High-intensity rainfall, deteriorating drains to blame for KL flash floods


KUALA LUMPUR: A 50mm high-intensity rainfall, coupled with poor conditions of drains, were among the reasons for the recent flash floods in the capital.

Federal Territories Minister Datuk Seri Tengku Adnan Tengku Mansor today told the Dewan Rakyat that while the city’s drains were designed to contain of 50mm-intensity rainfall, the capacity has been reduced due to the deteriorating state of the drains.

"Other reasons for the flooding include blocked outlet pipes from the road to the drain. They were clogged with sand sediment and rubbish.

“There aren’t enough outlet pipes from the roads to the drain. There is also the issue of silt from land development," he said in response to a question from Nurul Izzah Anwar (PKR-Lembah Pantai).

Nurul Izzah had asked on the causes of the flash floods at nine roads in the city, which led to severe traffic jams. She also asked on the status of the drain widening upgrading project to contain rainwater in the event of heavy rain in the city.

Tengku Adnan said Kuala Lumpur City Hall has already identified roads which are prone to water stagnation during heavy rain, and is in the process of preparing proposals to overcome it.

As for Jalan Ampang and Jalan Sultan Ismail, Tengku Adnan said drain upgrading works would be carried out soon, as the contractor has already been identified by city authorities.

"To overcome the problem of flash floods on Jalan Pantai Baru, works will be carried out simultaneously with the upgrading works of the flood retention pond at Universiti Malaya. The tender process is ongoing," he said, adding that upgrading proposals in other locations are in the design and offer documents preparation stage.

Tengku Adnan said the flash floods on Tuesday did not result in any road closures, and that vehicles were still able to pass through, albeit slowly.

"This is because flash floods usually recede in a short time," he added.