Ribeira de Seda
Ribeira de Seda originates in Serra de São Mamede and crosses the municipalities of Portalegre and Crato, entering Alter do Chão and then flowing into the Maranhão dam, in Avis.
Ribeira de Seda originates in Serra de São Mamede and crosses the municipalities of Portalegre and Crato, entering Alter do Chão and then flowing into the Maranhão dam, in Avis.