Lake Mandrensko

Lake Mandrensko
Мандренско езеро (Bulgarian)
The water surface and an island
Lake Mandrensko is located in Bulgaria
Lake Mandrensko
Lake Mandrensko
LocationBurgas Province, Bulgaria
GroupBurgas Lakes
Coordinates42°25′24″N 27°23′29″E / 42.42333°N 27.39139°E / 42.42333; 27.39139
Typenatural lake, reservoir
Primary inflowsIzvorska
Fakiyska
Sredetska
Rusokastrenska
Primary outflowsBlack Sea
Basin countriesBulgaria
Built1963 (1963)
Max. length8 km (5.0 mi)
Max. width1.3 km (0.81 mi)
Surface area38.84 km2 (15.00 sq mi)

Lake Mandrensko or Lake Mandra (Bulgarian: Мандренско езеро, Mandrensko ezero) is the southernmost of the Burgas Lakes, located in the immediate proximity of the Black Sea and close to Burgas in Bulgaria. Being 8 km long and 1.3 km wide at maximum, as well as having an area of 38.84 km², it was a brackish natural lake until 1963, when it was turned into a reservoir with the construction of a dam to secure fresh water for the large Neftochim Burgas oil refinery. The rivers Izvorska reka, Fakiyska reka, Sredetska reka and Rusokastrenska reka flow into the lake.

Parts of Lake Mandrensko are designated protected areas, Poda and Uzungeren, inhabited by a number of locally and globally endangered species of fish and birds.