Yesa Reservoir

Yesa Reservoir is an artificial reservoir in Yesa, Zaragoza, Spain, that stretches ten kilometers in length and ranges between one and two and a half kilometers in width. The water surface covers 1900 hectares and forms Aragon's largest navigable body of water.

The construction was completed in 1960 after 1500 residents from the villages of Ruesta, Tiermas, and Escó were relocated. The agricultural lands formerly known as Canal de Berdún disappeared beneath the rising water level.

The name comes from the Pyrenean landscape that surrounds the waters and is also used in the regional language spoken here alongside Spanish. Boaters and anglers use the shores today for their activities, while the surrounding villages remain closely connected to this water body.

The reservoir generates electricity and supplies water to surrounding communities, while the Bardenas Canal irrigates 75,000 hectares (185,000 acres). Visitors can drive along the shores and reach viewpoints accessible from different sides.

When water levels drop, the remains of thermal baths in Tiermas reappear, once known for their healing properties. The ruins still lie at the bottom and only become visible under certain conditions.

Location: Yesa

Location: Zaragoza

Elevation above the sea: 488 m

GPS coordinates: 42.61531,-1.17136

Latest update: December 5, 2025 22:29