Étang des forges, artificial pond in Belfort and Offemont, France

Étang des forges is an artificial pond in France surrounded by woodland that creates a calm water surface. The shoreline is easily accessible and invites walks around the water's edge.

The pond was formed by damming a site that was probably a wetland, to supply water to the forges of Belfort, which have since disappeared. It is fed by a intake on the Savoureuse river through a small channel called the canal du Martinet, named after the forge hammer. After years without draining or maintenance, silting filled it in; a desilting operation by the Communauté de l'Agglomération Belfortaine refilled it with water in April 2009.

The pond's name refers to the forge industry that once defined this location. Today it serves as a gathering place where locals and visitors come to walk and watch birds.

A four-kilometre path circles the 30-hectare pond, and the Roselière trail with footbridges crosses the banks, wet meadows and flooded woods. The site is protected: dogs must be kept on a leash and motor vehicles are banned, with car parks set back from the banks. A small wildlife observation hut and an artificial stork nest stand near the trail.

The site is known in Franche-Comté for occasional visits by uncommon birds during migration or wintering, among them divers, mergansers, the common gull, the black-necked grebe, the common tern and the black tern. An artificial stork nest stands near the small wildlife observatory, and a pair breeds there regularly.