Arda River (Douro tributary)

Rio Mau is a Portuguese parish located in the municipality of Penafiel. The population in 2011 was 1,407, in an area of 6.13 km². It was created in 1984 by Law nº 42/84, of December 31, with places disannexed from the parish of Sebolido.

Melres is a town and a former civil parish in the municipality of Gondomar, Portugal. In 2013, the parish merged into the new parish Melres e Medas.

Melres e Medas is a civil parish in the municipality of Gondomar, Portugal. It was formed in 2013 by the merger of the former parishes Melres and Medas. The population in 2011 was 5,820, in an area of 27.81 km².

Lagares is former civil parish in the municipality of Penafiel, Portugal. In 2013, the parish merged into the new parish Lagares e Figueira.Lagares is a village with an area of 10.92 km². It is located in the west of the country in the east part of the distrito (district) of Porto. Lagares is located nearly 30 km from the Atlantic. The population of the village is 2463 inhabitants. One of its major tourist attractions is Aldeia de Quintadona.

Lagares e Figueira is a civil parish in the municipality of Penafiel, Portugal. It was formed in 2013 by the merger of the former parishes Lagares and Figueira. The population in 2011 was 2,866, in an area of 16.64 km².

Vale (Portuguese meaning "valley") is a former civil parish in the municipality of Santa Maria da Feira, Portugal. In 2013, the parish merged into the new parish Canedo, Vale e Vila Maior. It has a population of 2,138 inhabitants and a total area of 9.01 km².

Canedo, Vale e Vila Maior is a civil parish in the municipality of Santa Maria da Feira, Portugal. It was formed in 2013 by the merger of the former parishes Canedo, Vale and Vila Maior. The population in 2011 was 9,455, in an area of 43.70 km².

Canedo (Portuguese pronunciation: [kɐˈnedu]) is a former civil parish in the municipality of Santa Maria da Feira, Portugal. In 2013, the parish merged into the new parish Canedo, Vale e Vila Maior. It has a population of 5,782 inhabitants and a total area of 27.81 km².

Covelo is a former civil parish in the municipality of Gondomar, Portugal. In 2013, the parish merged into the new parish Foz do Sousa e Covelo. It has a population of 1,755 inhabitants and a total area of 8.36 km2.

Aguiar de Sousa is a Portuguese parish of the municipality of Paredes. The population in 2011 was 1,631, in an area of 22.38 km².Aguiar de Sousa was formerly an extensive municipality that existed until the beginning of the 19th century. It was composed of 39 parishes, which are now part of the municipalities of Gondomar, Valongo, Lousada, Paredes and Paços de Ferreira. In 1801, it covered an area of about 260 km² with 21,643 inhabitants.

Gião is a former civil parish in the municipality of Santa Maria da Feira, Portugal. In 2013, the parish merged into the new parish Lobão, Gião, Louredo e Guisande. It has a population of 1,676 inhabitants and a total area of 3.57 km². Its density was 470/km².

Lever is a former civil parish in the municipality of Vila Nova de Gaia, Portugal. In 2013, the parish merged into the new parish Sandim, Olival, Lever e Crestuma. The population in 2011 was 2,794, in an area of 7.84 km².