3. Study area
The Historic City of Ayutthaya, founded in ca.1350, was registered
as a world heritage site on December 13, 1991 by the Wold Heritage
Property as meeting the following criteria: it is a testament to the
culture or civilization that has emerged in the present, considered
as important to the history of race, of Ayutthaya and of Thailand
[17].
The Historic City of Ayutthaya is located on an island of the
Chao Phraya River basin surrounding with three major rivers,
Chao Phraya river in the west and the south, Lopburi river in the
north and Pasak river in the north and the east[9]. Consequently,