U.S. Geological Survey (USGS) Core Science Systems is working to enhance and expand information sharing and preservation by developing ScienceBase, a collaborative scientific data and information management platform used directly by scientists and data practitioners.
After going to the URL above, click on the "ArcGIS" basemap button, and notice "National Map" as the 2nd option.
Sky Bristol (firstname.lastname@example.org)
Tim Kern (email@example.com)
Natalie Latysh (firstname.lastname@example.org)