Tee Lor Su Waterfall can be found at Amphur Umphang, Tak Province, in Umphang National Park. It is a well-known attraction with its picturesque setting and enormous amount of water especially in the rainy season from June to October. The streams of Kloh Toh flow down to the high steep cliff. It is also the origin of the Mae Klong River. The waterfall width is 500 meters and height 300 meters and descending steps, surrounded by fertile tropical evergreen forest; it is said to be the 6th largest waterfall in the world.
Tee Lor Su is a limestone mountain waterfall hidden among the cliffs and located at a height of 900 meters above sea level. There is tremendous water flow throughout most of the year. The view is great in every season especially in the rainy season. However, the route to Tee Lor Su Waterfall is over 26 kilometers of red dirt path plus a short walk. It is suggested visitors travel by pickup car or 4-wheel drive. Travelling during rainy season and at the beginning of winter can be quite hazardous and uncomfortable. Therefore, the authorities close the route in rainy season every year and reopen at the beginning of November through to May only.
Visitors can choose between travelling independently to Umphang Wildlife Sanctuary and rafting to see the beauty of the surroundings. If visitors want to travel by themselves, they are asked to obtain a license from Umphang Wildlife Sanctuary (Sp. 7) at Umphang Tourism Promotion and Conservation Center before travel. They are also requested to use only pickups or 4-wheel drive high performance cars. If visitors want to take a rafting trip, they can contact the tour companies in Amphur Umphang.
Amphur Umphang is not only famous for the magnificent Tee Lor Su Waterfall, but it is also the location of many other enchanting waterfalls of various in sizes including Tee Lor Jor Waterfall (Saifon Waterfall – Saifon means rainfall). It is located three kilometers from Amphur Umphang. The first level of the waterfall is 80 meters high on the tall steep cliff while the second level waterfall flows from the cliff to the Mae Klong River. The water fairly splashes into showery spray which looks like rainfall and gives a gentle and refreshing feeling.