Flood Warning Issued for Meramec River at Fenton Affecting 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This alert is no longer in effect.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 at Fenton, with minor flooding expected to impact Jefferson and St. Louis counties through Tuesday afternoon.
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 at Fenton. This alert was issued on March 7 at 10:50 AM CST and is currently in effect, with the specific flood event expected to begin Sunday afternoon.
Affected Areas
The warning specifically covers the Meramec River at Fenton, impacting the following geographic regions in Missouri:
- Jefferson County
- St. Louis County
What You Should Do
Residents and travelers in the affected areas are advised to follow the safety slogan: "Turn around, don't drown" when encountering flooded roads. Most flood-related deaths occur in vehicles. Be especially cautious at night when it is significantly harder to recognize the dangers of rising water. Additional stream information is available via the NWS water portal.
Expected Conditions
Minor flooding is forecast for the Meramec River. As of 10:15 AM CST on Saturday, the river stage was measured at 18.1 feet. The river is expected to rise above the flood stage of 23.0 feet early Sunday afternoon, reaching a projected crest of 23.4 feet by Sunday evening.
Specific impacts include the following: at 22.9 feet, the entire boat ramp path at Minnie Ha Ha Park will be submerged. Forecasts are based on observed and predicted precipitation for the next 48 hours.
Timeline
The Flood Warning is effective from Sunday afternoon, March 8, through Tuesday afternoon, March 10 at 4:00 PM CDT. The river is expected to fall back below flood stage late Monday morning.
Original source: NOAA Official Notice ↗
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