Birth: Begins in the Cañada de las Fuentes (Sierra de Cazorla).
River mouth: It ends in the Atlantic Ocean Sanlúcar de Barrameda, in a wide estuary between the province of Cadiz and Huelva.
Villages where it passes: Its hydrographic basin includes territories of Jaen, Cordoba, Almeria, Granada, Malaga, Sevilla, Huelva and Cadiz, as well as of Murcia, Albacete, Ciudad Real and Badajoz.
Curiosities: Nowadays it is still debated where it begins. Some people say it begins in an indeterminate point of Sierra de María, situated between Topares (pedanía de Velez Blanco) and la Cañada de Cañepla (María, Almeria).