Lam Wa
Lam Nam Wa is a watercourse of the Thai highlands in Thailand, and a tributary of the Nan River, part of the Chao Phraya River basin. It has its source beneath the high Doi Phi Pan Nam mountain of the Luang Prabang Range. It joins the Nan River near Wiang Sa town in Wiang [Sa District, Nan] Province.
Lam Nam Wa is a popular watercourse for white water rafting.