For details about a specific data set, see the Contact or Distribution Information in the associated documentation (metadata).
This Clearinghouse is maintained by the Illinois State Geological Survey (ISGS).
ISGS business hours are from 8:00 a.m. to 5:00 p.m. Central Standard Time, Monday through Friday.
Web Related Inquiries
For general inquiries associated with this web site, e-mail Sheena Beaverson at email@example.com or call 217/244-9306.
Purchase PLSS data, or
Request a paper copy of the USGS 7.5 Minute Topographic Map Index
ISGS Information Office
- ISGS Information Office hours are from 8:15 to Noon, Central Standard Time, Monday through Friday.
- Phone 217/244-2414
- ISGS Mailing Address
- Illinois State Geological Survey
- 615 East Peabody Drive
- Champaign, Illinois 61820