Adour

The Adour river has a length of 309 kilometres (192 miles).^{[1][N 1]} Its drainage basin has an area of approximately 16,912 square kilometres (6,530 square miles).

Course

The Adour river starts, as Adour de Payolle, at the north side of the Arbizon mountain. This river combines with the Adour de Gripp and the Adour de Lesponne to form the Adour river at Campan.

The Adour flows north for almost 160 kilometres (100 miles) through the Hautes-Pyrénées to Gers. There, it turns to the west and gets into the Landes department. In Port-de-Lanne, the Adour is joined by the Gaves réunis river. Finally, it flows into the Bay of Biscay, in the Atlantic Ocean, between Anglet (Pyrénées-Atlantiques) and Tarnos (Landes).

Boats can travel on the river beginning about 72 kilometres (45 miles) from its mouth.

Some of the important tributaries (longer than 50 kilometres [31 miles]) of the Adour are:

Départements and towns found along the Adour river are:

• Hautes-Pyrénées: Campan, Bagnères-de-Bigorre, Tarbes, Maubourguet
• Gers: Riscle
• Landes: Aire-sur-l'Adour, Dax, Tarnos
• Pyrénées-Atlantiques: Bayonne

The average yearly discharge for the Adour river is 86.60 cubic metres per second (3,058 cubic feet per second) at Saint-Vincent-de-Paul in the Landes department.^[12]

Average monthly discharge (m³/s) at Saint-Vincent-de-Paul (1918 - 2017)^[12]

The Adour shows typical seasonal changes. The highest levels of the river are in winter and spring, from December to May inclusive, with the highest level in February. They are followed by a rapid fall in the flow during the low water period that goes from July to October.

• 
  The Adour at Riscle
• 
  The Adour at Aire-sur-l'Adour
• 
  The Adour view from Saint-Maurice-sur-Adour
• 
  The Adour at Saint-Sever
• 
  The Adour at Dax
• 
  The Adour between Urt and Saint-Laurent-de-Gosse
• 
  Bayonne, mouth of the Adour
• 
  Bayonne, mouth of the Adour
• 
  Bayonne, the commerce port
• 
  Adour seen from the bridge at Aire-sur-l'Adour

• List of rivers of France

Wikimedia Commons has media related to Adour.

• L'Adour : histoire, géographie et détournement Archived 2016-01-02 at the Wayback Machine (in French)
• L'adour et ses affluents, villes et villages, faune et flore, navigation et pêche Archived 2013-06-22 at the Wayback Machine (in French)