The Little Missouri River, or Little Mo, is a 147mi waterway that runs from the Ouachita Mountains of southwest Arkansas into the rolling hills area in the surrounding countryside.OverviewThe Little Missouri River is a rocky mountain river that flows through narrow forested canyons. This river has numerous small waterfalls, crystal clear water, and outstanding scenery including towering rocky bluffs crowned with pine.The Little Missouri River was so named because its lower reaches were said to remind early French explorers of the Missouri River.LocationMouth: Confluence with the Ouachita River in Ouachita County, Arkansas Source: Mountains of Polk County, ArkansasCourseThe Little Missouri flows in a generally north-to-south direction through Pike, Clark, and Montgomery on the western side of the Ouachita River. The Little Missouri River is south of, and runs parallel to, the Caddo River, before flowing into the Ouachita River above Camden, Arkansas. The largest tributary of the Little Missouri River is the Antoine River. The Little Missouri River is intermittently navigable to small boats below its confluence with the Antoine River, although it is rarely used.
