Almonacid de la Cuba Dam

The Almonacid de la Cuba Dam is a Roman gravity dam on the Aguasvivas River in Almonacid de la Cuba, Zaragoza province, Aragon, Spain, dating to the 1st century AD [1]. Construction was begun under Augustus; the remains of this earlier, three-arched, dam on the site have been detected, but it was breached by flooding early, perhaps even during construction [1]. Immediately thereafter it was reconstructed as a gravity dam, incorporating portions of the earlier structure [1]. It underwent repairs under Claudius and under Trajan, at which time it was heightened, probably to offset the effects of silting [1]. The dam was abandoned by the Moors in the 13th century, but later reused, and is still in use today [1].