The river Sado (Portuguese pronunciation: [ˈsaðu]) is a river in southern Portugal; it is one of the major rivers in the country. It flows in a northerly direction (the only major Portuguese river to do so) through 175 kilometres (109 mi) from its springs in the hills of Ourique before entering the Atlantic Ocean in an estuary in the city of Setúbal.^[1]

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Sado River
The Sado River as seen from the castle of Alcácer do Sal
Location
Country	Portugal
Physical characteristics
Source
• location	Serra da Vigia, Ourique
• elevation	230 m (750 ft)
Mouth
• location	Atlantic Ocean at Setúbal
• elevation	0 m (0 ft)
Length	175 km (109 mi)
Basin size	7,692 km2 (2,970 sq mi)
Basin features
Tributaries
• right	Xarrama River

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The estuary is the habitat of a large community of bottlenose dolphins; there are 31 members of the pod, each of whom has been named (2007).

The river is dammed in several places, chiefly for irrigation of rice, maize, and vegetables.

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

Wikimedia Commons has media related to Rio Sado.

38.4894°N 8.92333°W / 38.4894; -8.92333