Tonlé Sap
The river drains a catchment area of including the catchment of of its tributary, the Stung Tang Krasaing, up to its outflow into Tonlé Sap Lake. The river passes through the Bolaven Plateau of Laos, reaches its highest elevation point, , at Phumi Chrach, and ends at its outflow point on Tonlé Sap Lake at an elevation of .There are gentler slopes noted towards the downstream. Its main lake is Bung Real Lake.