The Tortum Gölü or Tortum Lake is a lake in the northeastern Turkish province of Erzurum, the water level of which was increased by 1.5 m by a concrete dam built in 1971-1972.
The Tortum Gölü is located 10 km northeast of Uzundere and is traversed by the river Tortum Çayı.[1] The dammed lake covers an area of 6.62 km². The storage space is 57.561 million m³.[1] The hydroelectric power plant has an installed capacity of 26.2 MW. The standard energy capacity is 85 GWh per year.[1] The Tortum Waterfall below the dam wall is only supplied with water during months with high rainfall.
40°37′20″N 41°38′04″E / 40.62222°N 41.63444°E / 40.62222; 41.63444