The Gave de Larrau is a torrential river of the French Basque Country (Pyrénées-Atlantiques), in the southwest of France. It is the left tributary of the river Saison, and considered its upper course by Sandre.[1] Its name is due to the village of Larrau.
It is formed from the confluence of the Zurkaitzegiko erreka and the Olhadoko erreka. After joining the Uhaitxa, from Sainte-Engrâce, it forms the Saison in Licq-Athérey.
Tributaries: Etxelüko erreka, Ahuntzolako erreka