The Têt (; ) is the largest river in Pyrénées-Orientales, southwestern France. It is long. The Têt has its source at the foot of the Puig de la Cometa de l'Espagne in the Carlit massif in the eastern Pyrenees. It crosses the Pyrénées-Orientales département (Northern Catalonia) from West to East and ends in the Mediterranean Sea, near Perpignan ().Topographic map on Géoportail.
A staircase of along the length of the valley has been studied in detail.
Tributaries include
Riberole Carança Mantet Rotja Cady Castellane Lentillà Boulès Basse
Towns along the river
Mont-Louis (Montlluís) Olette (Oleta) Villefranche-de-Conflent (Vilafranca de Conflent) Prades (Prada de Conflent) Perpignan (Perpinyà) Ille-sur-Têt (Illa)
References