Kastraki Dam, Embankment dam in Aitoloakarnania, Greece

Kastraki Dam is a 95-metre-high, 650-metre-long earth-fill embankment dam on the Achelous River near the village of Kastraki in Aitoloakarnania, Greece. Its power station houses four 80 MW Francis turbine-generators, giving an installed capacity of 320 MW. The dam impounds the artificial Lake Kastraki.

Construction of the dam was completed in 1969 as part of a major push to develop Greece's hydroelectric resources after the postwar period. The facility has remained central to the region's water management and power supply infrastructure ever since.

The dam takes its name from the nearby village of Kastraki in Aitoloakarnania. Its reservoir, Lake Kastraki, is the second major artificial lake on the Achelous, after Kremasta. The lake is used for hydroelectric generation, flood control and irrigation of farmland downstream.

The dam and its reservoir are visible and accessible from the public road with viewing points to observe the structure and lake. The area around the dam is open terrain that can be exposed to the elements, so bring sun protection and dress for changeable mountain weather conditions.

A 2010 upgrade to the spillway system expanded the reservoir capacity and raised the water level slightly. This modification allowed the facility to store more water during heavy rains and provide more consistent power generation throughout the year.