West Fork of the Little Sioux River

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West Fork of the Little Sioux River is a river in the United States. Approximately 95 miles (153 km) long,[1] it courses through northwest Iowa, rising north of Marcus in Cherokee County and flowing generally southwest through farmland in Plymouth and Woodbury counties until the meandered (old) streambed finally meets the Little Sioux River near Turin in Monona County. However, the lower portion of the river, where the stream leaves the Loess Hills and enters the Missouri River floodplain near Holly Springs, Iowa, has been extensively channelized. Across this floodplain, most of the flow is actually carried by the Garretson and West Fork drainage ditches, which join to become the Monona-Harrison Ditch, which in turn enters the Missouri just upstream from the mouth of the Little Sioux in Harrison County. Thus, today the waters of the West Fork of the Little Sioux are no longer functionally tributary to the Little Sioux River proper.

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References[edit]

  1. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed March 30, 2011

42°18′40″N 96°05′48″W / 42.31111°N 96.09667°W / 42.31111; -96.09667