Alto Cauca, formed by the Cauca River and its tributaries: Palo, Guengué, Negro, Teta, Desbaratado, and Quilichao, Mondomo, Ovejas, Pescador, Robles, Piedras, Sucio, Palacé, Cofre, Honda, Cajibío, Piendamó, Tunia, Molino, Timbío and Blanco.