Little Missouri River (Arkansas)

Little Missouri River
Little Missouri River in Ouachita National Forest
Physical characteristics
Length147 mi (237 km)
Discharge 
 • locationbelow the mouth of the Antoine
 • average430 cubic feet per second (12 m3/s)
Discharge 
 • locationLangley, Arkansas
 • average152 cubic feet per second (4.3 m3/s)
TypeWild, Scenic
DesignatedApril 22, 1992

The Little Missouri River, or Little Mo, is a 147-mile-long (237 km) waterway that runs from the Ouachita Mountains of southwest Arkansas into the rolling hills area in the surrounding countryside.