GIS, Mapping, and Data Resources

Sources for Maps, Data, and Imagery

For Illinois

Digital Orthophoto Quadrangles (DOQs)
Gamma-Ray Logs Database
Historical Aerial Photographs 1936-1941
Land Cover - Maps, Data, and Statistics
Natural Resources Geospatial Data Clearinghouse
Oil & Gas (ILOIL) Internet Map Service
Water Well (ILH2O) Data
Watershed Management Clearinghouse

Illinois and Beyond

EarthExplorer – USGS Digital Data
EROS Data Center
GIS.com
Indiana GIS Atlas
Kentucky GIS Data
Library of Congress Online Map Collection
National Atlas of the United States
National Spatial Data Infrastructure (NSDI)
University of Texas-Austin, Perry-Castaneda Library Map Collection
Wisconsin State Cartographer Imagery

GIS Organizations, Newsletters, Miscellaneous

ESRI Geography Network
Federal Geographic Data Committee
GISCafé - a good link for GIS info
GIS.com - a portal to GIS information on the Web
GIS Development - Geospatial Resource Portal - links to many GIS sites and over 1000 GIS and geospatial research papers
Illinois GIS Association (ILGISA)
MapCruzin - Free GIS mapping program software and resources
Open Source GIS - open source and free GIS software links
U.S. Naval Observatory GPS Time Transfer
U.S. Army Corps of Engineers Research Lab - Geographic Resources Analysis Support System (GRASS) - free GIS software

Updated 9/28/2009 SLD