Based at the University of Illinois-Urbana Champaign (UIUC), the Illinois State Geological Survey's mission is to "provide the citizens and institutions of Illinois with earth science research and information." Their website includes research reports, technical publications, downloadable maps, and hazard response information. The "Publications" area is definitely worth a look, as visitors can review the latest geological and hydrological maps, and also search their back catalog of material. More casual visitors to the site will want to click on the "Education Outreach" area. Here they will find a glossary of terms, the "Ask an Expert" feature, teacher resources, and information on public field trips led by members of the Survey. The site is rounded out by a gallery of images and a helpful site map.