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Activity  ⁄  Active Projects  ⁄  Armand Bayou  ⁄  Conveyance Improvements on Armand Bayou

Conveyance Improvements on Armand Bayou

Conveyance Improvements on Armand Bayou
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C-06 La Porte
C-07 Genoa Red Bluff Stormwater Detention Basin
C-44 Armand Bayou Right-of-Way Acquisition and Floodplain Preservation
CI-021 Brookglen Flooding Mitigation Analysis
CI-023 Channel Conveyance Improvements Along Horsepen Bayou
F-72 Baywood Stormwater Detention Basin
F-96 Armand Bayou Watershed Planning Project
F-99 Drainage improvements in the Armand Bayou Watershed
Conveyance Improvements on Armand Bayou
Brookglen Stormwater Detention Basin B512-02-00
B504-01-00 Stormwater Detention Basin near Ellington Field
Z-02 College Park Subdivision Drainage Improvements
Z-02 Partnership Project with City of Deer Park for Delo-Elaine Stormwater Detention Basin
Z-02 - Partnership Project with Pasadena-Bliss Meadows
Z-02 Partnership project with the City of Deer Park at B112-03-00
Z-02 Partnership Project with City of La Porte for Brookglen Subdivision Drainage Improvements.
Z-02 Partnership Project with Pasadena for Red Bluff Road drainage improvements
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Recent Actions

November 15, 2022 – Harris County Flood Control District transmitted a certificate of substantial completion in connection with this project.

September 27, 2022 - Harris County Commissioners Court authorized the acquisition of 36 tracts of land.

September 27, 2022 - Harris County Commissioners Court approved a change in the construction contract with no change to the contract amount.

June 28, 2022 – Harris County Commissioners Court approved a change in the construction contract for the Armand Bayou at Sam Houston Tollway East stormwater conveyance improvements project, adding 9 calendar days with no change to the contract amount.

May 10, 2022 – Harris County Commissioners Court approved a change in contract with a construction contractor resulting in an addition of $9,110 to the contract amount in support of this project.

February 22, 2022 – Harris County Commissioners Court approved a $10,000 amendment to an agreement for additional materials engineering and testing services in support of this project.

January 25, 2022 – Harris County Commissioners Court approved an amendment in the amount of $9,981 to provide additional materials engineering and testing services in support of this project.

July 20, 2021 – Harris County Commissioners Court authorized a change in the construction contract, resulting in an increase of $54,953.

September 15, 2020 – Harris County Commissioners Court authorized an agreement with Harris County Toll Road Authority in support of this project.

July 28, 2020 – Harris County Commissioners Court awarded $4,985,763 for widening and deepening of Armand Bayou for the Flood Control District in support of this project (subject to applicable bonds to be received).

March 24, 2020 – Harris County Commissioners Court authorized negotiations for materials engineering and testing services in support of this project.

October 8, 2019 – Harris County Commissioners Court authorized an additional $281,510 for design, bidding and construction stage engineering services in support of this project 

August 2, 2017 – Harris County Commissioners Court accepted a Preliminary Engineering Report in support of this project. 

July 11, 2017 – Harris County Commissioners Court approved an $871,741 agreement with an engineering firm to provide design, bidding and construction phase engineering services in support of this project. 

September 13, 2016 – Harris County Commissioners Court approved an agreement with the Harris County Toll Road Authority in support of this project.

Project Description

In July 2022, the Harris County Flood Control District completed construction on a project to widen and deepen a segment of Armand Bayou from Sam Houston Tollway East to Spencer Highway. The project was a partnership with Harris County Toll Road Authority in connection with a HCTRA project to expand the toll road. HCTRA funded the channel project, which was managed by the Flood Control District.

Channel improvements along this 2,300-foot section of Armand Bayou will mitigate for increased stormwater flows as a result of the road project. The new design allows for storm sewer outfall from HCTRA’s tollway widening.

This project involved the deepening and widening of the previously V-shaped channel to a new trapezoidal (flat-bottom) design. With construction now complete, the channel is approximately 61 feet wide and 8 feet deep, with a bank-to-bank channel width of as much as 122 feet. (Previously the channel in this area was 6 feet deep and between 20 and 30 feet wide.) Property along the channel was acquired to widen the previous channel corridor to a maximum of 182 feet, including maintenance berms on each side to allow for future routine maintenance access.

Natural stable channel design features of the new channel will improve its environmental value, while also working to stabilize the slopes. These environmentally friendly features include using natural root balls to armor the “toe” of the bayou banks, and using a series of pools and rock riffles to slow the water and reduce erosion. This improved reach of Armand Bayou now has room to meander more naturally within the wider channel corridor.

As part of the project, three bridges over Armand Bayou at Sinclair Street, DuPont Street and Oleander Drive were replaced to accommodate the channel widening.

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Update November 2020

Public Meeting

A Public Meeting for this project was held on February 12, 2020.

Meeting Presentation Meeting Video