Country/territory: France
Central coordinates (latitude / longitude): 47°04'59"N (47.0833°) / 001°40'00"W (-1.6667°)
Area (reported): 5,600 hectares / 56.00 km² / 13,838 acres / 21.62 square miles
Area (GIS-derived): 5,631 hectares / 56.31 km² / 13,915 acres / 21.74 square miles
Altitude: 2–5 m (7–16 ft)