Flood Warning Issued for Meramec River in St. Louis and Jefferson Counties Through Tuesday
This alert is no longer in effect.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 at Valley Park, with minor flooding expected to impact local parks 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. This alert, classified as a severe weather event by the NWS, is in response to forecast minor flooding along the river basin.
Affected Areas
The warning covers the following geographic regions in Missouri:
- Counties: Jefferson and St. Louis.
- Specific Locations: Meramec River near Eureka and the Meramec River at Valley Park.
What You Should Do
Residents in the affected areas should follow these safety instructions:
- Turn around, don't drown: Do not attempt to drive through flooded roads. Most flood-related fatalities occur in vehicles.
- Avoid Recreational Areas: Stay away from riverbanks and parks located in the flood zone.
- Monitor Conditions: Stay tuned to local weather updates and stream information provided by the NWS.
Expected Conditions
Minor flooding is forecast based on observed and predicted precipitation over the next 48 hours.
- Current Stage: The river was at 10.6 feet as of 6:00 PM CST Friday.
- Flood Stage: 18.0 feet.
- Forecast Crest: The river is expected to rise to a crest of 19.7 feet.
- Impacts: At 19.5 feet, flooding will impact Buder Park and the recreation park at the water plant.
Timeline
- Alert Effective: Issued Friday evening, March 6.
- Onset: The river is expected to rise above flood stage late Saturday evening, March 7.
- Crest: Peak levels are forecast for early Sunday afternoon.
- Duration: The river is expected to fall below flood stage early Monday morning, with the warning officially expiring at 7:00 AM CDT on Tuesday, March 10.
Original source: NOAA Official Notice ↗
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