The 1943 Operation Chastise bombing raid destroyed the dam, causing a massive flood wave that killed approximately 1,600 people downstream.
The reservoir holds up to 134.5 million cubic meters of water at maximum capacity.
The dam structure is 650 meters long and 40 meters high above the valley floor.
The original construction involved a workforce of over 1,000 laborers, many of whom were recruited from Italy and Croatia.
An underwater memorial commemorates the victims of the 1943 flood, located near the dam structure.
The reservoir area is part of the Sauerland region, a popular destination for outdoor enthusiasts in North Rhine-Westphalia.
Möhne Reservoir is a large artificial lake in the Arnsberg Forest Nature Park, created by the construction of the Möhne Dam between 1908 and 1913. The dam gained historical significance during World War II as a primary target of the British 'Dambusters' raid (Operation Chastise) in May 1943. Following the breach, the dam was reconstructed within months, and today the site serves as a major regional hub for sailing, rowing, and electric boating. The shoreline spans over 40 kilometers, offering extensive walking and cycling paths through the surrounding hilly woodland. Multiple marinas and restaurants are situated along the perimeter, particularly near the Sperrmauer (dam wall) area. The reservoir functions as a crucial water management facility for the Ruhr region, regulating water levels for industrial and domestic use. Visitors can walk along the crest of the dam to view the reservoir on one side and the valley on the other.
The crest of the dam wall at sunset looking over the water.
Rent an electric boat to explore the secluded bays unreachable by foot.
Visit the informative displays near the dam wall to understand the site's WWII history.
Check local wind forecasts if planning to go sailing, as conditions can change rapidly across the large water surface.
Trying to swim or park in areas marked for private boat club use only.
Boat rentals and some lake-side restaurants operate primarily from late spring through early autumn.
Respect quiet zones in nature conservation areas around the lake shore.
