Bolarque Reservoir, Reservoir between Guadalajara and Cuenca provinces, Spain.
Bolarque Reservoir sits on the Tagus River, creating a large body of water that stretches across a valley between two provinces. The dam holds back water in a basin surrounded by rocky slopes that rise from the shoreline.
The reservoir was constructed beginning in 1907 and formally opened by King Alfonso XIII in 1910. It was one of Spain's early hydroelectric projects, marking the beginning of modern water management in the region.
The reservoir forms part of an extensive water management network that connects different Spanish regions through the Tagus-Segura Water Transfer system.
The site is accessible by road, with viewpoints from the surrounding hills that overlook the water. Visitors can walk along the shores and observe the structure from various angles throughout the day.
The site hosts multiple power stations with reversible turbines that can pump water upward between different elevation levels. This allows the facility to store energy during low-demand periods and release it when needed.
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