Holmes Harbor Reclaimed Water Ponds

About Holmes Harbor Reclaimed Water Ponds

Holmes Harbor Reclaimed Water Ponds is a dam in Island, Washington. The dam is owned by Holmes Harbor Sewer District (public utility). It impounds the Offstream.

The dam stands 66 feet tall and stretches 1,800 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 60 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1994, the structure is 32 years 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 08/15/2024.

At 66 feet, this dam is taller than 96% of all dams in the United States.

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