The Flood Warning is extended for the following rivers in Illinois. Missouri. Kaskaskia River at New Athens. Mississippi River at Chester. Mississippi River at Lock & Dam 21. . The Flood Warning continues for the following rivers in Missouri. Illinois. Meramec River near Arnold. Mississippi River at LaGrange. Mississippi River at Canton. Mississippi River at Mel Price LD. Illinois River at Hardin. Cuivre River at Old Monroe. Mississippi River at Grafton. Mississippi River at Quincy. Mississippi River at Winfield. Mississippi River at Saverton. Mississippi River at Hannibal. Mississippi River at Louisiana. Mississippi River at Clarksville. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Mississippi River at LaGrange. * WHEN. Until early Wednesday afternoon. * IMPACTS. At 18.1 feet, Wharf Street begins flooding at this height just upstream from the Consolidated Grain & Barge plant. * ADDITIONAL DETAILS. - At 8:00 PM CDT Friday the stage was 18.3 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 8:00 PM CDT Friday was 18.5 feet. - Forecast. The river is expected to fall below flood stage Tuesday morning and continue falling to 15.3 feet Friday, July 26. - Flood stage is 17.0 feet.