Colored map compiled by merging geologic and topographic maps of the United States through computer processing and enhancement with links to panoramic movie using QuickTime, descriptions of features, and a game entitled Puzzle of Regions.
Explains 16 distinct types of scientific information that are needed to understand climate change, including the specific parameters measured, why they are needed, who measures them, and the type and amount of information that are not yet available.
Because of its origin in natural resource surveys and the similarity of the USGS mission to Thomas Jefferson's charge to Meriwether Lewis, the USGS can be seen as the organizational successor to Lewis and Clark.
Homepage describing The National Map, which will produce a seamless, continuously maintained set of public domain geographic base information, with links to map viewer, pilot projects, reports, fact sheets, and national atlas.
National Map Viewer, a GIS application, is a Web-enabled portal to the geospatial information contained in The National Map. It supports on-line access and allows the download of digital data and creation of cartographic products.
Description of the The National Map project intended to provide a seamless, integrated, and continuously maintained set of geographic base information for easily accessible, up-to-date, accurate mapping of the United States.