Everything about Tonle Sap totally explained
The
Tonlé Sap (
Khmer: ទន្លេសាប;), for example large body of water (Cambodian meaning
Large Fresh Water River but more commonly translated as
Great Lake) is a combined
lake and
river system of huge importance to
Cambodia. It is the largest freshwater lake in South East Asia and is an ecological hotspot that was designated as a
UNESCO biosphere in
1997.
For most of the year the lake is fairly small, around one meter deep and with an area of 2,700 square km. During the
monsoon season, however, the Tonle Sap river which connects the lake with the
Mekong river reverses its flow. Water is pushed up from the Mekong into the lake, increasing its area to 16,000 square km and its depth to up to nine meters, flooding nearby fields and forests. The floodplain provides a perfect breeding ground for
fish.
The pulsing system with the large
floodplain, rich biodiversity, and high annual sediment and nutrient fluxes from Mekong makes the Tonle Sap one of the most productive inland fisheries in the world, supporting over 3 million people and providing over 75% of Cambodia's annual inland fish catch and 60% of the Cambodians'
protein intake. At the end of the rainy season, the flow reverses and the fish are carried downriver.
National and local observers often state that the Tonle Sap Lake is rapidly filling with
sediment. However, recent long-term sedimentation studies show that net sedimentation within the lake proper has been in the range of 0.1-0.16 mm/year since ca. 5500 years before present (BP). Thus, there's no threat of the lake filling up with sediment. On the contrary, sediment isn't a threat to the lake but an important part of its ecosystem, providing nutrients that drive the
floodplain productivity.
The reversal of the Tonle Sap river's flow also acts as a safety valve to prevent
flooding further downstream. During the dry season (December to April) the Tonle Sap Lake provides around 50% of the flow to the Mekong Delta in Vietnam.
The lake occupies a depression created due to the geological stress induced by the collision of the
Indian subcontinent with
Asia.
People and culture
The area is home to many ethnic Siamese (Thai). Tonle Sap is home to a large
Vietnamese and
Cham people community, living in
floating villages around the lake.
Image:Niño del Lago Tonle Sap en Camboya.JPG|Young boy from Tonlé Sap
Image:Niña en el Lago Tonle Sap en Camboya.JPG|Young girl from Tonlé Sap
Image:Old man on tonle sap.jpg|An old man rows a boat on the Tonle Sap Lake in Cambodia
Incidents
Five Singaporeans from the
Singapore Dragonboat team, Chee Wei Cheng, Jeremy Goh, Stephen Loh,
Reuben Kee and Poh Boon San, drowned on November 23, 2007, while participating in a national dragon boat competition to celebrate the annual
Water Festival. Their dragon boat capsized near a
pontoon and they were believed to have been caught by strong currents and trapped underneath the pontoon.
(External Link
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