FloodZoneMap.org

Flood — Cass, IL

Apr 29, 2017

Heavy rainfall impacted central and southeast Illinois from April 29th into April 30th...creating flash flooding, which led to widespread areal flooding. Periods of thunderstorms with very high rainfall rates dropped 2.00 to 6.50 inches of rain across much of central and southeast Illinois from April 29th into early on May 1st. This rainfall, occurring on top of already saturated soils, created flash flooding in a number of locations. Numerous roads were closed due to high water...including por

Source: NOAA National Weather Service Storm Events Database (event 696946). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Cass, IL

This event is one of many recorded floods in Cass County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

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More Flood Stories

Flash Flood

Cass, IL · May 14, 2023

A stationary frontal boundary extending from northern Missouri to western Kentucky triggered clusters of strong to severe thunderstorms across parts of central Illinois during the late afternoon and evening of May 14th.

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Flash Flood

Cass, IL · May 14, 2023

A stationary frontal boundary extending from northern Missouri to western Kentucky triggered clusters of strong to severe thunderstorms across parts of central Illinois during the late afternoon and evening of May 14th.

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Flash Flood$2.0M damage

Cass, IL · May 8, 1996

Slow moving thunderstorms dumped between 6 and 10 inches of rain over Cass county. The flash flooding washed out several roads, including the road between Chandlerville and Oakford. Sixty-six homes sustained damage, ranging from water in the basement to structural collapse.

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Flash Flood$100K damage

Cass, IL · Jul 28, 2010

A cold front advancing eastward across the Midwest triggered scattered thunderstorms during the late afternoon and evening of July 28th. A few of the storms became strong to severe, with isolated wind damage being reported in Peoria and Schuyler counties.

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