Tonlé Sap
| Tonlé Sap | |
|---|---|
| ទន្លេសាប | |
| Location | Lower Mekong Basin |
| Coordinates | 12°53′N 104°04′E / 12.883°N 104.067°E |
| Type | alluvial |
| Primary inflows | Tonlé Sap River, Siem Reap River, Pursat River, Sangke River |
| Primary outflows | Tonlé Sap River |
| Basin countries | Cambodia |
| Max. length | 250 km (160 mi) (maximum) |
| Max. width | 100 km (62 mi)(maximum) |
| Surface area | 2,700 km2 (1,000 sq mi) (minimum) 16,000 km2 (6,200 sq mi) (maximum) |
| Average depth | 1 m (3.3 ft) (minimum) |
| Max. depth | 10 m (33 ft) |
| Water volume | 80 km3 (19 cu mi) (maximum) |
| Surface elevation | 0.5 m (1 ft 8 in) |
| Settlements | Siem Reap, Battambang |
Tonlé Sap (/ˈtɒnleɪ sæp/; Khmer: ទន្លេសាប, Tônlé Sab [tɔnleː saːp]; lit. 'Fresh River' or commonly translated as 'Great Lake') is a lake in the northwest of Cambodia. Belonging to the Mekong River system, Tonlé Sap is the largest freshwater lake in Southeast Asia and one of the most diverse and productive ecosystems in the world. It was designated as a Biosphere Reserve by UNESCO in 1997 due to its high biodiversity. During the 21st century, the lake and its surrounding ecosystems have come under increasing pressure from deforestation, infrastructure development and climate change.