The Adour is a river in the Aquitaine Basin in the South-West of France, classified as a Natura 2000 site (SIC/pSIC). With a length of 307.1 km, it takes its source in the Pyrenees massif of the Pic du Midi de Bigorre, at the Col du Tourmalet (Hautes-Pyrénées, Occitania) and flows into the Atlantic Ocean near Bayonne (Nouvelle-Aquitaine) between Tarnos (Landes) on its right bank and Anglet (Pyrénées-Atlantiques) on its left bank.
From the Pyrenees to the ocean, the Adour drains a watershed of 16,912 km2 covering a multiplicity of environments, landscapes, economic and cultural activities.
Departments and towns along the river include:
Hautes-Pyrénées: Bagnères-de-Bigorre, Tarbes, Maubourguet
Gers: Riscle
Landes: Aire-sur-l’Adour, Dax, Tarnos
Pyrénées-Atlantiques: Bayonne
The main tributaries of the Adour are, from source to mouth:
Adour de Gripp (also Adour du Tourmalet, 15 km)
Adour de Lesponne (19 km)
Échez (64 km)
Arros (130 km)
Léez (56 km)
Gabas (117 km)
Midouze (151 km)
Louts (86 km)
Luy (154 km)
Gave de Pau (191 km)
Bidouze (82 km)
Aran (48 km)
Ardanabia (26 km)
Nive (79 km)
See also France travel guide
See also Spain travel guide
See also Pyrenees travel guide
See also Andorra travel guide
