Caia (river)

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Caia (Rio Caia)
The Guadiana river basin in the Iberian Peninsula
Origin Serra de São Mamede, Portugal
Mouth Guadiana River, near Badajoz, Spain
Basin countries Spain,Portugal
Basin area 846 square kilometres (327 sq mi)

The Caia is a river in the Iberian Peninsula, a tributary to the Guadiana. It is one of the main water courses in the Portalegre District, Portugal.


It has its sources in the Serra de São Mamede and for the lower 11 kilometres (7 mi) of its course it forms the international border between Portugal and Spain. Finally it joins the Guadiana River southwest of the city of Badajoz.



  • Caia Dam, with the largest reservoir of Portalegre District[1]


External links[edit]