The University of Arkansas Library offers the Guide to Mostly On-Line and Mostly Free US Geospatial and Attribute Data Web site. The main page contains a list of every state and related links to available geospatial and attribute data. For example, Wisconsin contains over twenty sites from a variety of sources such as the US Geological Survey and the Wisconsin Department of Transportation. Besides...

Most people are familiar with the work of the United States Geological Survey (USGS) as it relates to describing and analyzing everything from tectonic activity to mineral deposits around the United States. People may be less familiar with their work as it relates to emergency management. This website provides information about their work to support the National Response Framework emergency...

The US Geological Survey Geographic (USGS) Data Download Web site contains a large selection of downloadable digital elevation models (DEM) in various formats. Visitors will find links to 1:250,000 Scale Digital Elevation Models, 1:24,000 Scale Digital Elevation Models, 30 Meter Resolution National Elevation Dataset, 1:2,000,000 Digital Line Graphs, 1:100,000 Scale Digital Line Graphs, 1:24,000...