Section Contents

Aerial Imagery
Starting in 2002, the Houston-Galveston Area Council began facilitating, along with the Geographic Data Committee, the acquisition of aerial imagery data for the greater Houston-Galveston region on a biannual basis. The goal of the program is to continue to provide this service in the future, and expand it to include all of the 13 counties in the H-GAC region, depending on demand.
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GIS Data Clearinghouse
The Houston-Galveston Area Council provides much of its vector data on this page for free download. The data are available in individual shapefiles to serve a wider variety of applications. Most of the data covers only the H-GAC region; however, several are statewide, as noted.
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Land Use & Land Cover
Parcel-based land use GIS datasets are available for the following counties: Harris, Montgomery, Fort Bend, Brazoria, Galveston, Liberty, Waller, Austin, and Walker. To obtain access to our FTP server to download this data, please complete the H-GAC Data Request Terms & Conditions Form provided by the link below, and return it to the person listed on the form. Upon receipt and approval, you will be provided with a URL from which the data can be downloaded.
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STAR*Map
The acronym STAR*Map is the trademarked name for the Southeast Texas Addressing and Referencing Map. Created and maintained by the Houston-Galveston Area Council and the Geographic Data Committee, STAR*Map is a digital basemap and database that covers a multi-county region, including Austin, Brazoria, Fort Bend, Galveston, Harris, Liberty, Montgomery, Waller, Wharton, Chambers, Colorado, Matagorda and Walker Counties.
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LIDAR
2008 LiDAR Digital Elevation Models are now available for portions of the H-GAC region. This product includes 5-foot pixel DEMs, 1-foot contour lines, and several other deliverables. 2006 DEMs for coastal counties are also available.
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Water Quality Data
Look at Regional Quality Assurance Project Plans and Surface Monitoring Data. Use our "Water Resources Information Map" to access water quality data.
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GIS Data