Heavy rains fell across southern Illinois over the last week. Amounts of 4 to 8 inches were common in areas from Carbondale southward (see map). In addition, heavy rains fell in southern Missouri, southern Indiana, southern Ohio, and large portions of northern Kentucky. As a result, minor to major flooding was reported along the Mississippi and Ohio Rivers as well as many of their tributaries.
You can track current river observations and flood stage forecasts at NWS website: http://water.weather.gov/ahps/