Page "Great Mississippi and Missouri Rivers Flood of 1993" Paragraph 4

Storms, persistent and repetitive in nature during the late spring and summer, bombarded the Upper Midwest with voluminous rainfall.

Portions of east-central Iowa received as much as of rain between April 1 and August 31, 1993, and many areas across the central-northern plains had precipitation 400 – 750 % above normal.

In the St. Louis National Weather Service ( NWS ) forecast area encompassing eastern Missouri and southwest Illinois, 36 forecast points rose above flood stage, and 20 river-stage records were broken.

The 1993 flood broke record river levels set during the 1973 Mississippi and the 1951 Missouri River floods.