Surface Water Monitoring Data

Sampling Data Definition

The TCEQ monitors the quality of surface water to evaluate physical, chemical, and biological characteristics of aquatic systems with reference to human health concerns, ecological condition, and designated uses. Data provide a basis for effective policies that promote the protection, restoration, and wise use of surface water in Texas.

TCEQ Sampling Data Query, Surface Water Quality Monitoring

Access Water Quality Data

Use H-GAC's Water Resources Information Map (WRIM) to locate Regional Monitoring Stations and access Water Quality Data.

Download TCEQ Quality Assured Datasets

Datasets on this page contain TCEQ Quality Assured ZIP data files for the seven assessment basins that intersect the H-GAC Region. Data can be downloaded as a text file.

Surface Water Monitoring Data by Basin

H-GAC updates the datasets occasionally throughout the year. If data prior to January 1, 1998 is needed, please reach out. For field descriptions and data reformatting instructions, please see Data Field Descriptions and Use.

Surface Water Monitoring Data by County