James Scott caused the worst American flooding disaster since when?
James Scott (criminal): James Robert "Jimmy" Scott (born November 20, 1969) was convicted of causing a massive flood of the Mississippi River at West Quincy, Missouri as part of the Great Flood of 1993. Great Flood of 1993:  Within this zone, the flooded area totaled around 30000 mi2 and was the worst such U.S. disaster since the Great Mississippi Flood of 1927, as measured by duration, area inundated, persons displaced, crop and property damage, and number of record river levels.
1927