Mercer Stormwater Detention Basin Construction Advisory

12/15/2023

In an effort to keep you informed about the Harris County Flood Control District’s continuing improvements in the Cypress Creek watershed, we want to notify you about an upcoming flood risk reduction project in your area.

In an effort to keep you informed about the Harris County Flood Control District’s continuing improvements in the Cypress Creek watershed, we want to notify you about an upcoming flood risk reduction project in your area. 

In December 2023, the Flood Control District expects to begin construction on the Mercer Stormwater Detention Basin which is located north of FM-1960, east of the Hardy Toll Road, south of Cypress Creek and west of the Memorial Hills Subdivision.

The project will include the excavation of 512 acre-feet of soil and other materials from the site. Once complete, the $14.8 million dry-bottom stormwater detention basin is expected to provide approximately 166.8 million gallons of stormwater storage during heavy rainfall events. The stormwater detention basin is designed to be separated into two compartments, north and south, with an equalizer pipe connecting the two compartments. An outfall pipe will also be constructed along the north compartment so stormwater can flow directly into Cypress Creek. 

This project is funded in part by a $15.4 million grant the U.S. Department of Housing and Urban Development’s Community Development Block Grant Disaster Recovery program and with a $9.7 million local contribution from the 2018 Bond Program.

Contractors are planning to access the work area via FM-1960 or Lazy Ravine Lane in the Memorial Hills Subdivision. The contractor may use heavy construction equipment such as dump trucks, excavators and bulldozers. Motorists are urged to be alert to truck traffic when passing near construction access points and along truck routes.


Contractor – Arrowstone Contracting, LLC
Contract Amount – $14,846,391
Construction Start – December 2023
Construction Contract Duration – 348 Calendar Days


The Flood Control District appreciates your patience through the duration of this project. Should you have questions or comments, please contact us at www.hcfcd.org/contact-us or visit the project page at www.hcfcd.org/mercer.