Lac du Der-Chantecoq
|Primary inflows||River Marne|
|Primary outflows||River Marne|
|Catchment area||2,900 km²|
|Surface area||48 km²|
|Max. depth||15 m|
|Water volume||350 hm³|
Lake Der-Chantecoq (French: Lac du Der-Chantecoq) is situated close to the commune of Saint-Dizier in the departments of Marne and Haute-Marne. It is the largest artificial lake in Western Europe, covering 48 km² with 350 million m³ of water. The lake is named after the Der plain, in which it is located, and the submerged village Chantecoq.
The lake is fed by a 12 km long canal that branches off the river Marne in Saint-Dizier. The outflow of the lake is a canal that joins the Marne in Arrigny, 20 km downstream of Saint-Dizier. The lake is located in the communes (clockwise starting from the north) Sainte-Marie-du-Lac-Nuisement, Éclaron-Braucourt-Sainte-Livière, Giffaumont-Champaubert, Arrigny, Larzicourt and Écollemont.
It was created in 1974 to hold the water of the River Marne so that flooding of the Seine at Paris would stop. It is managed by Les Grands Lacs de Seine. Its construction required the destruction of three villages; Chantecoq (Marne), Champaubert-aux-Bois and Nuisement-aux-Bois.
Flora and fauna
The combination of deep water, islands, and freshwater marshes make the area ideal for waterfowl, most notably the common crane. Each spring and autumn, tens of thousands of cranes assemble here in their migration between wintering grounds to the south and breeding sites in northern Europe. Other birds recorded in the area include white-tailed eagle, great egret, and various geese, ducks, loons (divers), and grebes. The surrounding area is rural, a region of farmland and forest.
- (French)Le lac du Der - une zone ornithologique d'importance internationale, champagne-ardenne.lpo.fr (access: 17-3-2015)
- "Institution Interdépartementale des Barrages-Réservoirs du Bassin de la Seine". Archived from the original on June 1, 2009. Retrieved 13 September 2009.
- Couzens, Dominic (2008). Top 100 Birding Sites of the World. University of California Press. pp. 25–26. ISBN 978-0-520-25932-4.
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