The definition of a cutoff is a new channel cut by a river across the neck of an oxbow. Before 1929, there were about 20 natural cutoffs that occurred on the river, shortening the river by approximately 116 miles. Over time, most of those miles were made up by new bends further down the river. After 1929, 13 cutoffs were constructed to aid navigation, saving 250 miles. Some miles have been reaccounted for, but the river has been "tamed" for now. For me, the cutoff is like a wedge, hammered into a piece of wood. In trying to keep the wood to its original shape, string binds the wood together. As the wedge moves further down, the pressure at the initial point of entry breaks the bands. New string replaces the old.