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Arroyo Colorado Watershed: Continuing Coordination

Two projects that supported the Arroyo Colorado Watershed Partnership and its implementation efforts through February 2020.


The Arroyo Colorado watershed is in the Lower Rio Grande Valley of South Texas. Land in the watershed is predominately used for agriculture with a rapidly growing urban population. It has a freshwater segment (Segment 2202) and a tidally influenced marine segment (Segment 2201). Neither segments currently meet state water quality standards) for bacteria and dissolved oxygen.

The Arroyo Colorado Watershed Partnership was formed to address low dissolved oxygen, as well as nutrient concerns. The Partnership developed a watershed protection plan (WPP) for the Arroyo Colorado in 2007. TCEQ has since awarded the Partnership two Clean Water Act (CWA) Section 319(h) Grants, to support a watershed coordinator to manage WPP implementation.

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Project Description

These projects extended funding to the Texas Water Resources Institute (TWRI) to support the Arroyo Colorado Partnership and its WPP implementation efforts. The first phase ended in 2014. A second phase began in 2016 and ended in February 2020. With this support, the Partnership:

  • Launched the Arroyo Colorado Conservancy, a private nonprofit organization capable of developing the funds needed to continue and complete the implementation of the WPP.
  • Facilitated and encouraged stakeholder participation in implementation efforts.
  • Coordinated and conducted environmental outreach and education activities throughout the watershed.
  • Evaluated progress toward achieving milestones established in the WPP.

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For More Information

To find out more about the NPS Program, call 512-239-6682 or e-mail us at

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