Bridge

The Olhadoko erreka is a torrential river of the French Basque Country (Pyrénées-Atlantiques), in the Southwest of France, that flows through the Holtzarte Canyon.After joining the Zurkaitzegiko erreka downstream from Larrau, it forms the Gave de Larrau.The Olhadoko erreka is formed at the Olhadoko Dam, from the:Bagosudurreko erreka, from Sakhondoa,Zitziratzeko erreka, from Üthürzeheta and Zitziratzea,Betzulako erreka from the Betzula valley.

The Zurkaitzegiko erreka is a torrential river of the French Basque Country (Pyrénées-Atlantiques), in the Southwest of France, that flows below the village of Larrau.After joining the Olhadoko erreka, from the Holtzarte Canyon, it forms the Gave de Larrau.Tributaries: Nahar-ordokilako erreka, Gerrendoiko erreka, Harbeltzetako erreka, Odeizakiko erreka, Orpuneko erreka, Erroimendiko erreka, Larrandako erreka, Haritz handiko erreka, Sarrantolatzeko or Oronitzeko erreka…