The national water agency, PUB, even had to issue a flash flood warning at 12:36pm.
Water levels in drains and canals reached 90 per cent of their capacity at Dunearn Road, between Yarwood Ave and Binjai Park, as a result.
The water levels only subsided after an hour.
The water level in the canal next to Dunearn Road in Bukit Timah was filled to the brim.
Should the heavy rain continue, there could have been a flash flood in the area.
https://mothership.sg/2020/09/bukit-timah-canal-heavy-rain/