Houston-Galveston Region: I-Plan and TMDLs



Project Location and Parameters | Houston–Galveston BIG Project Navigation | TMDL Program Navigation |
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Parameter: Bacteria River Basin: San Jacinto, San Jacinto–Brazos Coastal |
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TMDL Home |
Implementation Plan
The commission approved the implementation plan on January 30, 2013. This plan was developed by stakeholders in the Bacteria Implementation Group (BIG)
This plan originally implemented 72 TMDLs for 60 waterway segments in 10 counties. Other TMDLs and water bodies have since been added. The TMDLs for Armand Bayou were added to the BIG I-Plan by vote of the BIG and the Armand Bayou stakeholders in 2014; the commission approved this action in 2015. The TMDLs for San Jacinto River were added by vote of the BIG and the San Jacinto stakeholders in 2015; the commission approved this action in 2016. The TMDL for Jarbo Bayou was added to the BIG I-Plan by vote of the BIG and the Jarbo Bayou stakeholders in 2015; the commission approved this action in 2018. Several TMDLs have also been added by addenda to the original TMDLs.
TMDLs
On the date of their approval by EPA, all these TMDLs became part of the state’s Water Quality Management Plan.
- Armand Bayou
The commission adopted these TMDLs on August 5, 2015. The EPA approved them on October 2, 2015. The EPA approved Addendum I to the TMDLs on February 22, 2019. - Brays Bayou watersheds
The commission adopted these TMDLs on September 15, 2010. The EPA approved them on September 27, 2010. The EPA approved an addendum to the TMDLs in August 2013. - Buffalo and Whiteoak Bayous
The commission adopted these TMDLs on April 8, 2009. The EPA approved them on June 11, 2009. The EPA approved Addendum I to the TMDLs in August 2013. The EPA approved Addendum II to the TMDLs in July 2015. - Clear Creek
The commission adopted these TMDLs on September 10, 2008. The EPA approved them on March 6, 2009. The EPA approved an Addendum I to the TMDLs in March 2013. The EPA approved Addendum II to the TMDLs on February 22, 2019. - Eastern Houston watersheds
The commission adopted these TMDLs on September 15, 2010. The EPA approved them on September 27, 2010. The EPA approved Addendum I to the TMDLs in August 2013. The EPA approved Addendum II to these TMDLs on February 22, 2019. - Greens Bayou
The commission adopted these TMDLs on June 2, 2010. The EPA approved them on August 12, 2010. - Halls Bayou
The commission adopted these TMDLs on September 15, 2010. The EPA approved them on September 27, 2010 - Jarbo Bayou
The commission adopted this TMDL on January 24, 2018. The EPA approved the TMDL on March 29, 2018. - Lake Houston Upstream Watersheds
The commission adopted these TMDLs on April 6, 2011. The EPA approved them on June 29, 2011. The EPA approved an addendum to the TMDLs in February 2014. - San Jacinto River, East and West Forks; Lake Houston; and Crystal Creek
The commission adopted these TMDLs on August 24, 2016. The EPA approved them on October 7, 2016. The EPA approved Addendum I to the TMDLs on February 22, 2019. - Sims Bayou
The commission adopted these TMDLs on September 15, 2010. The EPA approved them on September 27, 2010. The EPA approved an addendum to the TMDLs in August 2013.
Revisions to TMDLs
From time to time, it is necessary to revise TMDLs to account for changing conditions in the watershed. Revisions to the load allocations in TMDLs are made via the state’s Water Quality Management Plan (WQMP), which is updated quarterly.
The WQMP provides projected effluent limits for use in planning and permitting activities under the Texas Pollutant Discharge Elimination System (TPDES). The TCEQ reviews all applications for new and amended permits for conformance with applicable portions of the WQMP, including adopted TMDLs.
Revisions are made to TMDLs in one of two ways:
- Updates are made to account for changing conditions in the watershed, such as new or revised wasteload allocations, permits that have been canceled or have expired, or changed facility names.
- Addenda are created to add load allocations for assessment units that are impaired by the same pollutant or condition, within the same watershed as in the original TMDL report.
Revisions to the TMDLs are documented next to the original TMDL report. Both updates and addenda are provided in the same units of measure used in the original TMDL.
Summary Table of TMDLs, Addenda, and Updates
All linked files in the table below are provided in PDF
TMDLs | Addenda | Updates |
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Armand Bayou Six Total Maximum Daily Loads for Indicator Bacteria in Armand Bayou |
Submitted in the October 2018 Update to the WQMP. EPA approved February 2019. |
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Brays Bayou Five Total Maximum Daily Loads for Indicator Bacteria in Brays Bayou Above Tidal and Tributaries |
Submitted in the April 2013 Update to the WQMP. EPA approved August 2013. |
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Buffalo and Whiteoak Bayous Eighteen Total Maximum Daily Loads for Bacteria in Buffalo and Whiteoak Bayous and Tributaries Response to Public Comment on the Buffalo and Whiteoak Bayous TMDLs |
Submitted to EPA in the April 2013 Update to the WQMP. EPA approved August 2013. TMDL Addendum II: One TMDL for Bacteria in Rolling Fork Creek Submitted to EPA in the April 2015 Update to the WQMP. EPA approved July 2015. |
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Clear Creek Nine Total Maximum Daily Loads for Bacteria in Clear Creek and Tributaries |
Submitted in the October 2012 Update to the WQMP. EPA approved March 2013. TMDL Addendum II: One TMDL for Indicator Bacteria in Mary's Creek Bypass Submitted in the October 2018 Update to the WQMP. EPA approved February 2019. |
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Eastern Houston Watersheds Thirteen Total Maximum Daily Loads for Indicator Bacteria in Eastern Houston Watersheds Response to Public Comment on the Eastern Houston Watersheds TMDLs |
Submitted in the April 2013 Update to the WQMP. EPA approved August 2013. |
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Greens Bayou Eight Total Maximum Daily Loads for Indicator Bacteria in Greens Bayou Above Tidal and Tributaries |
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Halls Bayou and Tributaries Four Total Maximum Daily Loads for Indicator Bacteria in Halls Bayou and Tributaries |
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Jarbo Bayou One Total Maximum Daily Load for Indicator Bacteria in Jarbo Bayou |
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Lake Houston Upstream Watersheds Fifteen Total Maximum Daily Loads for Indicator Bacteria in Watersheds Upstream of Lake Houston Response to Public Comment on the Lake Houston Upstream Watersheds TMDLs |
Submitted in the October 2013 Update to the WQMP. EPA approved February 2014.
Submitted in the October 2019 Update to the WQMP. EPA approved March 11, 2020. |
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San Jacinto River, East and West Forks; Lake Houston; and Crystal Creek Seven Total Maximum Daily Loads for Indicator Bacteria in the East and West Forks of the San Jacinto River, Lake Houston, and Crystal Creek Watersheds Response to Public Comment on the East and West Fork San Jacinto River TMDLs |
Submitted in the October 2018 Update to the WQMP. EPA approved February 2019. |
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Sims Bayous and Tributary Four Total Maximum Daily Loads for Indicator Bacteria in Sims Bayou Above Tidal and Tributary |
Submitted in the April 2013 Update to the WQMP. EPA approved August 2013. |
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For More Information
For more information regarding this project, please e-mail us at tmdl@tceq.texas.gov, and mention the Houston-Galveston bacteria project in the subject line. Or call us at 512-239-6682.
