Sado River

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Sado river seen from the castle of Alcácer do Sal.
Sado river seen from the castle of Alcácer do Sal.

The Sado River (pron. IPA['saðu]) is a river in Southern Portugal, and is one of the major rivers in the country. It flows in a South/North direction through 175 km from its springs in the Caldeirão hills before entering the Atlantic Ocean in an estuary in the city of Setúbal.

In Setúbal, its estuary is famous for being the habitat for a rare species of dolphin exclusively found in this region; there are 31 members of the species, of which all have been named (2007).

In its course, it crosses the city of Alcácer do Sal.

It is dammed in several places chiefly for agricultural reasons, such as growing rice, maize (corn) and other vegetables.