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This summer, we are working to upgrade the research experience by making ongoing improvements to our Research Guides.
You may encounter changes in the look and feel of the Research Guides website along with structural changes to our existing guides. If you have any questions or concerns about this process please let us know.

Digital Maps

This is a guide to the discovery and usage of digital maps,

The National Map

The National Map is the nation's premier digital map and is produced by the USGS (United States Geological Service). The National Map Viewer (TNM Viewer) is the one-stop destination for visualizing all the latest National Map data.  It uses easy-to-navigate foundational base maps and makes it simple to interact with all the data themes that can be incorporated by users to create their own maps.