Section 303.361  Mississippi River South Temperature

Instead of the standards of Section 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 shall 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.  Moreover, at no time shall the water temperature at such locations exceed the maximum limits in the following table by more than 1.7° C (3° F).