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Activity  ⁄  Projects  ⁄  Armand Bayou  ⁄  F-96 Armand Bayou Watershed Planning Project

F-96 Armand Bayou Watershed Planning Project

F-96 Armand Bayou Watershed Planning Project
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C-06 La Porte
C-06 Brookglen Stormwater Detention Basin at B512-02-00
CI-021 Brookglen Flooding Mitigation Analysis
C-07 Genoa Red Bluff Stormwater Detention Basin
CI-023 Channel Conveyance Improvements Along Horsepen Bayou
C-44 Armand Bayou Right-of-Way Acquisition and Floodplain Preservation
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
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

May 19, 2020 - Harris County Commissioners Court approved updates to project details in the 2018 Bond Program List. Update includes type and funding changed to 2018 CDBG-DR.

September 24, 2019 - Harris County Commissioners Court approved agreements with engineering firms to conduct Watershed Planning Projects.

July 9, 2019 - Harris County Commissioners Court approved negotiations with engineering firms in support of this project.

May 14, 2019 - Harris County Commissioners Court authorized and initiated this project.

April 9, 2019 - Harris County Commissioners Court approved a request for a Statement of Qualifications from engineering firms in support of this project.

April 9, 2019 - Harris County Commissioners Court approved amended funding for Harris County from the CDBG-DR program.

August 18, 2018 - The State of Texas received additional Community Development Block Grant disaster relief funding of $89 million that included additional funding for watershed planning activities in Harris County.

July 10, 2019 - Harris County Commissioners Court approved a State of Texas action plan that included Community Development Block Grant disaster relief funding of $1.1 billion.

PROJECT DESCRIPTION

This effort resulted in a watershed-wide plan for major stormwater infrastructure improvements in the watershed of Armand Bayou, HCFCD Unit B100-00-00. Completed in 2021, the Armand Bayou Watershed Planning Project investigated flooding problems, identified ongoing and proposed flood mitigation projects, and evaluated and recommended potential future projects to reduce the risk of flooding in this watershed.

Summary of Armand Bayou Watershed Plan

Revised March 9, 2021

The Flood Control District applied for and was awarded partnership funding for this planning effort from the U.S. Department of Housing and Urban Development (HUD) Community Development Block Grant-Disaster Recovery program (CDBG-DR) awarded to Harris County Community Services Department.

Planners worked with Harris County, local municipal jurisdictions including the cities of Pasadena, Deer Park, La Porte and Houston, as well other agencies, both to clarify flooding issues in the watershed, and to improve coordination between Flood Control District regional projects and future local projects.

This type of Watershed Planning Project is a feasibility project, which means that results and recommendations are generally at a conceptual level. Each recommended project would need to be developed in more detail during separate preliminary engineering and design stages of the project lifecycle before proceeding to construction, which could be at least several years away. 

Taking a watershed-wide approach will ensure that future flood risk reduction projects work together and are sequenced appropriately to achieve the maximum benefits.

The Armand Bayou Watershed Planning Project had a contract budget of $1.035 million. The 2018 HCFCD Bond Program includes Bond ID F-99, which allocates $10 million for ROW acquisition, engineering and construction of individual flood risk reduction projects in the watershed.

Goals of This Watershed Planning Project

Goal 1: Identify Existing and Potential Future Flooding Problems. Goal 2: Evaluate Problems and Potential Solutions. Goal 3: Develop Watershed Strategy. Goal 4: Create Watershed Plan Document. Goal 5: Develop Additional Details for Immediate Projects. We are at goal 4.
Taking advantage of past Flood Control District reports and studies, the Watershed Planning Projects will:
  1. Define existing conditions for the drainage infrastructure and identify existing and potential future flooding problems in the watershed.
  2. Evaluate potential solutions to these problems using criteria provided by the Flood Control District.
  3. Develop a strategy for the watersheds that provides appropriate improvements for future drainage infrastructure.
  4. Create a comprehensive Watershed Plan to document recommendations for required improvement projects.
  5. Develop a list of immediate improvement projects with more detailed costs and implementation information.

Watershed Information

Known Flood-Prone Areas
  • Horsepen Bayou B104-00-00 channel area – This area is located in the City of Houston southeast of Ellington Field. A majority of this area is also under the jurisdiction of the Clear Lake City Water Authority. 
  • Willow Springs Bayou B112-00-00 channel area – This area is located in the City of La Porte near the confluence of Willow Springs Bayou with the B112-02-00 tributary. Previously, a diversion channel was constructed to route B112-02-00 into B109-00-00. However, the significant floodplain area and flooding of single-family and multi-family structures remain in this part of the watershed.
  • B100-00-00, B114-00-00, and B115-00-00 channel areas – This area is located in the City of Pasadena primarily north of Spencer Highway and west of Genoa Red Bluff Road intersection. In addition to multiple single-family residential homes in this neighborhood that have experienced repeated flooding, there are large areas of multi-family, commercial, and industrial properties that also have suffered from major flood events. 

In addition to these major problem areas, four other larger areas located primarily in the upper portion of the watershed experience many of the problems generally related to older subdivisions that experienced flooding during Hurricane Harvey and Ike events when floodwaters could not properly drain from the subdivisions.

Additional Information



The Harris County Flood Control District conducted high-level Watershed Planning Projects to identify strategies for mitigation of existing flooding problems in ten multiple Harris County watersheds, and to address improved drainage infrastructure required for future development. Nine watershed planning projects are funded by Harris County, the Texas General Land Office of the State of Texas, and the United States Department of Housing and Urban Development through the Community Development Block Grant Program to provide for disaster recovery and restoration of infrastructure for communities impacted by Hurricane Harvey. These include Armand Bayou, Jackson Bayou, Spring Gully, Galveston Bay, Luce Bayou, Vince Bayou, Goose Creek, Spring Creek and Willow Creek. A similar study for Carpenters Bayou is being funded through the 2018 HCFCD Bond Program. Approximately 10,000 structures flooded within these ten watersheds during Hurricane Harvey – with the most flooded structures located within Armand Bayou, Vince Bayou, and Goose Creek watersheds.

Previous Engineering Reports And Studies for this Watershed

The Flood Control District maintains a large library of engineering reports from various studies and projects related to flooding conditions across Harris County. For this watershed, these include:

  • 33 Major Engineering Studies that cover a significant area located within the watershed or involve multiple or large proposed projects.
  • 76 individual drainage study reports for small projects in the watershed.
  • 27 Geotechnical and Environmental Studies to support various project activities within the watershed.

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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.

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