Mid Cibolo Creek: A TMDL Project for Dissolved Oxygen

Counties: Comal, Guadalupe, Bexar
Parameters: Dissolved oxygen
Basin: San Antonio River
Segment: 1913
photo of Mid Cibolo Creek
Mid Cibolo Creek

Background
and Goals

In Mid Cibolo Creek in south central Texas, water quality testing found low concentrations of dissolved oxygen. The program’s South Central Texas Streams project verified the need to develop a TMDL for the creek.

Oxygen, which dissolves in water, is essential for the survival of aquatic life. While the amount of dissolved oxygen in water fluctuates naturally, various human activities can cause unusually or chronically low levels of dissolved oxygen, which may harm fish and other aquatic organisms.

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Public Participation

Project staff are informing the public about this project through a series of public meetings. The meetings are open to everyone.

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TMDL Proposed for Adoption

On July 25, 2007, the commission remanded the TMDL to the Executive Director for additional changes in response to public comment.

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Project Documents

Final reports from the assessment to determine the extent and severity of the impairments. (Provided in PDF. Help with PDF.)

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For More Information

For additional information regarding this project, please call Andrew Sullivan at 512/239-4587. Or e-mail us at tmdl@tceq.state.tx.us, and reference the Mid Cibolo Creek TMDL in the subject line.

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RELATED LINKS:

TMDLs and How They Are Implemented

South Central Texas Streams: Evaluating Water Quality for Aquatic Life and Recreation

Hydrography Maps and Data