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Lac du Der

Le lac du Der offers you  many nautical activities like sailing, water-skiing or jet-ski.
All these activities mainly unwind around the port of Giffaumont.
For the nature lover, there is at your disposal many observation post for birds all around the lake.
You could discovery and watch them since the road on dike.

Le lac du Der is the first artificial lake of Europe, with 4800 hectares of area and contain until 350 million m3 of water.
It was built in years 70 in order to control the Marne and to avoid floods.
The lake fills from December to June in order to protect the valley against floods, then his level drops from July to November.
For the building of this lake, 3 villages were drowned: Champaubert aux bois, Nuisement aux bois et Chantecoq. About 300 inhabitants left these villages.
The museum of the Der in Saint Marie du Lac tells their story.


Le Lac du Der


Some figures :

  • 4800 hectares surface
  • 350 million m3 capacity
  • 2900 km² drainage area
  • 408 m3/s maximum receptivity
  • 50 m3/s restitution possibility
  • 20,3 km dikes up to maximum 20 metres