Active Weather Alerts
River Flood Warning
Issued: 12:31 AM Sep. 21, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL MONDAY AFTERNOON... * WHAT...Minor flooding is forecast. * WHERE...Iowa River at Marengo. * WHEN...Until Monday afternoon. * IMPACTS...At 15.0 feet, Water reaches the bottom of the levee surrounding Marengo. Water affects low lying agricultural land along the river * ADDITIONAL DETAILS... - At 6:15 PM CDT Sunday the stage was 14.5 feet. - Forecast...The river is expected to rise to a crest of 15.0 feet tomorrow morning. - Flood stage is 15.0 feet. &&
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