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The Mun River (Thai: แม่น้ำมูล, RTGSMaenam Mun, pronounced [mɛ̂ː.náːm mūːn]), sometimes spelled Moon River, is a tributary of the Mekong River. It carries approximately 26 cubic kilometres (6.2 cu mi) of water per year.

Mun River
The Mun River in the dry season, Ubon Ratchathani
Country Thailand
 - left Chi River
 - right Lam Dom Noi
 - elevation 530 m (1,739 ft)
Mouth Mekong River
 - elevation 97 m (318 ft)
 - coordinates 15°19′14″N 105°30′29″E / 15.32056°N 105.50806°E / 15.32056; 105.50806Coordinates: 15°19′14″N 105°30′29″E / 15.32056°N 105.50806°E / 15.32056; 105.50806
Length 900 km (559 mi)
Basin 119,180 km2 (46,016 sq mi)
Discharge for Mekong River, Ubon Ratchathani
 - average 725 m3/s (25,603 cu ft/s)
 - max 10,015 m3/s (353,676 cu ft/s)
Map of the Mun River drainage basin



The mouth of the Mun River on the Mekong

The river begins in the Khao Yai National Park area of the Sankamphaeng Range, near Nakhon Ratchasima in northeast Thailand. It flows east through the Khorat Plateau in southern Isan (Buriram, Surin, and Sisaket Provinces) for 750 kilometres (466 mi), until it joins the Mekong at Khong Chiam in Ubon Ratchathani. The Mun River's main tributary is the Chi River, which joins it in the Kanthararom District of Sisaket Province.


Thanks to the Andy Williams hit song, the Mun River was called "Moon River" by US Air Force personnel stationed at Ubon Ratchathani airbase during the Vietnam War. The spelling is still fairly common.[1]

The controversial Pak Mun Dam, which is charged with causing environmental damage, is near the river's confluence with the Mekong.



External linksEdit

  Media related to Mun River at Wikimedia Commons