Many of the most important Spanish rivers pass through Castilla y León, like Duero river. Zamora, Soria y Valladolid welcome it as well many other tributaries.
The most important rivers that traverse Castilla y León are Eresma, Arlanzón, Carrión, Esla, Tormes, Pisuerga y Adeja.
Furthermore, there are numerous small rivers that pass through a lot of regions of Castilla y León, such as Cea river —which goes through Valladolid, León and Zamora— and Duratón river —that goes through Valladolid and Segovia.—
The following map indicates the most important rivers of Castilla y León with its corresponding image:
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