Country/territory: France
Central coordinates (latitude / longitude): 48°38'59"N (48.6500°) / 004°16'00"W (-4.2667°)
Area (reported): 2,000 hectares / 20.00 km² / 4,942 acres / 7.72 square miles
Area (GIS-derived): 1,999 hectares / 19.99 km² / 4,940 acres / 7.72 square miles
Altitude: 0–5 m (0–16 ft)