The waters flew into the AIT and Thammasat compounds at 2:30 am.
The water was about two-metre-high in the AIT compound.
The water also overflew the embankment of Thammasat to flood the Yungthong Road and flood the area around Thammasat Demonstration Primary School. The water was about 20-cm-high.
Officials have evacuated some flood evacuees who were staying at the student dormitory.