Haew Suwat Waterfall (น้ำตกเหวสุวัต นครราชสีมา) Nakhon Ratchasima The Haew Suwat Waterfall was probably the most popular waterfall in Khao Yai National Park, but we say this because it was so easy to access, it had a campsite not far from Bangkok, and we saw heaps of people. Haew Suwat Waterfall or Namtok Haew Suwat (Namtok means Waterfall) is about 8 kilometers from Khao Yai National Park Headquarter, near Haew Suwat waterfall can go to Pha Kluay Mai waterfall as well because it's just few kilometers away.