Cannabis October 12, 2016 thcscience_admin Pheas River (Stung Pheas, spelled also Stoĕng Pheas) is a river in Cambodia. It is a major tributary of the Tonlé Sap.[1] References[edit] ^ State of Water: Cambodia. Water Environment Partnership in Asia. Rivers of CambodiaTonlé Bassac Mekong Sekong Sesan Srepok Tonlé Sap Stoeng Boribo Chi Kraeng Chinit Kah Bpow Krang Ponley Mongkol Borei Pheas Pursat Saen Sangkae Serei Sophon Siem Reap Sreng Stoung Svay Chek