Last Updated:  January 2010

If you do not already know what watershed you are located in, go to http://cfpub.epa.gov/surf/locate/index.cfm, and follow the instructions.

The name of the watershed that comes up when you click on the river is the name of the file listed below.

Important Notes:

• This data is separated based on United State Geologic Survey Hydrologic Unit Codes ranging from 12 digits to 8 digits. In place of the 4 digit HUC name, Texas Stream Team has provided the major watersheds as designated by the Texas Commission on Environmental Quality since there is a discrepancy in the naming of the watersheds between the two organizations.
• The sub-watershed column is the 12 digit number. The tab name on the bottom of the spreadsheet is the 10 digit number. The file name is the 8 digit number.
• All data sets from the “Flow” column to the right are field observations and should be referenced to the Field Observations Key provided.

Bays and Estuaries

Brazos River Basin

Brazos - Colorado Coastal Basin

Canadian River Basin

Colorado River Basin

Cypress Creek Basin

Guadalupe River Basin

Lavaca River Basin

Neches River Basin

Red River Basin

Sabine River Basin

San Antonio River Basin

San Jacinto River Basin

San Jacinto - Brazos Coastal

Sulphur River Basin

Trinity River Basin