Douro Basin

Description

The Douro River is the third longest in the Iberian Peninsula and its basin is the largest there. It rises in the Sierra de Urbión in central Spain, and crosses the Numantian Plateau. The river flows generally westward across Spain and northern Portugal to the Atlantic Ocean at Foz do Douro. It has extensive barge traffic in its Portuguese section, and has been harnessed for hydroelectric power.