Ariège (river)

Ariège
The Ariège near Ax-les-Thermes
Location
Countries
Physical characteristics
Source 
 • locationPyrenees
 • elevation± 2,400 m (7,900 ft)
Mouth 
 • location
Garonne
 • coordinates
43°31′2″N 1°24′36″E / 43.51722°N 1.41000°E / 43.51722; 1.41000
Length163 km (101 mi)
Basin size3,860 km2 (1,490 sq mi)
Discharge 
 • average65 m3/s (2,300 cu ft/s)
Basin features
ProgressionGaronneGironde estuaryAtlantic Ocean

The Ariège (French pronunciation: [aʁjɛʒ] ; Occitan: Arièja; Catalan: Arieja) is a river in southern France and Andorra. It is a right tributary of the Garonne. From its source in the Pyrenees near El Pas de la Casa, the river flows north, forming part of the French border with Andorra. It flows for about 163 km (101 mi) and drains approximately 4,200 km2 (1,600 sq mi) of mainly mountainous terrain. The river is managed by the authority of the Agence de l’eau Adour-Garonne, to preserve the water quality, ensure ecological continuity, and regulate hydropower use.