C-01 Halls Bayou Tributary P118-26-00 and related Stormwater Detention

C-01 Halls Bayou Tributary P118-26-00 and related Stormwater Detention



Recent Actions

January 2020 – Construction began.

November 12, 2019 – Harris County Commissioners Court awarded a $703,427 construction contract in support of this project.

October 8, 2019 – Harris County Commissioners Court approved the Helms Road Stormwater Detention Basin project to advertise for construction bids.

October 8, 2019 – Harris County Commissioners Court accepted a Preliminary Engineering Report regarding this project 

July 30, 2019 – Harris County Commissioners Court authorized negotiations with an engineering firm for materials engineering and testing services in support of this project.

This project involves channel conveyance improvements on Tributary P118-26-00, with connections to and final excavation of Stormwater Detention Basins P518-26-01 and P518-26-02 near Helms Road. 

Stormwater detention basins reduce flooding risks and damages during heavy rain events by safely storing excess stormwater and slowly releasing it back to the bayou when the threat of flooding has passed.


This project includes the entire one-mile length of Tributary P118-26-00, which is located north of Halls Bayou and east of Airline Drive, from near Holtman Street to the confluence with Halls Bayou. The proposed basin sites are located adjacent to the channel, near E. Helms Road.

Project Stage

This project is currently in the PRELIMINARY ENGINEERING stage. This stage of the project will result in a Preliminary Engineering Report with a recommended project that can be taken to Harris County Commissioners Court for approval and then advanced to the DESIGN stage. The PER may identify needed right-of-way acquisition, utility relocation and a preliminary cost estimate.

Bond Project Listing

Bond Project C-01 is a potential “Partnership” project. The Flood Control District has applied for a Community Development Block Grant-DR grant in connection with this project. Total allocation for this project is currently $1 million on the Bond Project List, of which approximately $1 million would be partnership funding, if granted.

Bond Listing

List of 2018 Bond Projects

The Harris County Flood Control District has a significant number of flood damage reduction projects occurring all over Harris County as part of its on-going Capital Improvement Program (CIP), Operations and Maintenance, and the 2018 Bond Program. Click on the red and orange highlighted areas to learn about projects' details. Some early-stage projects are not highlighted in the map. The map will be updated when projects advance or when more information becomes available. 

• Maintenance Projects   
• Capital Projects

Project Lifecycle

Every flood damage reduction project is unique. Yet each project begins and ends, with common and predictable milestones along the way. Whether a project moves forward – and how quickly – depends on many factors, including the availability of funding at each milestone, shifting community priorities for flood damage reduction, and other changing circumstances (such as the price of trees or concrete) from year to year.



A Community Engagement Meeting for this project was held on July 31, 2019.