On Aug. 1, 1993, the Mississippi River crested at 49.58 feet in St. Louis, nearly 20 feet above flood stage, breaking previous records. At the flood’s peak, more than a million cubic feet of water passed the Gateway Arch each second.
In west St. Louis County, the entire Chesterfield valley, then known as Gumbo Flats, was under water as the Missouri River overflowed its levees. On the east side of the Mississippi, the entire town of Valmeyer, Illinois, was destroyed, and rather than rebuilding, the citizens moved to a new location.
As a result of the Great Flood of ’93, residents were evacuated, homes and businesses were lost, and people all over the region joined in the sandbagging efforts to prevent further devastation.