>> Questions or Comments: tmdl@tceq.texas.gov
You are here:

TMDLs and Implementation Plan: Greater Trinity Region

The TMDL and its I-Plan are the road maps for activities keeping the river segment safe for recreation.
fishing at Lower West Oakland Lake Trinity River Segment 0841 at Collins Street heron on the Trinity River

visual spacer

Project Location and Parameters Greater Trinity Project Navigation TMDL Program Navigation

Watershed Counties: Dallas, Tarrant
Parameter: Bacteria
River Basin: Trinity
Segments: 0805, 0806E,0822A, 0822B, 0841, 0841B, 0841C, 0841E, 0841F, 0841G, 0841H, 0841J, 0841K, 0841L, 0841M, 0841N, 0841R, 0841T, 0841U, 0841V

back arrowBack to Greater Trinity Region Main Page

Status and Activities

Reports and Other Documents

TMDL Projects


On this page:

TMDLs in Development

The public comment period has closed for the draft TMDL linked below. If adopted, the stakeholders propose to implement the Sycamore Creek TMDL under the Greater Trinity River Region I-Plan, and the TMDL will become part of the state's Water Quality Management Plan.

Supporting Documents:

return to top Return to top

Approved I-Plan

On December 11, 2013, the commission approved the I-Plan developed by the stakeholders.

By resolution in June 2015, the stakeholder Coordination Committee added four tributary segments (0841F, 0841K, 0841N, and 0841V) of Mountain Creek Lake to this project. The revised I-Plan dated June 2018 includes these tributaries.

return to top Return to top

Adopted TMDLs

On the date of their approval by the Environmental Protection Agency (EPA), all these TMDLs become part of the state’s Water Quality Management Plan.

Cottonwood Branch and Grapevine Creek

On September 21, 2011, the TCEQ adopted the TMDLs for Cottonwood Branch and Grapevine Creek. The EPA approved them on May 30, 2012.


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. Updates are made via the state's Water Quality Management Plan.

return to top Return to top

Lower West Fork Trinity River

On September 24, 2013, the TCEQ adopted these TMDLs. The EPA approved them on November 7, 2013.

return to top Return to top

Mountain Creek Lake Upstream Watersheds

On November 2, 2016, the commission adopted these TMDLs. The EPA approved them on December 7, 2016.

return to top Return to top

Upper Trinity River

On May 11, 2011, the TCEQ adopted these TMDLs for the Upper Trinity River. The EPA approved them on August 3, 2011.

return to top Return to top

Contact Us

Please e-mail us at tmdl@tceq.texas.gov, and mention the Greater Trinity River plan in the subject line. Or call us at 512-239-6682.

return to top Return to top

communities working together taking care of our rivers, lakes, and bays