The Côa River is a tributary of the Douro River, in central and northeastern Portugal. It is one of the few Portuguese rivers that flows south to north. It flows through the municipalities of Sabugal, Almeida, Pinhel, Figueira de Castelo Rodrigo and Vila Nova de Foz Côa, all located in the Guarda District. Over 100,000 ha of land in the Greater Côa Valley have bee…The Côa River is a tributary of the Douro River, in central and northeastern Portugal. It is one of the few Portuguese rivers that flows south to north. It flows through the municipalities of Sabugal, Almeida, Pinhel, Figueira de Castelo Rodrigo and Vila Nova de Foz Côa, all located in the Guarda District. Over 100,000 ha of land in the Greater Côa Valley have been set aside for rewilding and conservation as Natura 2000 areas.