The total land area of 21,158 km is divided by its slopes: the north slope, bordered by the plains of Guajira and the Caribbean Sea; the eastern slope delimited by the large alluvial plain of Magdalena river and the Ciénaga Grande de Santa Marta; the southwestern slope demarcated by the Racheria and Cesar rivers.
Su área de 21.158 km está dividida en vertientes: en la vertiente norte, bordeada por las planicies de la Guajira y el Mar Caribe; la de occidente limita con la gran planicie aluvial del río Magdalena y la Ciénaga Grande de Santa Marta; la vertiente suroriental la enmarcan los ríos Ranchería y Cesar.