National

• FEMA’s National Flood Hazard Layer (Official): https://fema.maps.arcgis.com/home/item.html?id=cbe088e7c8704464aa0fc34eb99e7f30
• USGS National Map Services: https://viewer.nationalmap.gov/help/HowTo.htm

​Note: Map services will only work inside of mapping software, this generally requires creating a connection to the server and will not open properly in a web browser.​
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• EPA Services: https://geodata.epa.gov/ArcGIS/rest/services/ORD/
• U.S. Census Tiger – https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_restmapservice.html
• U.S. National Map Basemap – https://basemap.nationalmap.gov/arcgis
• U.S. National Map Services – https://services.nationalmap.gov/arcgis
• U.S. National Park Service – https://mapservices.nps.gov/arcgis
• PDF document of ​over 1,800 addresses for USA-based government GIS servers created by: Joseph Elfelt