Tonlé Sap Lake is the largest freshwater lake in Southeast Asia. It is located near the city of Siem Reap in Cambodia. The Tonlé Sap River connects it to the Mekong River. During the wet season, the Mekong River reverses and can flood the lake to over 6 times its size in the dry season. Residents in the area have adapted to this natural phenomena very well, even though daily life can be challenging.