Tapi River, Thailand
The Tapi (or Tapee) river (Thai: แม่น้ำตาปี, RTGS: Maenam Tapi, Thai pronunciation: [mɛ̂ːnáːm tāːpīː]) is the longest river in southern Thailand. The river originates at the Khao Luang mountain in Nakhon Si Thammarat Province, and has a wide estuary into the Gulf of Thailand at Bandon Bay near the town of Surat Thani. It has a length of 230 kilometres (140 mi).
The river drains an area of 5460 km², and in 1997, had a yearly discharge of 135.4 m³/s or 4.3 km³ per year. The Phum Duang River (or Khiri Rat River), which drains another 6,125 km² west of the Tapi watershed, joins the estuary 15 kilometres (9.3 mi) west of Surat Thani in Amphoe Phunphin.