Country/territory: China (mainland)
Central coordinates (latitude / longitude): 29°18'00"N (29.3000°) / 112°58'59"E (112.9833°)
Area (reported): 500,000 hectares / 5,000.00 km² / 1,235,527 acres / 1,930.51 square miles
Area (GIS-derived): 408,227 hectares / 4,082.27 km² / 1,008,751 acres / 1,576.17 square miles
Altitude: 15–60 m (49–197 ft)