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USGS Topographic Map Viewer

View the USGS Topographic Maps of regulated zones in an interactive online map viewer.

Note: As of August 2013, the TCEQ USGS Topographic Map Viewer is no longer available. The USGS topographic maps are now a common basemap included in many of our newer viewers. In the these new viewers, the measure tools (selecting the point category) can be used to acquire coordinates.

Below is a list of TCEQ map viewers containing the USGS Topos:

  • Edwards Aquifer Map Viewer
  • GeoTAM Viewer
  • Source Water Assessment Viewer
  • Surface Water Quality (Segments) Viewer
  • Water Utilities Map Viewer
  • Water Well Report Viewer


The TCEQ U.S. Geological Survey (USGS) Topographic Map Viewer was designed to display the 7.5-Minute USGS Topographic Maps for the State of Texas using an Internet browser. With this viewer, not only can you view and print USGS Topographic Maps, but you can also determine the exact Latitude and Longitude of any feature visible on the topographic maps. These coordinates are automatically converted to the North American Datum of 1983 (NAD83). Several reference map layers such as counties, roads, cities, and rivers have been provided to help guide you to your area of interest. In addition, the 7.5-minute quadrangle index as well as the quarter quad index have been included to help determine the names and numbers for specific quads.