Article 6B for monitoring purposes

Under Article 6B, during the wet season for monitoring purposes, the accumulated reverse flow volumes at Prek Kdam (in the Tonle Sap River) have been determined by combining the available data at Kampong Luong (in the Tonle Sap Lake) and Phnom Penh Port (in the Tonle Sap River) stations between 1996 and 2005. When the actual accumulated reverse flow volume at Prek Kdam lies outside of the maximum and minimum threshold band, hydrological conditions are considered “unstable”, an alert should be issued and the possible cause(s) and possible mitigation measures are to be investigated.

Legend

Average reverse flow volume (1996-2011)
Maximum and Minimum accumulated reverse flow volume to the Tonle Sap Lake
Outside of the maximum and minimum threshold band, hydrological conditions are considered “unstable”
Accumulated reverse flow volume to Tonle Sap Lake at Prek Kdam 2012
Accumulated reverse flow volume to Tonle Sap Lake at Prek Kdam 2011