...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Kishwaukee River near Perryville affecting Winnebago County. For the Kishwaukee River...including Perryville...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Kishwaukee River from Confluence with South Branch Kishwaukee River downstream to the Rock River, including the Perryville gauge. * WHEN...Until just after midnight tonight. * IMPACTS...At 12.0 feet, Water overtops low-lying banks in Blackhawk Springs Forest Preserve and in south Rockford near Chicago Rockford International Airport. Trails threatened at Blackhawk Springs Forest Preserve. * ADDITIONAL DETAILS... - At 10:30 AM CDT Friday the stage was 11.5 feet. - Recent Activity...The river climbed overnight to near flood stage. - Forecast...The river is expected to crest near flood stage this afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood