BIODIVERSITY of OUACHITA UPLAND RIVERS
Little Missouri River
The Little Missouri River is a major tributary of the Ouachita River. The headwater area is known for its scenic pine-forested ridges and valleys. The river cascades through a series of white-water gorges, including Little Missouri Falls, before leveling off as it flows across the Arkansas Piedmont. The river has a drainage area of 5447 km2.