Recommendation Concerning the Willowbrook Lake Dam Project - Joy Jones, P.E., Public Works Department Director

That the Board approve bringing $400,000, available in “Local Option Sales Tax” (LOST) IV, Cost Center 210106, Fund 353, forward from Fiscal Year 2020 to Fiscal Year 2019 for the Willowbrook Lake Dam project so that staff can begin the construction process. 

This project is located in Commission District 5.

Willowbrook Lake is located south of Kingsfield Road, north of Ten Mile Road, east of US 29, west of Chemstrand Road, and serves as a storm water retention pond for this area.

The dam and outfall structure at Willowbrook Lake was severely damaged during the April 2014 Rainfall Event. The infrastructure of Chemstrand Road was also comprimised, a major corridor to industries north of Nine Mile Road. The purpose of this project is to reconstruct the dam to provide stormwater management and treatment for the area, protect the infrastructure of Chemstrand Road, reduce flooding for downstream properties and restore the original lake area

The project will include removing and rebuilding the dam with a solid clay core, an inlet system, and an energy dissipater. A concrete overflow weir will control the level of the lake during a storm. The project design has been completed and all permits have been acquired.