CI-031 Cost Share with City of Houston on Wallisville Outfall Study

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Recent Actions

December 1, 2020 - Harris County Commissioners approved an amount not to exceed $700,000, with a partial encumbrance of $583,452 for a feasibility study in support of this project.

August 25, 2020 - Harris County Commissioners Court authorized the Flood Control District to negotiate an agreement for engineering services for a feasibility study in support of this project.

April 28, 2020 - Harris County Commissioners Court authorized and initiated this project.

project description

This study investigated flooding along the Wallisville Outfall, formally identified as HCFCD Unit H103-00-00, to identify potential solutions. The H103-00-00 (Wallisville Outfall Channel) is mainly an open grass-lined channel that starts near the intersection of North Wayside Drive and Wallisville Road. The channel drains eastward to ultimately outfall into Hunting Bayou just north of IH-10. The channel and its tributaries service approximately 4.5 square miles of the H103-00-00 area primarily located within the City of Houston, but also a small area of Jacinto City. The secondary drainage system that drains to the Wallisville Outfall Channel consists of multiple roadside ditches and storm sewer networks owned and maintained by the City of Houston.

The results of the existing conditions analysis for multiple storm events identified areas of concern and drainage system improvement options, which were evaluated based on their ability to reduce structural and roadway flooding and other local drainage problems. The study also identified required mitigation facilities necessary to reduce flooding risk and damages. Depending on partnership funding availability, the project will next move into the Preliminary Engineering stage. The project will be coordinated with existing City of Houston plans. Please see 2018 Bond Program Project F-17.

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