What We've Done To The Mississippi

"What is the Mississippi River? It's not actually a silly question. The Mississippi no longer fits the definition a river as "a natural watercourse flowing towards an ocean, a lake, a sea, or another river." Rather, the waterway has been shaped in many ways, big and small, to suit human needs. While it maybe not be tamed, it's far from wild -- and understanding the floods that are expected to crest in Louisiana soon means understanding dams, levees, and control structures as much as rain, climate, and geography."