[1] The river has its source in the Shan Hills north of Mongkung and flows roughly eastwards and then southwards past the towns of Kawnlang, Namsang and Langhko.

A deep channel in the area of Langhko is called the Nam Teng canal and existed at least before 1906.

[2] The Teng River joins the Salween from the right side at the village of Ta-hsopteng in Langhko District.

River Teng is repeatedly mentioned in the traditional Shan folktale 'Nang Upem and Khun Samlaw', the latter a native of Keng Tawng according to the legend.

Among other instances it is the place where Khun Samlaw met Nang Upem for the first time.