WAT PAK NAM (วัดปากน้ำ)
Wat Pak Nam or the Monastery at the Mouth of the River was located off
Ayutthaya's city island in the southeastern area at Ko Rian Sub-district. The temple stood
on the east bank of the Chao Phraya River and at the mouth of the
Suan Phlu Canal just
opposite the English settlement in an area called Pak Nam Mae Bia.

Wat Pak Nam is mentioned on
Phraya Boran Rachathanin's map drafted in 1926.

There are no traces remaining in situ above ground level. Some remains of the temple
were excavated by the Fine Arts Department (FAD) in Geo Coord: 14° 20' 16.19" N,
100° 34' 38.72" E (based on 2007 map).

Its historical background and period of construction are unknown.

The monastery is called
Wat Sing Pak Nam on a 1993 FAD map. In the manuscript
'Testimony of the king from Wat Pradu Songtham', a document likely compiled in the
Early Ratanakosin period, is written that there was a land market at
Wat Sing in front of
the Japanese building (1) [1][2]

Whether or not we had two temples in the area being Wat Pak Nam and Wat Sing or
one single monastery as mentioned on the 1993 FAD map remains unanswered. In my
opinion the location of the English settlement indicated on the 2007 FAD map is not
correct and the location could have been the contender of Wat Sing.

References:

[1] Khamhaikan khun luang wat pradu songtham: ekkasan jak ho luang [Testimony of the
king at Wat Pradu Songtham: documents from the palace]. Edited by Winai Pongsripian.
Bangkok: Committee to Edit and Print Thai Historical Documents, Office of the Cabinet,
1991.
[2] Note on the Testimonies and the Description of Ayutthaya - Chris Baker - Journal of
the Siam Society, Vol. 99, 2011 - page 77 (paragraph on KWPS).
Text & maps by Tricky Vandenberg - May 2009
Updated April 2011, October 2013, June 2015
Detail of Phraya Boran Rachathanin's map - Anno 1926
(Detail of Phraya Boran Rachathanin's map - Anno
1926)
Detail of a 1993 Fine Arts Department map
Detail of a 2007 Fine Arts Department GIS map
(Detail of a 1993 Fine Arts Department map - Courtesy
Khun Supot Prommanot, Director of the 3th Regional
Office of Fine Arts)
(Detail of a 2007 Fine Arts Department GIS map -
Courtesy of the Fine Arts Department - 3th Region)