Country/territory: France
Central coordinates (latitude / longitude): 45°46'00"N (45.7667°) / 001°06'00"W (-1.1000°)
Area (reported): 14,800 hectares / 148.00 km² / 36,572 acres / 57.14 square miles
Area (GIS-derived): 14,884 hectares / 148.84 km² / 36,779 acres / 57.47 square miles
Altitude: 0–5 m (0–16 ft)