The Ouachita River is a 605-mile-long river that runs south and east through the U.S. states of Arkansas and Louisiana, joining the Tensas River to form the Black River near Jonesville, Louisiana. It is the 25th-longest river in the United States.
Country: United States
States: Arkansas · Louisiana
Counties: Polk · Montgomery · Garland · Hot Spring · Clark · Dallas · Ouachita · Calhoun · Union · Bradley · Ashley
Parishes: Union · Morehouse · Ouachita · Caldwell · Catahoula
Mouth: Black River
Length: 605 mi (974 km)
Cities: Hot Springs, Arkansas · Camden, Arkansas · Monroe, Louisiana · West Monroe, Louisiana
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