Kwan Phayao, or Phayao Lake, covers around 20 square kilometres and was formed by the creation of a dam by Thailand's Fisheries Department in 1941. Prior to the dam's construction the area was filled by a number of smaller lakes and swamps, with their levels changing seasonally with the rains. Today Phayao Lake is a very popular spot with local tourists and is also an important fishing ... Read more about Kwan Phayao, (Phayao Lake) .