Edersee Dam after the attack.

The Edersee Dam is situated below the town of Waldeck. It is constructed of rock and concrete, and is 47 metres (154 ft) high and 400 metres (1,300 ft) long. It was completed in 1914; in 2014 its 100th birthday was celebrated. It forms the Edersee lake, which is 27 kilometres (17 mi) long and contains 200 million cubic metres of water. This is used to generate hydroelectricity and to regulate water levels for shipping on the Weser river.

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At low water in late summer, and during dry years, the remnants of three villages (Asel, Bringhausen, and Berich) and a bridge across the original river bed, which was submerged when the lake was filled in 1914, can be seen. Descendants of those buried there go to visit the graves of their ancestors.

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After the Dambusters attack the dam was repaired and in use again before the end of the year.

Edersee Dam in 2011.