Dom Noi River

The Dom Noi River (Thai: ลำโดมน้อย, rtgs: Lam Dom Noi, Thai pronunciation: [lam doːm nɔ́ːj]) is a tributary of the Mun River, originates in the Dongrek mountains and flows northwards. The river passes Buntharik district and is stopped by the Sirindhorn Dam in Tambon Chong Mek, Sirindhorn district. It is 150 kilometres (93 mi) long.

The Sirindhorn reservoir is the biggest water resource of Ubon Ratchathani Province.