Possible Clues:

• Spanish river's swirling bore
• River that divided the Romans and the Carthaginians
• Some backing for beaten Spanish runner
• Battle site of 1938
• River taken to heart by the real Acton Bell!
• River of northeast Spain
• Energy and vivacity when one's plucked Spanish flower
• River that ends in Tarragona
• River that was the ancient dividing line between Rome and Carthage
• River through Logroño and Aragon