Flood Warning — Johnson County, Iowa
Flooding is occurring or imminent along rivers, streams, or low-lying areas.
Current Status
🌊 Active: Flood Warning
Flood Warning issued August 14 at 9:49PM CDT until August 17 at 4:23PM CDT by NWS Quad Cities IA IL
...The Flood Warning continues for the following rivers in Iowa... Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. English River at Kalona affecting Johnson and Washington Counties. * WHAT...Moderate flooding is forecast. * WHERE...English River at Kalona. * WHEN...From late tonight to Monday morning. * IMPACTS...At 16.0 feet, water begins approaching several county roads. Agricultural land near the river is flooding. * ADDITIONAL DETAILS... - At 9:00 PM CDT Friday the stage was 10.5 feet. - Forecast...The river is expected to rise above flood stage late tonight to a crest of 16.8 feet tomorrow evening. It will then fall below flood stage Monday morning. - Flood stage is 14.0 feet.
Effective August 14, 2026 at 10:49 PM ET · Expires August 15, 2026 at 11:00 PM ET
Event Details
Event Type
Flood Warning
Severity
severe
Issued By
NWS Quad Cities IA IL
Expires
August 15, 2026 at 11:00 PM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued by Saturday evening.
Also In Effect For
This same Flood Warning also covers:
Other Active Alerts in Iowa
Flash Flood Warning
Flash Flood Warning
Flood Warning
Flood Warning
Flash Flood Warning
Flash Flood Warning
Get Flood Warning Alerts for Johnson County
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Frequently Asked Questions
What does a Flood Warning mean for Johnson County, Iowa?
Flooding is occurring or imminent along rivers, streams, or low-lying areas.
Is this Flood Warning currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 15, 2026 at 11:00 PM ET.
How do I get notified about Flood Warning alerts for Johnson County?
Download StormCast free on Google Play and set Johnson County, Iowa as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flood Warning is also in effect for Washington County.