Mill Creek Canyon Stormwater Detention D

About Mill Creek Canyon Stormwater Detention D

The primary purpose of Mill Creek Canyon Stormwater Detention D 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 Mill Creek near Within Kent City Limits.

The dam stands 22 feet tall and stretches 550 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 27 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1982, the structure is 44 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 06/21/2023.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Washington dam safety program can provide more specific information about emergency planning for this structure.

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