Maps/GIS Resources
Below are links to map and GIS resources related to the Illinois River and its watershed available on the Web. These sites are the general entry points to collections of geospatial resources. Many of the data sets found in the ILRDSS are hosted by these agencies.
- Illinois Natural Resources Geospatial Data Clearinghouse
- Managed by the Illinois State Geological Survey, this site is one of the largest warehouses for geospatial data for the state of Illinois. Data sources include DOQQs, DRGs, and thematic vector data sets.
- Illinois State Water Survey GIS Resource Page
- A general resource site for GIS activities at the ISWS.
- USGS National Map Information
- The entry page for the USGS's geospatial data resources.
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