F-46 Stormwater Detention Basin in the Cedar Bayou Watershed

F-46 Stormwater Detention Basin in the Cedar Bayou Watershed

Recent Action

October 26, 2021 - Harris County Commissioners Court authorized negotiations with an engineering firm for preliminary engineering services in support of this project.

May 19, 2020 - Harris County Commissioners Court approved updates to project details in the 2018 Bond Program List. Update corrects project title to add the words "Right-of-Way Acquisition"; and reallocates funds to new Bond ID F-123 to support the Cedar Bayou Bond Implementation Management (BIM) Project.

September 24, 2019 – Harris County Commissioners Court authorized and initiated this project

Project Description

This project will identify several sites for regional detention along the main stem of Cedar Bayou. Project benefits may include the removal of inundation from structures and roadways along the Cedar Bayou mainstem.

Project challenges include dense development along Cedar Bayou, a utility pipeline crossing near Fox Drive, and potential impacts to wetlands and areas with potential cultural resources.


The project is located south of Interstate Highway I-10, north of North Alexander Drive, and west of State Highway 99 in the southernmost portion of the Cedar Bayou watershed. FM 146 intersects with the project area.


This project is currently undergoing the PRELIMINARY ENGINEERING stage and conceptual design stage. This effort will result in more detailed recommendations for flood damage reduction projects and an implementation strategy for those projects in the form of a PER.

Bond Project Listing

Bond Project F-46 is a “Local Only” project, meaning that the project will be funded entirely from the 2018 Bond Program without any funding partners. The Bond Project List includes an allocation for this project of $22.9 million.


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.