What a great idea to compare and contrast ‘wild’ and ‘non-wild’ stretches of the Mighty Mississippi! We must describe the juxtaposition. Rivers yearn to be free and flow with nature… they are rivers and not channels. I hope the U.S. Army Corps of Engineers is inspired by your website to remember to tread lightly and preserve the natural order and grandeur of waterways. Let them join an expedition and feel the pulse and hear the voice of the water… let their hearts sing like the rivers!