1. Delineation of flooding within the upper Mississippi River Basin, flood of August 1-3, 1993, in St. Louis and vicinity, Missouri [microform] Yale Public content 1998. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; Information Services [distributor]. English. Public. Missouri, Saint Louis Region, Illinois, East Saint Louis Region, and Mississippi River.