C-41 Main Stem Flood Risk Reduction in the Vicinity of I-45 & Halls Bayou

C-41 Main Stem Flood Risk Reduction in the Vicinity of I-45 & Halls Bayou

Recent Action

March 30, 2021 – Harris County Commissioners Court authorized the acquisition of one tract of land in support of this project.

September 29, 2020 – Harris County Commissioners Court authorized the acquisition of a tract of land for this project.


This project aims to reduce the risk of flooding along the Halls Bayou main stem by making improvements to the main stem in the vicinity where Halls Bayou intersects with Interstate 45. The Flood Control District is working in collaboration with the Texas Department of Transportation to mitigate any potential impacts from future infrastructure improvement projects.

As part of the preliminary engineering stage, the Flood Control District is evaluating various alternatives, including channel conveyance improvements and stormwater detention basins.

Phase 1 of this project, Bond Project C-25, will make channel conveyance improvements to Tributary P118-21-00 and a stormwater detention basin that will be incorporated into this project.

All projects included within C-41 will make improvements to the main stem of Halls Bayou.

This project is part the Watershed-Wide Project Implementation Program for Halls Bayou.


The exact project locations are to be determined.


This project is currently in the ALTERNATIVES ANALYSIS phase of the PRELIMINARY ENGINEERING stage.

Bond Project Listing

Bond Project C-41 is a potential “Partnership” project. Total allocation for all projects listed under C-41 is currently almost $155 million, of which approximately $151.1 million is partnership funding and approximately $3.5 million is local costs.

Public Information Session

A series of projects in the Halls Bayou watershed are included in two separate applications for federal funding through the Community Development Block Grant for Mitigation (CDBG-MIT) Program. The projects included are Bond Project IDs: C-01, C-23, C-24, C-26, C-28, C-30 and C-41. A virtual Public Information Session to discuss these projects was held on:

Date: Wednesday, September 23, 2020
Time: 6:30 p.m. to 7:30 p.m.

The official public comment period for the CDBG-MIT applications will be open from October 3 – October 16, 2020. We encourage residents to learn more about the application process, submit a comment and view the meeting presentation and video: