The chief rivers are the Sele—joined by the Negro and Calore—on the west, and the Bradano, Basento, Agri, Sinni on the east, which flow into the gulf of Taranto; to the south of the last-named river there are only unimportant streams flowing into the sea east and west, inasmuch as here the width of the peninsula diminishes to some .
Najvišja točka je v Monte Pollino (2233 m).