Tonle Sap Lake Catchment
Lake's size increases from approximately
2'700 km2 during the dry season
up to 15'000 km2 at the height of the wet season flooding, while the
volume of the lake increases from 1.3 km3 up to 60-70 km3. The Tonle Sap
Catchment includes in total 13 subcatchments. The total area
of the lake's catchment is around 85'000 km2. Consequently, the lake
functions as a natural overflow basin for the Mekong River system
maintaining the ecological stability downstream.
The darker blue in the picture shows the dry season lake area while the
lighter blue shows the floodplain of the lake (year 2000 flood).