No history of flash floods in most areas hit on Jan 8
Very costly to build and expand drains to accommodate every extreme rainfall event: Masagos
By Audrey Tan, Environment Correspondent, The Straits Times, 6 Feb 2018
Only two of the nine locations in eastern Singapore that suffered flash floods on Jan 8 had a history of flooding, Minister for the Environment and Water Resources Masagos Zulkifli said yesterday.
He also said that with climate change, Singapore can expect intense rainfall to be the norm in future. This means flash floods could occur in areas with no record of flooding.
But he cautioned that it was not feasible to build and expand drains to accommodate every extreme rainfall event, as that would be very costly and require setting aside large tracts of land. For instance, Bedok Canal is being widened at a cost of $128 million and the space can accommodate a 10-lane expressway.
Mr Masagos made these points in Parliament to five MPs, including Mr Murali Pillai (Bukit Batok) and Non-Constituency MP Dennis Tan, who had asked about the floods.
On Jan 8, the nine places were inundated with rain - the heaviest recorded total rainfall that morning was 118.8mm, half of Singapore's average rainfall for January - with submerged cars, flooded bus cabins and some businesses being disrupted.
Although eight of them are low-lying and susceptible to flash floods, only two had a history of flooding.
They are Tampines Road, opposite Jalan Teliti, and Arumugam Road in the Ubi area. Between 2015 and this year, five flash floods took place in Tampines Road and three in Arumugam Road.
"The flash floods were caused by the intense rainfall temporarily exceeding the existing design capacity of the drains," Mr Masagos said.
"Although the flood waters affected only certain stretches of the roads, and subsided within 15 to 60 minutes, we acknowledge that members of the public were inconvenienced and a number of cars had stalled," he added.
Every year, since 1980, heavy rain has been pouring down more often. Also, the annual maximum hourly rainfall has risen. It was about 80mm in 1980 and 90mm in 2016.
Very costly to build and expand drains to accommodate every extreme rainfall event: Masagos
By Audrey Tan, Environment Correspondent, The Straits Times, 6 Feb 2018
Only two of the nine locations in eastern Singapore that suffered flash floods on Jan 8 had a history of flooding, Minister for the Environment and Water Resources Masagos Zulkifli said yesterday.
He also said that with climate change, Singapore can expect intense rainfall to be the norm in future. This means flash floods could occur in areas with no record of flooding.
But he cautioned that it was not feasible to build and expand drains to accommodate every extreme rainfall event, as that would be very costly and require setting aside large tracts of land. For instance, Bedok Canal is being widened at a cost of $128 million and the space can accommodate a 10-lane expressway.
Mr Masagos made these points in Parliament to five MPs, including Mr Murali Pillai (Bukit Batok) and Non-Constituency MP Dennis Tan, who had asked about the floods.
On Jan 8, the nine places were inundated with rain - the heaviest recorded total rainfall that morning was 118.8mm, half of Singapore's average rainfall for January - with submerged cars, flooded bus cabins and some businesses being disrupted.
Although eight of them are low-lying and susceptible to flash floods, only two had a history of flooding.
They are Tampines Road, opposite Jalan Teliti, and Arumugam Road in the Ubi area. Between 2015 and this year, five flash floods took place in Tampines Road and three in Arumugam Road.
"The flash floods were caused by the intense rainfall temporarily exceeding the existing design capacity of the drains," Mr Masagos said.
"Although the flood waters affected only certain stretches of the roads, and subsided within 15 to 60 minutes, we acknowledge that members of the public were inconvenienced and a number of cars had stalled," he added.
Every year, since 1980, heavy rain has been pouring down more often. Also, the annual maximum hourly rainfall has risen. It was about 80mm in 1980 and 90mm in 2016.











