The Flood Warning is extended for the following rivers in Illinois. Pecatonica River near Shirland affecting Winnebago County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. . The Flood Warning continues for the following rivers in Illinois. Rock River at Byron affecting Ogle County. For the Rock River. including Rockton, Latham Park, Byron. Moderate flooding is forecast. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Rock River from Confluence with Kishwaukee River to Castle Rock State Park near Oregon, including the Byron gauge. * WHEN. Until Friday morning. * IMPACTS. At 13.5 feet, Numerous low-lying structures downstream of Byron are flooded. * ADDITIONAL DETAILS. - At 8:15 PM CDT Wednesday the stage was 13.6 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 8:15 PM CDT Wednesday was 13.8 feet. - Forecast. The river is expected to fall below flood stage early Friday morning. - Flood stage is 13.0 feet. - http://www.weather.gov/safety/flood