Geographic Information Systems (GIS)
Topic pages contain background information in many formats. It also pulls in resources from other Excelsior Library databases, making it a one-stop place to brush up on your topic!
Geospatial
"Of or relating to analysis of geographical data from multiple sources and technologies, using statistical methods and often resulting in computer visualization of locations under study."
GIS Data Recommended Resources
ArcGIS Online
Provides access to maps and data in an online application where content can be download or used in their free Map Viewer. Note: There is a free trial available
This online repository is the largest collection of geospatial data where anyone can view many of the resources without becoming a member.
National Map
An excellent resource to explore and retrieve data. U.S. Geological Survey (USGS) and the Earth Resources Observation and Science (EROS) geospatial data.
This website provides free downloads of national base layers, as well as other geospatial data layers. These layers are divided into framework categories.
