Washita
or OUACHITA, a river of the United States and an affluent of Red river; flows in a S. E. direction through Arkansas and Louisiana, draining a rich cotton and corn country for a distance of 600 miles. It receives the Saline, La Fourche, Tensas, and Little Missouri rivers, and is navigable throughout the year by steamboats to Camden, a distance of 300 miles. The False Washita traverses the Indian Territory, and joins the Red river above Preston, in Texas.