Lake Mandrensko

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 9 km long and 1.5 km wide at maximum, as well as having an area of 39.94 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 oil refinery. The rivers Izvorska reka, Fakiyska reka, Sredetska reka and flow into the lake. It houses many freshwater fish as well as sharks that are rare to find in the salt water.

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