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Black River (Louisiana)

Ouachita River
River
Ouachita River, Arkansas.jpg
Ouachita River in Ouachita County, AR
Country United States
States Arkansas, Louisiana
Tributaries
 - left Little Missouri, Saline, Tensas
 - right Caddo, Little
Cities Hot Springs, AR, Camden, AR, Monroe, LA, West Monroe, LA
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; -91.80694Coordinates: 31°37′53″N 91°48′25″W / 31.63139°N 91.80694°W / 31.63139; -91.80694
Length 605 mi (974 km)
Ouachita watershed.png
Map of the Ouachita River watershed. The Ouachita joins the Tensas River near Jonesville, Louisiana to form the Black River (Louisiana).

The Ouachita River (/ˈwɑːʃtɑː/ 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).

The Ouachita River begins in the Ouachita Mountains near Mena, Arkansas. It flows east into Lake Ouachita, a reservoir created by Blakely Mountain Dam. The North Fork and South Fork of the Ouachita flow into Lake Ouachita to join the main stream. Portions of the river in this region flow through the Ouachita National Forest. From the lake, the Ouachita flows south into Lake Hamilton, a reservoir created by Carpenter Dam, named after Flavius Josephus Carpenter. The city of Hot Springs lies on the north side of Lake Hamilton. Another reservoir, Lake Catherine, impounds the Ouachita just below Lake Hamilton. Below Lake Catherine, the river flows free through most of the rest of Arkansas.


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