GENERAL and EDUCATIONAL SOILS INFORMATION
Illinois Soil Classifiers Association Brochure
ISCA Multi-Year Plan
Burton W. Ray Scholarship Award in Soil Science
Soils -- Natural Resources Conservation Service
Illinois Soils -- Natural Resources Conservation Service
Teacher/Student Material -- NRCS, Illinois
Teacher/Student Material -- NRCS, National Office
Sciences of Soils -- Soils Online
The Underground Adventure -- The Chicago Field Museum of Natural History
Dig It! The Secrets of Soil -- Smithsonian Exhibit
Dirtland -- The Microbe Zoo
The Dirt on Soil -- Discovery Education
Dr. Dirt's K-12 Teaching Resources
The World of Soil
Soil Photo Gallery -- NRCS
Soils Under a Microscope
The Twelve Soil Orders -- University of Idaho

TECHNICAL SOIL RESOURCES
Hydric Soils
Field Indicators for Hydric Soils for Illinois (condensed) -- Updated!
Hydric Soils -- NRCS
Illinois Drainage Guide -- On-line

Soils and Septics
Illinois Department of Public Health -- Part 905 Private Sewage Disposal Code
Purdue Extension -- Home & Environment
Key for Septic Loading Rates (proposed)  -- Not approved -- Use for testing purposes only
Soil Suitability for On-site Sewage Design in Illinois
Understanding Your Soil Report for Septic System Suitability

Soil Survey and Classification
Glossary -- National Soils Handbook  
Glossary of Soil Science Terms
High Intensity Soil Survey Standards for Agriculture in Illinois
Key to Illinois Soils
    Alphabetical cross reference
    Numerical cross reference
National Soil Survey Center
National Soil Survey Handbook
Official Series Descriptions
Soil Datamart -- NRCS
Soil Taxonomy
    Keys to Soil Taxonomy -- All versions
Updated Soil Surveys in Illinois -- On-line (pdf manuscript)
Web Soil Survey -- NRCS

Other Soil Resources
Soil Quality Institute
Soil Productivity Index Ratings for Illinois
Earth Science Data & Services

SOIL ORGANIZATIONS
Association of Women Soil Scientists (AWSS)
International Committee on Anthropogenic Soils (ICOMANTH)
International Union of Soil Sciences (IUSS)
National Society of Consulting Soil Scientists (NSCSS)
Soil Science Society of America (SSSA)
United States Consortium of Soil Science Associations (USCSSA)
U.S. National Committee for Soil Science

PRIVATE and GOVERNMENTAL NATURAL RESOURCE ORGANIZATIONS
Illinois Natural Resources Geospatial Data Clearinghouse
Illinois State Geological Survey
Illinois Department of Natural Resources
Illinois Department of Agriculture
National Association of Conservation Districts
NRCS National Water & Climate Center -- Wetlands
Society of Wetland Scientists
Topozone
Terraserver
US Army Corps of Engineers -- Chicago District
US Department of Agriculture
US Fish and Wildlife Service
US Golf Association -- Green Section
Wetland Science Institute