Little Missouri River

The Little Missouri River, or Little Mo, is a 29 mile long river in the Ouachita Mountains of southwest Arkansas.

This river is a rocky, mountain river that flows through narrow, forested canyons. It has numerous small waterfalls, crystal clear water, and outstanding scenery including towering rocky bluffs crowned with pine.

The Little Missouri flows in a generally north-to-south direction through Pike, Clark and Montgomery counties on the western side of the Ouachita River. It is just south of, and runs parallel to, the Caddo River above Camden, Arkansas.

The river is dammed and forms Lake Greeson. The upper stretches of the river above Lake Greeson descend 1,035 feet in 29 miles for an average drop of 35 feet per mile. This makes the upper waters of the river excellent for experienced canoers. There is a 4.4-mile long segment that has been designated as a wild river. This segment contains the Winding Stair Rapid which is classified as a class IV rapid.

The Little Missouri is a superior fishing stream for rainbow trout, green sunfish, longear, smallmouth and spotted bass and other species. The area below the dam at Lake Greeson is most popular for trout fishermen.

Portions of the Little Missouri flow through the Ouachita National Forest and the lower segment flows past the Crater of Diamonds State Park. The Albert Pike Campground provides camping facilities for visitors to the area.

The Little Missouri is listed as a Wild and Scenic River by the United States Forest Service. The upper reaches of the river are designated as an Arkansas Natural and Scenic River by the state.

During the American Civil War a small battle was fought on the Little Missouri 10 miles north of Prescott, Arkansas at the Clark-Nevada County line. The battle is called the Battle of the Little Missouri River by the north and Battle of Elkins' Ferry by the south.