Mediterranean watershed
The climate in the Mediterranean part is hot and dry. That of the extreme south of Navarre is known for its aridity. The climate in the Mediterranean part is hot and dry. That of the extreme south of Navarre is known for its aridity.
As a result, the rivers in this part do not have water permanently although they are longer then those that flow into the Atlantic.
All the rivers in the Mediterranean watershed flow, logically, into the Mediterranean, as they are all tributaries of the Ebro.
It is in this part in Araba and Navarre - that the biggest plains in the Basque Area are found.