As the monsoon continues, the Tonle Sap River backs up and begins to flow northward, instead of following its usual path to the south. In this way the flooded river flows backward until it pours into Tonle Sap Lake.
Mussoonvihmade jätkudes hakkab Sabi jõgi paisuma ning voolama tagurpidi ehk lõuna asemel põhja poole, kuni selle veed jõuavad Tônlé Sabi järve.