GIS Data Downloads
The following downloadable data are available through the contributions of partnering agencies. The majority of the data and information, located in databases maintained by the partnering agencies, is accessible from this clearinghouse via hypertext links.
The USGS provides two free downloadable software tools (Dem3d and Dlgv32 viewers) for viewing digital data. For more information and downloads of the viewers, please visit the Dem3d Viewer and Dlgv32 Viewer pages.
EarthExplorer -- to query and order satellite images, aerial photographs, and cartographic products through the USGS.