Implementation Plan and Total Maximum Daily Load for Lake O' the Pines
The TMDL and its I-Plan are the road maps for activities to improve conditions for aquatic life in the lake.



Project Location and Parameters | Project Navigation | TMDL Program Navigation |
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Watershed Counties: Cass, Harrison, Marion, Morris, Upshur |
Approved I-Plan
On July 9, 2008, the Commission approved the I-Plan for Lake O’ the Pines.
- Implementation Plan for One Total Maximum Daily Load for Dissolved Oxygen in Lake O’ the Pines, Segment 0403
- Response to Public Comment on the I-Plan
Revised I-Plan
Texas Water Resources Institute (TWRI) worked closely with stakeholders to revise the original I-Plan to continue their efforts in improving water quality.
- 2014 Revised Implementation Plan for Lake O' the Pines
Adopted TMDL
On April 12, 2006, the Commission adopted the TMDL for Lake O’ the Pines. The Texas State Soil and Water Conservation Board approved it on March 23, 2006. EPA approved the TMDL on June 7, 2006, at which time it became part of the state’s Water Quality Management Plan.
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One Total Maximum Daily Load for Dissolved Oxygen in Lake O’ the Pines
Segment 0403 - Response to Public Comment on the TMDL
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 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). TCEQ reviews all applications for new and amended permits for conformance with applicable portions of the WQMP, including adopted TMDLs.
Revisions to the TMDL are documented in the approved WQMP updates listed below.
- January 2016 , Appendix VIII, pages 21-22
- October 2015 , Appendix IV, pages 12-13
- January 2009 , pages 10-12
- October 2009 , page 14
Learn more about WQMP updates and opportunities to comment on them.
Contact the TMDL Program
Please email tmdl@tceq.texas.gov and mention Lake O’ the Pines in the subject line. Or call us at 512-239-6682.
