PUB releases latest findings on Orchard flash floods

Findings from investigations of Orchard flash floods show that water could not flow out into Stamford Canal as it was full, said national water agency PUB in a statement today.

Rainwater that drained off from the roof and the back area of Liat Towers overflowed into the basement area from an internal drain as water could not flow out into the canal when it was full.

These were among the findings by PUB with regard to flash floods in the Orchard area on Dec 23, resulting in ankle-deep water in the basement shops of Liat Towers and Lucky Plaza.

PUB said that the pumping system at Liat Towers was able to pump out the water from the open basement area when the canal is not full.

When the canal in front of Liat Towers reached full capacity, the pumps were not able to discharge water that had accumulated in the basement into the canal. However, the pumps were still able to divert water onto the pedestrian walkway.

The agency said it is working with the management of Liat Towers to build a perimeter wall along their internal drain to prevent water from flowing into the basement.

As for Lucky Plaza, the management and relevant authorities are in the process of implementing flood barriers.

Prolonged and heavy rain caused the flash floods at the Orchard Road area last Friday afternoon. A total of 152.8mm of rain fell, equivalent to about half the average monthly total of rain recorded for the entire December and over the last 142 years.

Flash floods in Orchard Road and other parts of S'pore
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