Find data sources and online maps for your geospatial program on this page. Data for GIS comes from many sources and the validity and accuracy varies widely, especially in academic sources. Never use data for legal or mission-critical work unless you know quality of the source provider. Data and maps provided here are for educational uses only and are not warranted by the GeoTech Center for accuracy or appropriateness. Use is at the sole discretion of the user only.
OpenTopography facilitates community access to high-resolution, Earth science-oriented, topography data, and related tools and resources.
Data Basin is a free, online system that connects users with spatial datasets, tools, and expertise. Individuals and organization can explore and download a vast library of datasets, upload their own data, create and publish analysis, utilize working groups, and produce customized maps that can be easily shared.
ArcGIS Online Map Gallery
ArcGIS.com is a Web site for working with maps and other types of geographic information. Visit the site to create maps; find and use maps, applications, and tools; and share your maps and applications with others. Within the site, you will find applications for building and sharing maps. You will also find useful basemaps, data, applications, and tools that you can view and use, plus communities you... More
USGS Seamless Data Server
The USGS is the nation's largest holder of GIS data and information. The Seamless server provides public access to the terrabytes of USGS data.
Water Resources of the United States
The U.S. Geological Survey (USGS) collects information needed to understand the Nation's water resources, and provides access to water data, publications, and maps, as well as to recent water projects and events.
National Weather Service GIS Data Portal
The National Weather Service produces several data sets that are available in formats available to import into Geographic Information Systems (GIS). GIS is a collection of computer hardware, software, and geographic data for capturing, managing, analyzing, and displaying all forms of geographically referenced information. It takes the numbers and words from the rows and columns in databases and spreadsheets... More
Texas Natural Resouces Information Center
TNRIS was established by the Legislature in 1968 as the Texas Water-Oriented Data Bank. In 1972, after four years of growth and diversification, it was renamed the Texas Natural Resources Information System. The mission of TNRIS is to provide a "centralized information system incorporating all Texas natural resource data, socioeconomic data related to natural resources, and indexes related to... More
National Cartography and Geospatial Center (NCGC)
National Cartography and Geospatial Center (NCGC) has long been respected for the quality of maps it produces to support various Natural Resource Conservation Service (NRCS) projects and programs. In addition to producing maps, NCGC is constantly researching new digital technologies for creating maps. New techniques and procedures are posted to the NCGC Web site and shared with our customers to use... More
Geospatial Data Gateway (GDG)
The Geospatial Data Gateway (GDG) is the One Stop Source for environmental and natural resources data, at anytime, from anywhere, to anyone. The Gateway allows you to choose your area of interest, browse and select data from our catalog, customize the format, and have it downloaded or shipped on CD or DVD.
Kentucky Geography Network
This award-winning site is the Geospatial Data Clearinghouse for the Commonwealth of Kentucky. A variety of datasets can be located and accessed, static map products can be downloaded, and many internet mapping applications and services are easily accessible via the site. Use the powerful geoportal to locate maps and geographic data content for a particular part of the state or search based... More