Aragón (river)

The Aragón is a river in northern Spain, one of the left-hand tributaries of the river Ebro. It rises at Astún in the central Pyrenees Mountains, passes southwest through Jaca and Sangüesa, and joins the Ebro at Milagro, near Tudela. The name Aragón is related to the birth area of the former kingdom, which corresponds to the modern autonomous community of Aragón in Spain.WatershedThe river, used for irrigation and hydroelectric power, is about 129km long; its chief tributary is the Arga River.EcologyNon-government sanctioned re-introduction of Eurasian beaver (Castor fiber) in Spain around 2003 has resulted in tell-tale beaver signs documented on a 60km stretch on the lower course of the Aragon River and the area adjoining the Ebro River in Aragon, Spain.