• Missouri River - longest river of the U.S., flowing c.2,565 mi (4,130 km) from its source in the Rocky Mts. to join the MISSISSIPPI R. 17 mi (27 km) N of St. Louis, Mo., forming the world's third longest (c.3,740 mi/6,020 km) river system.
• Its principal headwaters are the Jefferson, Madison, and Gallatin rivers, which unite to form the main stream at Three Forks, Mont.
• The river is navigable for 760 mi (1,223 km) to Sioux City, Iowa, by barges and towboats. Above Sioux City, its fluctuating flow is regulated by seven major dams-Gavins Point, Fort Randall, Big Bend, Oahe, Garrison, Fort Peck, and Canyon Ferry-that are part of the coordinated Missouri River Basin Project authorized by the U.S. Congress in 1944.
• During the rainy summer of 1993 the lower Missouri reached record levels, flooding many areas. http://www.encyclopedia.com/articles/08571.html

"Watershed - the land area that water moves across or under while flowing to a stream, spring, pond, lake or river".

Missouri Department
of Natural Resources

Missouri Watershed Information Network (MoWIN)
Send comments to: mowin1@missouri.edu
205 Agricultural Engineering
Columbia, MO 65211
Phone: (573) 882-0085
Toll Free: (MO only): 1-877-H20-shed (426-7433)
Fax: (573) 884-5650

Page last updated August 26, 2008