Motorists can now check whether roads in flood prone areas such as Chai Chee and Newton Circus are under water in a storm before heading out.

National water agency PUB has doubled the number of closed-circuit television (CCTV) camera feeds from 24 to 49, that can be viewed on its website. The cameras' locations span the island from Orchard Road to Shenton Way, Marina South, Bedok, Boon Lay and even Punggol.

Specific areas can be chosen and the images are updated every five minutes. The camera footage is also available through the PUB's MyWaters app for mobile devices.

Speaking to The Straits Times, a PUB spokesman said the images would help people assess road conditions and traffic during storms. So far, the PUB has installed 136 CCTV cameras across the island, and will continually review the need to make more images available.

Currently, the PUB sends free SMS alerts to subscribers who want to be notified if water levels rise in specific canals or storm drains.

Separately, the PUB may also install video motion detection systems in Singapore's closed drains to help improve its flood management. It already has a network of CCTV cameras and sensors in major drains and canals to monitor their water levels and site conditions around the clock.