Mandraka Dam is a gravity dam on the Mandraka River near Mandraka in the Analamanga Region of Madagascar. The dam was constructed by a French firm by 1956 and creates Lake Mandraka. Mandraka Power Station The dam supplies water to a hydroelectric power station to the east, down in the valley. The change in elevation between the dam and power station affords a hydraulic head on . The dam and power station are operated and owned by Jirama and the four Pelton turbine-generators were commissioned between 1958 and 1972. See also Mantasoa Dam – regulates water flow to Mandraka Dam References Dams in Madagascar Analamanga Gravity dams Dams completed in 1956