Active Weather Alerts
River Flood Warning
Issued: 1:49 AM Apr. 5, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT FROM MONDAY AFTERNOON UNTIL FURTHER NOTICE... * WHAT...Minor flooding is forecast. * WHERE...Iowa River at Marengo. * WHEN...From Monday afternoon until further notice. * IMPACTS...At 16.0 feet, Water affects agricultural land along the river. Water is several feet deep in places. * ADDITIONAL DETAILS... - At 8:00 PM CDT Saturday the stage was 12.8 feet and rising. - Forecast...The river will rise to 14.4 feet early tomorrow afternoon. It will then fall to 14.3 feet early Monday morning. It will rise above flood stage early Monday afternoon to 15.8 feet early Tuesday afternoon. It will then fall Wednesday evening. It will rise to 16.2 feet Saturday, April 11. It will then fall again but remain above flood stage. - Flood stage is 15.0 feet. &&
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