Arroyo Colorado: A TMDL Project for Legacy Pollutants and Organics

Arroyo Colorado

Counties: Cameron and Hidalgo
Parameters: Legacy pollutants and organics in fish tissue
River Basin: Nueces-Rio Grande Coastal
Segments: 2202, 2202A

• Project Overview

On this page:

• Background and Goals
• TMDLs and Implementation Plan
• For More Information

Background and Goals

The Arroyo Colorado, an ancient distributary channel of the Rio Grande, extends 90 miles from Mission, Texas to the Laguna Madre in the Rio Grande Valley. Water quality and fish tissue analyses show that legacy pollutants occur in fish tissues in such concentrations to warrant a fish consumption advisory upstream of the Port of Harlingen. Legacy pollutants are chemicals whose use has been banned or severely restricted, but which still remain in the environment.

See Also:

---

TMDL Home

TMDL Projects

TMDL News

TMDL Calendar

Back to top

TMDLs and Implementation Plan

The commission adopted these TMDLs on July 25, 2003. The EPA approved the TMDLs on May 13, 2004, at which time they became part of the state’s Water Quality Management Plan.

• Twelve TMDLs for Legacy Pollutants in the Arroyo Colorado and Donna Reservoir and Canal
  Segments 2202 and 2202A

The commission adopted these TMDLs on January 17, 2001. The EPA approved the TMDLs on June 14, 2001, at which time they became part of the state’s Water Quality Management Plan.

• Four Total Maximum Daily Loads for Legacy Pollutants in the Arroyo Colorado Above Tidal and the Donna Reservoir and Canal System
  Segment 2202
• Response to public comment on the Arroyo Colorado TMDLs

The Commission approved this Implementation plan on September 14, 2001.

• Implementation Plan for Arroyo Colorado and Donna Reservoir and Canal Legacy Pollutant TMDLs
• Response to public comment on the Arroyo Colorado Implementation Plan

Back to top

For More Information

Send us an e-mail at tmdl@tceq.texas.gov and mention the Arroyo Colorado in the subject line, or call us at 512-239-6278.

Back to top