Conasauga River (kahn-uh-SAW-guh), c.90 mi/145 km long, in Ga. and Tenn.; rises in the Blue Ridge, Fannin co., N Ga., flows NW across Tenn. state line, then SSW into Ga., past Tilton to confluence with Coosawattee R. 3 mi/4.8 km NE of Calhoun, forming Oostanaula R.; 34°51'N 84°35'W.