Portions of Chesterfield are located in the floodplain of the Missouri River , now known as Chesterfield Valley , formerly as Gumbo Flats . This area was submerged during the Great Flood of 1993 ; higher levees built since then have led to extensive commercial development in the valley . Chesterfield Valley is the location of Spirit of St. Louis Airport , used for corporate aviation , as well as the longest outdoor strip mall in America
Great Flood of 1993
Great Flood of 1993
Chesterfield, Missouri