"...One who knows the Mississippi will promptly aver not aloud, but to himselfthat ten thousand River Commissions, with the mines of the world at their back, cannot tame that lawless stream, cannot curb it or confine it, cannot say to it, Go here, or Go there, and make it obey." ~ Mark Twain
This was not your typical flood. The rain amounts overloaded the ability of the drainage capability and resulted in lots of areas flooding that had NEVER before flooded. In addition, the rains affected such a large area that the accumulated waters had nowhere to drain. This could have occurred anywhere in the country and would have ended with the same tragic results.
I recall the floods in Iowa+ years+ ago when the Imperial
Federal Government told the people to get insurance BEFORE the floods hit.
Gotta keep that enthonal flowing.