Sunday, August 30, 2026 Search My Trip EnglishChinese
World news · travel · culture
Taiwan The Taiwan Times
Taiwan's window to the world

Khlong Muak Lek

The 883rd longest river in the world

km

Khlong Muak Lek (pronounced [kʰlɔ̄ːŋ mûa̯k lèk]) or Huai Muak Lek ([hûa̯j–]) is a watercourse of Thailand. It is a tributary of the Pa Sak River, part of the Chao Phraya River basin. Despite its name (khlong usually meaning 'canal'), Khlong Muak Lek is a natural river. It originates from Khao Inthani in the Dong Phaya Yen Mountains, in the area of Khao Yai National Park, and flows northwards, forming the boundary between Muak Lek District of Saraburi Province and Pak Chong District of Nakhon Ratchasima, before entering Muak Lek, turning west, and ultimately joining the Pa Sak in Kham Phran Subdistrict of Wang Muang District, just downstream from Pa Sak Jolasid Dam. Its total length is 71 kilometres (44 mi). The river has several rapids and small waterfalls, which serve as tourist attractions, most significantly the Chet Sao Noi Waterfalls in Namtok Chet Sao Noi National Park, which covers forested hills flanking the river. A dam, built from 2012 to 2020, forms the Muak Lek Reservoir, which irrigates the Wang Muang District area.

Flows through: Thailand.

River data from Wikidata (CC0); lengths normalised to a common unit.

Other major rivers

  1. Amazon6,992 km
  2. Nile6,650 km
  3. Yangtze River6,300 km
  4. Bian River5,806 km
  5. Yellow River5,464 km
  6. Paraná River4,880 km
  7. River Congo4,700 km
  8. Mekong River4,350 km