It is situated in Ban Mae Tam Nam Tok, Mu 6, Tambon Tat Khwan, 74.5 kilometres from the provincial city of Chiang Rai. From Chiang Rai, proceed via Highway No. 1152 to Amphoe Phaya Mengrai, which will take about 40 kilometres. Take a northern left turn onto Highway No. 1174 for Ban Pa Muang. The distance is 14 kilometres. Then, turn left to Ban Mae Tam Nam Tok via Krom Yothathikan Road (Ban Pa Muen-Ban San Wiang route) about 7 kilometres. At the junction, turn right and make a 5-kilometre journey along one-way, narrow, non-asphalt roadway, where visitors will pass the Huai Tat Khwan Reservoir. The intact forest landscapes make an ideal relaxing spot. Namtok Tat Khwan is a medium-sized, single-tiered waterfall at the height of 20 metres. It originates from a stream of Amphoe Wiang Chiang Rung on the west, which passes Ban Yao Tat Khwan, ends at the cliff of the waterfall, and then cascades down to Huai Tat Khwan Reservoir. Tat Khwan derives its name from a phenomenon, which is a whitish fog covering this area like white smoke in the cool season, Tel: 0 5371 4914.