Quadrant East Campus Parcel 1

About Quadrant East Campus Parcel 1

The primary purpose of Quadrant East Campus Parcel 1 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 East Campus Corporate Park C/o Kidder Mathews (private). It impounds the North Lake near Federal Way.

The dam stands 11 feet tall and stretches 380 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 11 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2000, the structure is 26 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 12/03/2021.

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