Arros (river)

LocationCountryFrancePhysical characteristicsSource  • locationBaronnies of Pyrenees Mouth Adour43°39′44″N 0°1′41″W / 43.66222°N 0.02806°W / 43.66222; -0.02806Length130 km (81 mi)Basin size947 km² (366 sq mi)Discharge  • average9 m³/s (320 cu ft/s) Basin featuresProgressionAdour→ Atlantic Ocean

The Arros (French pronunciation: [aʁɔs]; Occitan: Arròs) is a right tributary of the Adour, in the Southwest of France. It is 130.2 km (80.9 mi) long.^[1]

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

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.

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

• (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