river
A river is a natural flowing watercourse, usually freshwater
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the ...
of the
French Basque Country
The French Basque Country, or Northern Basque Country ( eu, Iparralde (), french: Pays basque, es, País Vasco francés) is a region lying on the west of the French department of the Pyrénées-Atlantiques. Since 1 January 2017, it constitu ...
, in
Nouvelle-Aquitaine
Nouvelle-Aquitaine (; oc, Nòva Aquitània or ; eu, Akitania Berria; Poitevin-Saintongeais: ''Novéle-Aguiéne'') is the largest administrative region in France, spanning the west and southwest of the mainland. The region was created by ...
, Southwest
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
. It is long.
It rises on the northern slope of the ''Xoldokogaina'', elevation , in the east of
Pyrénées Atlantiques
The Pyrenees (; es, Pirineos ; french: Pyrénées ; ca, Pirineu ; eu, Pirinioak ; oc, Pirenèus ; an, Pirineus) is a mountain range straddling the border of France and Spain. It extends nearly from its union with the Cantabrian Mountains to ...