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What are the Terms of Use/Licensing for map services and data from The National Map?

Map services and data downloaded from The National Map are free and in the public domain. There are no restrictions; however, we request that the following acknowledgment statement of the originating agency be included in products and data derived from our map services when citing, copying, or reprinting:

"Map services and data available from U.S. Geological Survey, National Geospatial Program." 

Learn more: USGS Copyrights and Credits statement