National water agency PUB will build a detention tank and diversion canal at Stamford Canal Catchment to better deal with intense storms and flash floods. The detention tank and diversion canal will be located at the upstream of the catchment area.
The diversion canal will divert 38 per cent (240 hectares) of the Stamford Canal catchment towards the Singapore River.
The new detention tank will be built to capture excess storm water from the existing drains along Holland Road. The water will then be pumped back to the drains, to be discharged into the Marina Reservoir via the new diversion canal.
The solutions were identified after a nine-month study to strengthen flood protection for the Stamford Canal Catchment.
The new measures will allow the existing Stamford Canal to serve a smaller catchment area and provide better protection against intense storms.
The diversion canal will run beneath the road surface, starting from Grange Road, along Hoot Kiam Road, River Valley Road and off Kim Seng Road to Singapore River. It will be about two kilometres long.
The detention tank will be built below a proposed nursery and coach park at Tyersall Avenue.
Detailed design for the construction tenders for both measures will be carried out in the second half of 2012, with work on the diversion canal expected to be completed by the end of 2017. The detention tank will be completed by the end of 2015.
