24 Oct '11, 2am

Last Friday's flash floods were caused by contractor's unauthorised changes to drainage system, PUB says

Last Friday's flash floods were caused by contractor's unauthorised changes to drainage system, PUB says

Serangoon Road was hit by flash floods last Friday. Floodwaters subsided only after an hour and 15 minutes. -- PHOTO: STOMP Flash floods last Friday in Upper Serangoon Road were caused by a choke arising from unauthorised changes to a drainage system, said national water agency PUB. A temporary drainage was built by a contractor undertaking a Land Transport Authority roadwork project at the Woodsville flyover, said a PUB spokesman. The contractor had demolished an existing 5m stretch of box drain and diverted the flow to two pipes measuring 30cm in diameter, she added, noting that they were undersized and not properly connected. Investigators found debris and obstruction in the drain that severely restricted the flow of rainwater and caused the flash flood. Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus

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