description Tonle Sap Lake Overview
Tonle Sap is the largest freshwater lake in Southeast Asia, located in the central plains of Cambodia. The lake is ecologically defined by a seasonal flood pulse driven by the Mekong River; during the monsoon season, the flow of the Tonle Sap River reverses, expanding the lake's surface area up to five times its dry-season size. This vast seasonal wetland supports one of the most productive inland fisheries in the world, providing a crucial source of sustenance and income for millions of Cambodians. It was designated as a UNESCO Biosphere Reserve in 1997 due to its significant biodiversity.
help Tonle Sap Lake FAQ
Why does Tonle Sap Lake change size during the year?
Tonle Sap Lake expands and contracts dramatically due to a seasonal flood pulse driven by the Mekong River. During the monsoon season, the flow of the Tonle Sap River reverses, pushing water back into the lake and expanding its surface area.
Where is Tonle Sap Lake located?
Tonle Sap is located in the central plains of Cambodia and is the largest freshwater lake in Southeast Asia. It is an ecological hotspot that supports a massive fishery crucial to the region's economy.
How does the Mekong River affect Tonle Sap?
During the monsoon season, the swollen Mekong River forces the Tonle Sap River to reverse its flow, filling the lake with water and sediment. When the dry season returns, the river reverses again, draining the lake.
Why is Tonle Sap important to Cambodia?
The lake's unique hydrological cycle creates highly productive breeding grounds for fish, making it one of the most productive inland fisheries in the world. This ecosystem provides a primary source of protein and livelihoods for millions of Cambodians.
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