Severe · Flood WarningActive alert
Flood Warning issued September 20 at 7:31PM CDT until September 23 at
Affecting Johnson, IA; Louisa, IA; Washington, IA
In effect until: Sep 22, 2026, 12:45 AM
Johnson, IA; Louisa, IA; Washington, IA
Confirmed across 3 counties in IA; expires 12:45 AM.
Avoid flooded areas. Move to higher ground if water is rising near you.
Read the original bulletin (official text)
...The Flood Warning continues for the following rivers in Iowa... Iowa River at Marengo affecting Benton and Iowa Counties. Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. English River at Kalona affecting Washington and Johnson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Iowa River near Lone Tree. * WHEN...Until Wednesday afternoon. * IMPACTS...At 18.0 feet, Sand Road closes south of 520th Street to the Highway 22 intersection. * ADDITIONAL DETAILS... - At 7:00 PM CDT Sunday the stage was 16.1 feet. - Forecast...The river will fall below flood stage just after midnight tonight to 15.6 feet early tomorrow afternoon. It will then rise above flood stage tomorrow evening to 17.6 feet early Tuesday afternoon. It will fall below flood stage again late Wednesday morning. - Flood stage is 16.0 feet.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™