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Flood — St. Clair, MO

Apr 20, 2025

A strong storm system moved through the area on Sunday April 20th, 2025. This system brought tornadoes, damaging wind, large hail and heavy rain. The heavy rainfall led to flooding as the area had already received heavy rainfall from storms earlier in the week. Multiple area rivers reached minor to moderate flood stage due to heavy runoff.

Source: NOAA National Weather Service Storm Events Database (event 1253296). Narrative written by NWS staff at the time of the event.

Flood Risk Context for St. Clair, MO

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

View St. Clair County flood data →

More Flood Stories

Flash Flood2 deaths

St. Clair, MO · Jul 25, 2001

Excessive rainfall of three to five inches fell over northern and eastern portions of St. Clair County between 6 and 9 am. Occupants of a minivan went across a low water crossing that was already flooded.

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Flash Flood$25K damage

St. Clair, MO · Jul 31, 2020

A cold front moved into the region on the 26th and meandered across the region through the 31st before an unseasonably strong upper level low pressure system moved east of the region.

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Flash Flood$25K damage

St. Clair, MO · Jul 31, 2020

A cold front moved into the region on the 26th and meandered across the region through the 31st before an unseasonably strong upper level low pressure system moved east of the region.

Read the full account →
Flash Flood$200K damage

St. Clair, MO · Jun 14, 2001

Over six inches of rain fell in southeastern St. Clair County washing out roads and flooding local landscape. Whole sections of roadways were eroded away by the rain which overflowed river and creek banks throughout the county.

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