Napa Valley Dam

About Napa Valley Dam

The primary purpose of Napa Valley Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Napa Valley Owners Association (private). It impounds the Tr- Raccon River near West Des Moines.

The dam stands 32 feet tall and stretches 810 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 155 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1988, the structure is 38 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. The most recent inspection on record was 10/11/2023.

At 32 feet, this dam is taller than 76% of dams nationwide.

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