Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 303 - WATER USE DESIGNATIONS AND SITE-SPECIFIC WATER QUALITY STANDARDS
Subpart C - SPECIFIC USE DESIGNATIONS AND SITE SPECIFIC WATER QUALITY STANDARDS
Section 303.361 - Mississippi River South Temperature

Universal Citation: 35 IL Admin Code ยง 303.361
Current through Register Vol. 48, No. 38, September 20, 2024

Instead of the standards of 35 Ill. Adm. Code 302.211(e), the water temperature at representative locations in the main river of the Mississippi River from the Kaskaskia River to the Ohio River must not exceed the maximum limits in the following table during more than 1% of the hours in the 12-month period ending with any month. The water temperature at these locations must not at any time exceed the maximum limits in the following table by more than 1.7°C (3 °F).

°C

°F

°C

°F

JAN.

10

50

JUL.

32

89

FEB.

10

50

AUG.

32

89

MAR.

16

60

SEPT.

31

87

APR.

21

70

OCT.

26

78

MAY

27

80

NOV.

21

70

JUN.

31

87

DEC.

14

57

Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.