Garrison Creek Stormwater Detention Dam

About Garrison Creek Stormwater Detention Dam

The primary purpose of Garrison Creek Stormwater Detention Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Kent City Public Works Dept (local government). It impounds the Garrison Creek.

The dam stands 55 feet tall and stretches 150 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 45 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1991, the structure is 35 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 07/20/2021.

At 55 feet, this dam is taller than 94% of dams nationwide.

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