It originates in Spain, in the Tentudia mountain range, and has a length of 60 km until it flows into the Guadiana.

Reservoir created by the Pedrógão Dam, the second largest dam in the Alqueva project.

Largest artificial lake in Europe, originating from the Alqueva dam, located on the Guadiana river. The reservoir reaches, at its maximum level, 250 km², investing in infrastructure to support tourists. Here you can practice several sporting and leisure activities.

The Alqueva Dam took several years to become a reality. It is the larges Portuguese dam and aims to produce electricty and water the arid Alentejo lands.

Located to the south of the town of Moura, between the Guadiana river and the border of Vila Verde de Ficalho, on the Baixo Alentejo region. It is also known as "Ficalho Hill" and belongs to the Old Massif. It is 18 km long. It stands out for its reddish bumps, covered by olive trees.

A tributary that comes from Spain and meets the Guadiana river, a little before the Alqueva dam.