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La Nana Bayou Watershed Characterization

A project to determine the causes and sources of pollution in La Nana Bayou.


Since 2000, La Nana Bayou has been listed in the Texas Integrated Report as impaired (not meeting Water Quality Standards) because levels of fecal bacteria have exceeded the contact recreation standard. It is also listed with concerns for ammonia, nitrate, and phosphorus.

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Project Description

The Texas Water Resources Institute (TWRI) will;

  • collect monthly water samples from three established monitoring locations on the bayou and additional samples quarterly from over 20 other locations, for one year;
  • analyze this new data and existing water quality data, to estimate how much pollution each major source, such as septic systems and livestock, is adding to the bayou;
  • provide public education programs and convene meetings in the watershed to discuss findings and consider whether to develop a plan for restoring the bayou.

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For More Information

To find out more about the NPS Program, call 512-239-6682 or e-mail us at nps@tceq.texas.gov.

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