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County GIS Websites
Clinton County GIS
Madison
County GIS
Randolph
County GIS
St.
Clair County GIS
State Websites
Illinois Department of Transportation
Illinois
Natural Resources Geospatial Data Clearinghouse
Illinois Geographic Information
Council
Illinois
Natural History Survey Geographic Information System
Missouri Spatial Data Information
System
Missouri Department
of Natural Resources
Missouri Resource Assessment
Partnership
Federal Websites
Federal
Geographic Data Committee (FGDC)
U.S. Fish and Wildlife
Environmental Conservation Online
U.S.G.S. - SAST Database: An
Environmental Information System for the Upper Mississippi and Lower Missouri
River Basins
U.S.G.S. – GIS
Data for water resources
U.S. Bureau
of Census
TIGER Boundary
Files
EPA EnviroMapper
National Agricultural
Library Digitop Library
Industry Websites
Environmental Systems Research Institute, Inc. sponsored sites:
Free Resources-
Creator of the ArcView GIS software, ESRI provides a user forum, online
technical resources, available custom programming and links to public
datasets.
Geography Network
- Global network of geographic data and resources sponsored by ESRI
Download
ArcView software updates, additional extensions, and utilities
Download ArcExplorer 2
Geo Community (not
all free)
General Mapping
National Geographic
Society
Library
of Congress National Map Library
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