It is the second largest lagoon in the Delta de l’Ebre. The Tancada lagoon with an area of 250 Ha, is a landscape rich in species of birds and fish.
The lagoons are extensions of brackish water located on the coastline, always close to the sea. Their formation process is influenced by the coastal and fluvial dynamism of the Delta. The lagoons that are parallel to the coastline normally originate from a bay, in which the exchange of water with the sea is progressively restricted by the growth of one or more sandy bars.
The Laguna de la Tancada is located on the right-hand side of Amposta and has an area of 312 Ha and a depth of less than 70 cm: it is bordered to the south by the bay of Els Alfacs and to the east by the Mediterranean Sea.
In spring and summer it receives an inflow of fresh water from the surrounding rice fields.
It has a rich landscape of plant environments distributed according to the salinity conditions of the substratum; highlighting natural areas of reed beds and scrubland.
This diversity of environments makes the lagoon and the surrounding areas a natural space with an exceptional wealth of flora and fauna.
In 1992 the Tancada lagoon was declared a wildlife reserve, a protected status that prohibits hunting. Fishing can only be carried out by the San Pedro fishermen’s guild, in compliance with the regulations.
The lagoon has typical freshwater vegetation with species such as reeds and different macrophytes.
In the areas close to the coast, vegetation more typical of saline environments predominates.
The fauna of the lagoon is rich and diverse, with large flocks of coots and different species of ducks that spend the winter, while in summer there are Audouin’s gulls, terns and terns. From the viewpoint you can observe one of the most representative birds of the Delta de l’Ebre, the flamingo. As for fish, there are numerous species of marine waters: gilthead bream, sole, sea bass, mullet and eels. Among the aquatic invertebrates, shrimps and terrestrial insects stand out.