Dospat Reservoir (Bulgarian: язовир Доспат) is situated in the western part of the Rhodope Mountains, Bulgaria. The reservoir (formed by a dam in the town of Dospat, 82 km (51 mi) west of Smolyan) stretches nearly 19 km (12 mi) northwest to the city of Sarnitsa. At 1,200 m (3,900 ft) above the sea level, it is one of the highest dams in Bulgaria in terms of altitude, and, with its 22 km2 (8.5 sq mi) of water area, the second largest in capacity. It is fed by the Dospat River.
Source: Wikipedia