam

About Carding Mill Pond Dam

The primary purpose of Carding Mill Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Sudbury (local government). It impounds the Hop Brook near Sudbury.

The dam stands 17 feet tall and stretches 575 feet across, creates a reservoir covering 42 acres, has a maximum storage capacity of 275 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1930, 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 03/10/2023.

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