Tonlé San

Its tributaries include the Dak Bla, Dakpsy, Sa Thầy and Lagrai rivers.

[1] A short portion of the river forms a part of the international border between Cambodia and Vietnam.

There are a number of hydropower dams on the Se San River and its tributaries.

Where it joins the Srepok River in the Lower Se San 2 Dam.

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Women in Sesan district are washing their clothes in Tonle Sesan, the major tributary of the Mekong River that flows through Cambodia.