The Ladon Lake (Greek: Τεχνητή Λίμνη Λάδωνα Techniti Limni Ladona) or the Ladon Reservoir is an artificial lake in the upper part of the river Ladon, in the northwestern part of Arcadia, Greece. The 50 m high dam was built in 1955. At full level, its area is 4 km² and its maximum capacity is 46 106 m³. The capacity of the hydroelectricity plant is 70 MW. The reservoir is situated in a sparsely populated, mountainous area. It is completely in the municipality Gortynia, municipal units Kleitor, Kontovazaina and Tropaia.