These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Tuesday morning.

The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Illinois River at Ottawa affecting La Salle County. For the Illinois River (Upper)...including Ottawa...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Illinois River from Heritage Harbor east of Ottawa downstream to Starved Rock Lock and Dam, including the Ottawa gauge. * WHEN...From late tonight until further notice. * IMPACTS...At 462.5 feet, Roadway entrance to Allen Park threatened in Ottawa. Allen Park west boat ramp inundated in Ottawa. At 464.0 feet, Backwater causes the Fox River to reach bankfull near St. Elizabeth Medical Center in Ottawa. * ADDITIONAL DETAILS... - At 3:30 PM CDT Monday the stage was 462.0 feet. - Forecast...The river is expected to rise above flood stage tonight to a crest near 464.0 feet on Wednesday. - Flood stage is 463.0 feet. - http://www.weather.gov/safety/flood