Gateway site that provides "one-stop access to maps, data and other geospatial services that will simplify the ability of all levels of government and citizens to find geospatial data and learn more about geospatial projects underway." Categories of maps include:

• Administrative and Political Boundaries
• Agriculture and Farming
• Atmosphere and Climatic
• Biology and Ecology
• Business and Economic
• Cadastral
• Cultural, Society, and Demographic
• Elevation and Derived Products
• Environment and Conservation
• Geological and Geophysical
• Human Health and Disease
• Imagery and Base Maps
• Inland Water Resources
• Locations and Geodetic Networks
• Oceans and Estuaries
• Transportation Networks
• Utilities and Communication