Big Lebanon Lake Dam

About Big Lebanon Lake Dam

The primary purpose of Big Lebanon Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Salvator Amoroso (private). It impounds the Timber Creek South Branch near Turnersville.

The dam stands 13 feet tall and stretches 260 feet across, creates a reservoir covering 8 acres, has a storage capacity of 51 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1941, 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 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 10/11/2024.

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