Mississippi River Lock And Dam 10

About Mississippi River Lock And Dam 10

The primary purpose of Mississippi River Lock And Dam 10 is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. The dam is owned by Usace - St. Paul District (federal). It impounds the Mississippi River near Guttenberg.

The dam stands 43 feet tall and stretches 6,788 feet across, creates a reservoir covering 17,070 acres, has a maximum storage capacity of 212,000 acre-feet, and collects water from a drainage area of 79,370 square miles. Completed in 1937, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 07/11/2019.

At 43 feet, this dam is taller than 89% of dams nationwide.

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