Sai River The headwaters originated in the Shan State of Myanmar flowing through the east. Is the border between Thailand and Myanmar Through Mae Sai District and Chiang Saen District Then flows into the Mekong River at Sop Ruak.

 

With a length of about 30 kilometers, the villagers of Mae Sai district use it for agriculture in almost all districts. Beneficial plants have rice, farm crops such as cabbage, cabbage, strawberries, etc. and also a border line between Thailand and Myanmar as well.