A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. 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 Watch for the following rivers in Illinois... Illinois River at Ottawa affecting La Salle zone. * WHAT...Flooding is possible. * 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 461.0 feet, River Rescue boat dock inundated in Ottawa. At 462.5 feet, Roadway entrance to Allen Park threatened in Ottawa. Allen Park west boat ramp inundated in Ottawa. * ADDITIONAL DETAILS... - At 12:30 PM CDT Monday the stage was 461.6 feet. - Forecast...The river may crest above flood stage by Wednesday morning. - Flood stage is 463.0 feet. - http://www.weather.gov/safety/flood