Flood Warning Issued for Meramec River in Jefferson and St. Louis Counties

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.