...The Flood Warning continues for the following rivers in Iowa... Winnebago River at Mason City affecting Floyd, Worth and Cerro Gordo Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...The Winnebago River at Mason City, or from Beaver Creek near Fertile to the Shell Rock River near Rockford. * WHEN...Until tomorrow evening. * IMPACTS...At 11.0 feet, Sandbagging occurs on the dike from 12th St NE to Carolina St. * ADDITIONAL DETAILS... - At 9:15 AM CDT Tuesday the stage was 11.1 feet. - Forecast...The river is expected to fall below flood stage early tomorrow afternoon and continue falling to 7.6 feet Tuesday, August 26. - Flood stage is 10.0 feet.