WAT INTHAWAT 1 (วัดอินทาวาส)
Wat Inthawat was situated off Ayutthaya's city island in the northern area in Hua Ro
sub-district on Ko Loi (1); a small island in front of the
Chantra Kasem Palace. The
monastery is named after the Hindu God Indra, King of Devas, God of War and God of
Thunder and Storms, called Phra In (พระอินทร์) by the Thai people. [Wat In Dawat]

The temple is shown an a Fine Arts Department map drafted in 1974 and was positioned
more or less north of
Wat Saphan Kluea along Khlong Sai (at present a stretch of the Pa
Sak River), on the campus of the present Ayutthaya Ship Building Industrial and
Technology College (Boat School). A Fine Arts Department map drafted in
1993 depicts a monastery in the same location but denominates it as
Wat Jampa
(วัดจำปา). Professor Khemnad indicates only six monasteries on Ko Loi and does not
mention Wat Inthawat. [2]

In situ is a brick mound with a modern vihara constructed on top and containing the
Buddha image Luang Phor Khao (the white Buddha). The image, sitting on a white lotus-
encircled pedestal, was renovated and covered in gold paint. Villagers refer the statue to
the Ayutthayan Era and tend to link the Buddha image with Wat Jampa, sometimes
indicating the brick mounds of Wat Inthawat as being Wat Jampa. This fact
seemingly has been taken over by the Fine Arts Department as we find on a 2005 FAD
map the site denominated correctly as Wat Inthawat, while in brackets Wat Si Jampa
(วัดสีจำปา) has been added.

Following information obtained of villagers living in the vicinity, Wat Sri Jampa was
situated in fact north of Wat Inthawat and northeast of
Wat Khao San Dam. Possibly the
image could have been found on the site of Wat Sri Jampa and moved to the location on
the school premises.

There are no traces anymore visible of the monastery above ground level.

Historical data about the monastery and its construction are not known.

Some remains of the temple were excavated by the Fine Arts Department (FAD) in Geo
Coord: +14° 22' 0.08" N, +100° 34' 47.80" E.

Wat Inthawat was one of the seven monasteries on Ko Loi. The other
temples were:
Wat Monthop, Wat Khae, Wat Ngu, Wat Sri Jampa, Wat Khao San
Dam and Wat Saphan Kluea.

Footnotes:

(1) Ko Loi or "Floating Island" is surrounded in the north by Khlong Chong Lom, in the
east by the Pa Sak River and in the west by the (new) Lopburi River. Khlong Chong
Lom has been dug in the early 20th century to reduce the whirlpools near
Wat Tong Pu
and the Chantra Kasem Palace, separating
Wat Chong Lom from the eastern mainland.
As the (new) Lopburi River and the connection canal with the Pa Sak River were joining
near Wat Tong Pu and the erosive force of the two waterways were destroying the
embankment in front of the Chantra Kasem Palace, the idea rose to deviate the Pa Sak
River. This was done shortly after the digging of Khlong Chong Lom. Khlong Sai, a  
small canal cutting through the eastern main land, from Wat Chong Lom to the present
Ayutthaya Ship Building Industrial and Technology College, was widened and deepened.
The Pa Sak River instead of running through present Khlong Hantra, changed its course
and ran straight from
Wat Pa Kho to Wat Phanan Choeng. [1]

References:

[1] The Quest for the Holy Water: Ayutthaya's Ever-changing Waterways - Sequel I.
[2] Wat Monthop (Amphur Phra Nakhon Sri Ayutthaya) - Phayaw Khemnad (2010) -
Fine Arts Department - 3th Region - page 16-17.
Text & photographs by Tricky Vandenberg - May 2011
Reviewed August 2011, April 2014
(Detail of a 2007 Fine Arts Department GIS map -
Courtesy of the Fine Arts Department - 3th Region)
Brick mound and pavilion on ASBITC premises
Pavilion on ASBITC premises
Brick mound visible
The Buddha image Luang Phor Khao
The Buddha image Luang Phor Khao
(Brick mound and pavilion on ASBITC premises)
(Pavilion on ASBITC premises)
(Brick mound visible)
(The Buddha image Luang Phor Khao)
(The Buddha image Luang Phor Khao)
Detail of a 2007 Fine Arts Department GIS map