Topic summary
Douro River

Extracted from the Wikipedia article Douro.
Geography
It is the third-longest river in the Iberian Peninsula after the Tagus and Ebro. Its total length is 897 km (557 mi), of which only stretches of the Portuguese section, being below a fall/rapids line, are naturally navigable, by modest rivercraft. The Douro River basin encompasses an area of approximately 97,290 km (37,560 sq mi).