“...By thy rivers gently flowing,
Illinois, Illinois.”
CLEAN WATER
The Illinois EPA through its Bureau of Water
oversees programs to protect and improve the
state’s surface and groundwater, as well as the
development, construction and operation of
facilities to collect, treat and discharge sewage,
oversight for the development, construction and
operation of drinking water treatment plants, low
interest loans to fund these projects, and
administers a variety of federal permit and grant
programs to ensure safe use of Illinois waters
recreationally and as essential components of
good health and a healthy state environment.
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BIENNIAL REPORT 2009-2010 • ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
Watershed Basin Number and Name
1. Great Lakes/Calumet
2. Des Plaines
3. Upper Fox
4. Lower Fox
5. Kishwaukee
6. Rock
7. Pecatonica
8. Green
9. Mississippi North
10. Kankakee/Iroquois
11. Upper Illinois/Mazon
12. Vermilion (Illinois)
13. Middle Illinois
14. Mackinaw
15. Spoon
16. Mississippi North Central
17. La Moine
18. Lower Illinois/Macoupin
19. Mississippi Central
20. Lower Sangamon
21. Upper Sangamon
22. Salt Creek of Sangamon
23. Upper Kaskaskia
24. Middle Kaskaskia/Shoal
25. Lower Kaskaskia
26. Big Muddy
27. Mississippi South Central
28. Mississippi South
29. Vermilion (Wabash)
30. Embarras/Middle Wabash
31. Little and Lower Wabash/Skillet Fork
32. Saline River/Bay Creek
33. Cache
