The Center for Advanced Spatial Technologies at the University of Arkansas "brings together the considerable expertise of a network of researchers with a long-standing history of GIS development at the University." Visitors of the site will find links to geo-data delivery systems, interactive mapping programs, reports and publications, and a wide array of other geographical information related to...

Described as The Nation's Topographic Map for the 21st Century, the National Map "will be a seamless, continuously maintained set of public domain geographic base information that will serve as a foundation for integrating, sharing, and using other data easily and consistently." The USGS site explains why such a program is needed -- including the agencies role; their vision for the project; its...