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Total Maximum Daily Load and Implementation Plan for Gilleland Creek

The TMDL and its I-Plan are the road maps for activities to make Gilleland Creek safer for recreation.

Gilleland Creek near railroad bridge LCRA training event for Gilleland Creek stakeholders Gilleland Creek landscape

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Project Location and Parameters Gilleland Creek Project Navigation TMDL Program Navigation
Watershed County: Travis
: Bacteria
River Basin:
Colorado River
: 1428C

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Status and Activities

TMDL Projects


The TMDL examines the possible sources of pollution and determines a pollutant reduction target. The I-Plan, developed by stakeholders, outlines how they plan to reduce pollution and restore water quality.

Implementation Plan

The commission approved the original I-Plan on February 9, 2011.

Revised Implementation Plan

In late 2016, the Center for Public Policy Dispute Resolution (CPPDR) at the University of Texas School of Law began coordinating stakeholder involvement in a review of their I-Plan and its progress. Through a series of public meetings, CPPDR and stakeholders worked closely to revise the original I-Plan to continue their efforts in improving local water quality. The revised plan was submitted to the TCEQ on November 16, 2017.

Stakeholders will continue to meet to evaluate their progress. Comments on the I-Plan are welcome at any time throughout the year, and may be e-mailed to, with "Gilleland Creek" in the subject line.

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The commission adopted this TMDL on August 8, 2007.

The EPA approved the TMDL on April 21, 2009, at which time it became part of the state’s Water Quality Management Plan.

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Updates to TMDLs

From time to time, it is necessary to revise TMDLs to account for changing conditions in the watershed, such as new or amended permits, or urban growth, or to correct oversights in the original TMDL report. Revisions to the load allocations in TMDLs are made via the state’s 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 to the TMDLs are documented in the approved WQMP updates listed below. Files are in PDF.

Learn more about WQMP updates and about opportunities to comment on revisions to them.

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Contact the TMDL Program

Please e-mail us at, and mention the Gilleland Creek bacteria project in the subject line. Or call us at 512-239-6682.

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