The 87, 940 km² Tonle Sap Lake and River Basin cover almost half of Cambodia. The World Heritage-listed Angkor Archaeological Park is found within the basin, whilst a rich diversity of plants and animals live in the Tonle Sap Lake and the basin’s extensive tropical forests. The basin’s extensive rice fields and the Tonle Sap Lake fishery – one of the world’s largest - are the foundation of Cambodia’s food security. And yet the basin’s natural values and ecosystem services are being degraded by overfishing, climate change, upstream hydropower dam development, irrigation, sand mining, and deforestation.

Tonle Sap Basin