- USGS National Map (geology and topography)
- NOAA – National Centers for Environmental Information (ocean and atmosphere)
- NOAA – National Marine Fisheries Services (essential fish habitat)
- NASA – Earth Observatory (global maps)
- NASA – Earth Observatory (images from above)
- Environmental Protection Agency – EnviroAtlas (diverse environmental data)
- U.S. Department of Transportation – Bureau of Transportation Statistics (infrastructure and boundaries)
- U.S. Census Bureau – Geography Program (population maps and data visualization)
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U.S. Department of the Interior