35 Ill. Adm. Code 303.311
Ohio River Temperature
Section 303
Section 303.311 Ohio River
Temperature
Instead of the standards of 35
Ill. Adm. Code 302.211(e) the water temperature at representative locations in
the main river of 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 ºC (3 ºF).
ºC
ºF
ºC
ºF
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