Flood Warning Issued for Meramec River in Jefferson and St. Louis Counties
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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The National Weather Service has issued a Flood Warning for the Meramec River near Eureka and Valley Park, with minor flooding expected to impact local roads through Tuesday morning.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Eastern Missouri
- Issued
- April 6, 2026
- Issuing authority
- NWS St Louis
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Eastern Missouri.
Alert Details
The National Weather Service in St. Louis has issued a Flood Warning for the Meramec River near Eureka and Valley Park. The alert was issued on March 6 and remains in effect until 5:00 AM CDT on Tuesday, March 10.
Affected Areas
The warning covers portions of Jefferson and St. Louis counties in Missouri. Specific focus is placed on the Meramec River near Eureka and Valley Park.
What You Should Do
Residents and travelers are urged to "Turn around, don't drown" when encountering flooded roads. Most flood deaths occur in vehicles. The NWS advises avoiding inundated areas and monitoring local stream information at water.noaa.gov.
Expected Conditions
Minor flooding is forecast for the region. As of 6:00 PM CST on Friday, the river stage was measured at 15.0 feet. The river is expected to rise above the flood stage of 19.0 feet late Saturday morning, reaching a crest of 22.5 feet by Sunday morning. At a stage of 22.0 feet, Willman Road near the Highway 109 bridge becomes inundated and impassable.
Timeline
- Onset: Saturday morning, March 7.
- Peak: Crest of 22.5 feet expected Sunday morning, March 8.
- Recession: The river is forecast to fall below flood stage late Sunday evening.
- Expiration: The warning concludes at 5:00 AM CDT on Tuesday, March 10.
Original source: NOAA Official Notice ↗
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