Arros (river)

The Arros (Arròs) is a right tributary of the Adour, in the Southwest of France. It is 130.2 km long.

Name
The name Arros is based on the root Arr- 'stone' and the suffix -os.

Geography
The Arros rises in the Baronnies of Pyrenees, southeast of Bagnères-de-Bigorre, below the Signal de Bassia (1 921 m).

It flows north through a narrow valley defended by the castle of Mauvezin and the bastide of Tournay. It joins the Adour before it turn west, upstream from Riscle.

Départements and towns

 * Hautes-Pyrénées: Bourg-de-Bigorre, Tournay, Chelle-Debat
 * Gers: Montégut-Arros, Villecomtal-sur-Arros, Plaisance.

Main tributaries

 * (L) Esqueda, from Banios
 * (L) Luz, from Lies
 * (L) Arredou, in Tournay
 * (L) Arret Daban or Arret Devant,
 * (L) Arret Darré, in Gonez
 * (R) Bouès, from Capvern