Ouachita River

Ouachita River
Ouachita River in Ouachita County, Arkansas
The Ouachita River. Its southern terminus is the confluence with the Tensas River near Jonesville, Louisiana to form the Black River (Louisiana).
Location
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
Physical characteristics

Source
• location	Ouachita Mountains, Polk County, Arkansas
• coordinates	34°41′56″N 94°19′57″W / 34.69889°N 94.33250°W / 34.69889; -94.33250

Mouth	Black River
• location	Catahoula Parish, near Jonesville, Louisiana
• coordinates	31°37′53″N 91°48′25″W / 31.63139°N 91.80694°W / 31.63139; -91.80694
Length	605 mi (974 km)

Discharge
• location	West Monroe, Louisiana (includes Boeuf River)
• average	24,262 cu/ft. per sec.

Basin features
Cities	Hot Springs, Arkansas Camden, Arkansas Monroe, Louisiana West Monroe, Louisiana
Tributaries
• left	Little Missouri Saline Tensas
• right	Caddo Little

The Ouachita River (/ˈwɑːʃɪtɑː/ WAH-shi-tah) is a 605-mile-long (974 km) 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 (by main stem).