Privileged place for migratory birds, filled with reeds and other vegetation typical of swamps. It houses part of the population of the Lagoa de Santo André, most notably the Red-billed duck, facing extinction. Is situated in a place of difficult access, and is separated from the beach by a cordon of dunes.

Located near Quiaios, the lagoon is roundish, with an approximate diametre of 600 metres, and it is surrounded by a lovely tree area. It has little depth and that explain its dense vegetation, typical of swamp areas. In this place, a havem for aquatic birds, there are bird observatories and a Centre of Environmental Education.

A dam that is thirty metres high and 1175 metres long, equipped with a floodgate and a water connection to the Loureiro/Monte Novo channel. It is the first part of the watering subsystem of the Alqueva river.

A dam on the Degebe river, on the Guadiana river basin, surrounded by vineyards, olive trees and harvesting fields. The small-mouth bass, the carp, the perch and the nase are the most abundant fish species.

A dam on the Caima river (Vouga river's basin) used for irrigating. The tree filled banks render the landscape particularly beautiful. Spoirts are allowed, even though under certain conditions.

A dam located on the Arouca river, near the Lousã hill, on the Mondego river basin.