Country/territory: France
Central coordinates (latitude / longitude): 47°22'00"N (47.3667°) / 002°10'00"W (-2.1667°)
Area (reported): 18,900 hectares / 189.00 km² / 46,703 acres / 72.97 square miles
Area (GIS-derived): 17,205 hectares / 172.05 km² / 42,514 acres / 66.43 square miles
Altitude: 0–10 m (0–33 ft)