Pine Island Lake Dike

About Pine Island Lake Dike

The primary purpose of Pine Island Lake Dike is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pine Island Lake, Inc. (private). It impounds the Tributary To North Branch Of Manhan River near Westhampton.

The dam stands 15 feet tall and stretches 270 feet across, creates a reservoir covering 71 acres, has a maximum storage capacity of 1,062 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1920, 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 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 10/29/2021.

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