1931 to 1972

1. Land Use and Environmental Regulations
2. Land Use Regulations
3. Federal Water Pollution Control Act
4. Lowering of the Illinois River - Supreme Court Ruling
5. Oxygen Saturation and Dissolved Oxygen
6. Soil Erosion and Sedimentation
7. History
8. Turbidity
9. Impacts of Turbidity
10. Bottom Fauna
11. Aquatic Vegetation
12. Water Quality
13. Fish
14. Fish Kills
15. Navigation Dams
16. Flooding