Nicknamed the Big Muddy, the Missouri River has long been one of America's most important natural resources.
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Known today as Ol' Man River, The Big Muddy, Old Blue, The Gathering of Waters and other nicknames, the name “Mississippi” comes from either the Ojibwe or Algonquin word “misi-ziibi,” meaning Great River. The Mississippi River, beginning in Lake Itasca MN, runs 2,341 miles to the Gulf of Mexico.