United States, Arkansas, Benton, Northwest Benton County. Ozark Plateau: Foothills of the Boston Mountains: Along Spavinaw River, 1 to 10 mi. east of the Oklahoma border. Near Gravette.
36.382486 -94.491206 +-8168m. WGS84
Drew polygon for the length of Spavinaw Creek ("Spavinaw River") 1-10 mi. E of the Oklahoma border. Coordinates centered on Spavinaw Creek in this polygon, and the uncertainty radius fits the polygon.