Includes, for example, the City of Las Vegas GIS Division (maps of Las Vegas), Clark County GIS Management Office (http://www.co.clark.nv.us/ceit/gismo/gismo.htm), and USGS Digital Raster Graphic Maps of Nevada (http://www.nbmg.unr.edu/drg.html).
Links to other Geographic Information servers, including the GEOnet Names Server (http://188.8.131.52/gns/html/index.html), an international gazetteer that provides latitude and longitude but does not link to a mapping program.
The purpose of GIS Data Depot is to promote the open exchange and free transfer of geospatial data on the internet. Datasets are organized geographically, and most can be downloaded for free. Free GIS software is also available. Site is searchable.
Several GIS project files are made freely avaialble by the American Association of Petroleum Geologists (AAPG), under the direction and guidance of the GIS Publications Committee and AAPG Datapages (the publishing group for the AAPG). These GIS files are peer-reviewed and include Global Framework, Geothematic and Geographic themed projects.
A collection of biological, physical, and socio-economic data sets related to environmental science and policy issues at the global and national scale. Data visualization tools and communities of data users are available, as well as free data downloads for many data sets.