This document identifies key observations made from flood response effort in the Midwest. "A flood has been described as a 'disaster in slow-motion'. This was certainly the case in the Midwestern United States starting in February 1993. Campaigns were fought over 2000 miles of rivers in Kansas, Nebraska, South Dakota, North Dakota, Iowa, Missouri, Minnesota, and Illinois."
U.S. Army Combined Arms Center, Disaster Relief: http://call.army.mil/katrina/disaster_relief/index.asp