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You are here: Home / Water Quality / Total Maximum Daily Load Program / Lower Leon Creek: Evaluating Water Quality to Protect Aquatic Life

Lower Leon Creek: Evaluating Water Quality to Protect Aquatic Life

A current project to examine the causes of low dissolved oxygen in the stream and determine the appropriate strategy for protecting aquatic life.
photo of Lower Leon Creek Below the site of Kelly Air Force Base
Leon Creek below the Kelly Air Force Base site


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County: Bexar
Parameter: Dissolved Oxygen
RiverBasin: San Antonio
Segment: 1906

Background and Goals

Leon Creek runs from its headwaters in northern Bexar County to its confluence with the Medina River. The creek generally flows south and enters the main portion of Kelly Air Force Base from the northwest, near the intersection of Billy Mitchell Road and Westover Road. Its watershed includes highly urbanized residential areas and the Kelly and Lackland air force bases.

In 2006, TCEQ assessment indicated that low dissolved oxygen concentrations in the creek are not optimal. Oxygen gas, 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 chronically low levels of dissolved oxygen.

Staff of this project are examining the causes of low dissolved oxygen in the stream in order to determine the appropriate strategy for protecting aquatic life.

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Get Involved

In all its projects, the TCEQ seeks opinions and information from people who represent government, permitted facilities, agriculture, business, environmental, and community and private interests in the watershed. TCEQ staff will inform people about this project through meetings and notices. All public meetings about the project are open to anyone interested.

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For More Information

Please send an e-mail to tmdl@tceq.texas.gov, and mention the Lower Leon Creek aquatic life project in the subject line. Or call us at 512-239-6682.

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