The Flood Warning is extended for the following rivers in Illinois. Missouri. Mississippi River at Lock & Dam 21. Mississippi River at Quincy. Mississippi River at LaGrange. Mississippi River at Mel Price LD. Mississippi River at Chester. . The Flood Warning continues for the following rivers in Illinois. Missouri. Mississippi River at Canton. Mississippi River at Winfield. Mississippi River at Saverton. Mississippi River at Hannibal. Mississippi River at Louisiana. Mississippi River at Clarksville. Mississippi River at Grafton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT. Minor flooding is forecast. * WHERE. Mississippi River at Grafton. * WHEN. From Friday afternoon until further notice. * IMPACTS. At 21.5 feet, In Portage des Sioux, MO, Le Sieur Street leading to the Marina and to Our Lady of the River Statue is flooded. * ADDITIONAL DETAILS. - At 10:30 PM CDT Monday the stage was 17.9 feet. - Forecast. The river is expected to rise above flood stage Friday afternoon and continue rising to 21.4 feet Monday, July 08. Additional rises are possible thereafter. - Flood stage is 20.0 feet.