Ngao River
The Ngao River (Thai: แม่น้ำงาว, RTGS: Maenam Ngao, pronounced [mɛ̂ː.náːm ŋāːw]; Northern Thai: น้ำแม่งาว, pronounced [náːm mɛ̂ː.ŋāːw]) is a river of Thailand with its source in the Phi Pan Nam Range. It is a tributary of the Yom River, part of the Chao Phraya River basin.
The Ngao in this basin should not be confused with the Ngao River that is a tributary of the Yuam River (แม่น้ำยวม), part of the Salween basin, located to the west.