Complete flash flood and flood information for Illinois - from real-time warnings to historical data and comprehensive statistics dating back to 1996.
Analyzing thousands of historical flood records to generate comprehensive statistics and charts...
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Complete flash flood and flood information for Illinois - from real-time warnings to historical data and comprehensive statistics dating back to 1996.
Active flood warnings in Illinois using official National Weather Service data
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NWS API
Live flood warnings currently in effect for Illinois
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Explore flood data for specific counties in Illinois. Click on any county to view detailed flood statistics, active alerts, and historical flood events at the county level.
Comprehensive database of flood events in Illinois recorded since 1996 through the end of 2024(6197 total records)
Total Floods
6197
Total Deaths
63
Total Injuries
41
Property Damage
$2.2B
Flash Floods
3111
Flood Events
3086
Detailed charts and visualizations revealing flood patterns by type, seasonality, and impact. These analytics show historical trends and unique characteristics of flood activity in this region.
Shows flood frequency across different months of the year, highlighting seasonal patterns. This information helps identify peak flood seasons and periods of heightened risk.
Summary: In Illinois, May is the most active month with 1340 flood events (22% of all recorded events). The primary flood season occurs during May, June, July, accounting for 55% of all floods in this region.
Identifies the counties most frequently affected by floods in this region. This geographical breakdown helps pinpoint flood hotspots and vulnerable areas.
Summary: COOK has experienced the highest number of floods (350) in Illinois, accounting for 5.6% of all flood events in this state. The top three most flood-prone counties (COOK, ALEXANDER, and WHITE) account for 13% of all flood activity.
Tracks flood occurrences and impacts over time, revealing long-term patterns and significant events. Toggle the metrics below to customize your view.
Visualizes the financial impact of floods across years using a square root scale. This approach ensures both major damage events and smaller impacts are visible on the same chart.
Shows the breakdown between Flash Floods and regular Flood events. Flash floods are typically more dangerous due to their rapid onset.
Summary: In Illinois, Flash Floods are more common, representing 50% of all flood events. Flash floods typically pose greater immediate danger due to their rapid development and higher water velocities.
Comprehensive chronological list of all flood events with detailed information on each occurrence. View specifics about type, damage, casualties, and timing for individual flood events.