Major South Mayde Creek Flood Project Moves Into Construction Near Grand Parkway in West Harris County
For residents who live, drive or own property near Grand Parkway, Clay Road and Stockdick School Road in west Harris County, a flood control project that has been years in the making is moving from plans on paper to work on the ground.
The Harris County Flood Control District has begun construction activities on Phase One of the Stormwater Detention Basin on South Mayde Creek near the Grand Parkway, a regional project intended to temporarily hold large volumes of stormwater during heavy rain and help reduce flood risk in the surrounding area.
Early work includes contractor mobilization, initial site preparation and related construction activities. Crews will access the project area from Stockdick School Road and Clay Road, meaning nearby residents and motorists may begin noticing construction activity around South Mayde Creek and the Grand Parkway corridor.
The project matters well beyond the construction sites themselves. West Harris County has continued to add homes, businesses and traffic, while communities throughout the Addicks Reservoir watershed remain acutely aware of the consequences that prolonged or intense rainfall can bring. Additional stormwater detention is one of the tools local flood officials use to give runoff somewhere to go temporarily rather than allowing all of that water to move downstream at once.
Two New Detention Compartments Will Store About 161 Acre-Feet of Stormwater
Phase One calls for construction of two wet-bottom stormwater detention compartments along South Mayde Creek.
One will be located south of Stockdick School Road and east of South Mayde Creek. The second will sit north of Clay Road and west of South Mayde Creek.
Together, the two compartments are designed to provide approximately 161 acre-feet of stormwater storage capacity. The Harris County Flood Control District describes that amount as roughly equivalent to 161 football fields covered by one foot of water.
Unlike a dry detention basin that generally empties completely between storms, the planned wet-bottom compartments will maintain permanent pools of water. During heavy rainfall, the basins will have additional capacity to temporarily store runoff before releasing it in a more controlled manner.
That does not mean the basins can eliminate flooding altogether. Rather, detention projects are designed to reduce flood risk by slowing the movement of stormwater through the drainage system during major rain events.
Project Is Part of the Addicks Reservoir Watershed Flood Strategy
The project is located within the Addicks Reservoir watershed, an area where flood risk reduction has remained a major public priority.
The Flood Control District uses several approaches to address flooding across Harris County, including channel conveyance improvements and regional stormwater detention basins. In this case, the South Mayde Creek project is intended to add storage capacity near the Grand Parkway and Clay Road area before stormwater continues through the broader watershed.
Planning for the project dates back several years. On Oct. 26, 2021, Harris County Commissioners Court approved a Preliminary Engineering Report that included an alternative featuring a basin with a permanent pool of water to maximize stormwater detention.
The project includes right-of-way acquisition, design and construction of the detention compartments.
For nearby neighborhoods, the significance is fairly straightforward: the basin is being built to create more room for stormwater during major rain events in a part of Harris County that has experienced substantial development and continued population growth.
Phase One Construction Expected to Continue Through 2027
The Flood Control District lists Phase One of the South Mayde Creek detention basin project as being in the construction stage.
The anticipated construction schedule calls for work to begin in the third quarter of 2026, with completion expected in the third quarter of 2027.
Residents should expect construction activity around both project locations during that period, including equipment and contractor access from Clay Road and Stockdick School Road.
The Phase One construction contract was awarded for $7.5 million, while the overall estimated cost for Phase One is approximately $11.7 million.
Funding comes from a combination of Harris County and federal disaster-recovery and mitigation resources.
The 2018 Harris County Flood Control District Bond Program is expected to contribute approximately $4.8 milliontoward Phase One.
The project is also receiving up to $6.8 million through a combination of Community Development Block Grant-Mitigation and Community Development Block Grant-Disaster Recovery funding. Those federal funds are provided by the U.S. Department of Housing and Urban Development and administered through the Texas General Land Office.
The mix of local, state-administered and federal funding reflects the larger effort to advance flood risk reduction projects throughout Harris County following years in which major storms highlighted weaknesses in the region's drainage and flood control infrastructure.
A Third Detention Compartment Could Come Later
The two detention compartments now moving forward are not necessarily the final piece of the project.
A proposed Phase Two would add a third compartment east of the southern Phase One basin and east of South Mayde Creek.
That future section remains dependent on resolution of access constraints, according to the Flood Control District.
If ultimately completed, the third compartment would further expand the detention system being developed along this stretch of South Mayde Creek.
For now, the focus is on completing the two Phase One basins and putting approximately 161 acre-feet of new stormwater storage into service.
What West Harris County Residents Can Expect Next
In the near term, the most visible change will be construction.
Crews will mobilize, prepare the sites and begin the work needed to form the two wet-bottom detention areas. Nearby drivers may notice equipment entering and leaving the project sites from Clay Road and Stockdick School Road as work progresses.
The larger change will take longer to see.
Once complete, the South Mayde Creek detention basins will become part of the flood control infrastructure serving the Grand Parkway area and the broader Addicks Reservoir watershed — infrastructure that is often most important on the days when residents would rather not have to think about it at all.
For homeowners and families in west Harris County, that is ultimately what the project is about: creating additional capacity before the next major rainfall event arrives.
The Harris County Flood Control District says it will continue implementing flood risk reduction projects across the Addicks Reservoir watershed with support from federal, state and local partners.
My Neighborhood News will continue following construction of the South Mayde Creek stormwater detention basin, including progress on Phase One and any future movement on the proposed third compartment.
Tiffany Krenek has been on the My Neighborhood News team since August 2021. She is passionate about curating and sharing content that enriches the lives of our readers in a personal, meaningful way. A loving mother and wife, Tiffany and her family live in the West Houston/Cypress region.Do you own a business?
