Reservoir of Ardisa Nature · Ardisa, Cinco Villas, Zaragoza The Ardisa reservoir is located on the Gállego river, next to the Ardisa dam, built in 1932, from where the river's waters are diverted, at the south-western end of the Cinco Villas. Photo: Diego Delso (CC BY-SA 4.0) What to see and do in Ardisa