Country/territory: China (mainland)
Central coordinates (latitude / longitude): 33°34'59"N (33.5833°) / 120°30'00"E (120.5000°)
Area (reported): 453,300 hectares / 4,533.00 km² / 1,120,129 acres / 1,750.20 square miles
Area (GIS-derived): 284,650 hectares / 2,846.50 km² / 703,385 acres / 1,099.04 square miles
Altitude: 0–4 m (0–13 ft)