The Blue River is a stream that flows through Johnson County, Kansas and Jackson County, Missouri in the Kansas City Metropolitan Area. The river rises in Johnson County near the border of the states of Kansas and Missouri. Crossing the city of Kansas City, Missouri, it empties into the Missouri River near the border between Kansas City and Independence, Missouri. Johnson County (standard abbreviation: JO) is a county located in the state of Kansas. ... Jackson County is a county located in the state of Missouri. ... The Kansas City Metropolitan Area is the metropolitan area located on the border of Missouri and Kansas. ... State nickname: The Sunflower State Other U.S. States Capital Topeka Largest city Wichita Governor Kathleen Sebelius Official languages None Area 82,277 mi²; 213,096 km² (15th) - Land 81,815 mi²; 211,900 km² - Water 462 mi²; 1,196 km² (0. ... Missouri, named after the Missouri Siouan Indian tribe meaning canoe, is a Midwestern state in the United States with Jefferson City as its capital. ... City nickname: City of Fountains, Heart of the Nation Location in the state of Missouri Country State County United States Missouri Clay/Jackson/Platte Mayor Kay Barnes Area âLand âWater 318 sq. ... The Missouri River and its tributaries N.P. Dodge Park, Omaha, Nebraska High silt content makes the Missouri (left) noticably lighter than the Mississipi here at their confluence above St. ... Independence is a city located in Missouri, in the Kansas City metropolitan area. ...