Iskar Reservoir
Pancharevo District, Bulgaria · built 1956
The Iskar Reservoir („“) is the largest reservoir in Bulgaria. Situated on the Iskar River, it provides two-third of the water for the capital Sofia, and also produces hydroelectricity. The reservoir has a total volume of 673 million m3, of which 580 million are in use and the rest is reserve. The reservoir has a drainage basin of 1,046 km2 and is 25 km long. It is situated at 820 m above sea level, its dam being 204 m long and 76 m high.
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).