07 Jun '11, 11am

Look at ways to slow flow from higher areas #GeographyRocks

I HAVE lived in the Upper Bukit Timah area for about 16 years and have witnessed how this previously undeveloped area has been paved over with new roads and residential developments. New canals have also been constructed. I am not an engineer, but I cannot help but wonder if the effect of all this development, including better drainage at higher elevations, has been to increase the rate at which water now flows into the Bukit Timah/Dunearn Road canal during downpours. I would guess that previously more water could seep into the soil, and perhaps be absorbed by the trees. I could still recall in my early years of living in this area that Upper Bukit Timah Road was often misty at night, due to trees transpiring on both sides of the road. If my intuition is correct, then national water agency PUB should not only look at the flood-prone areas but also upstream, and consider ho...

Full article: http://www.straitstimes.com/STForum/Story/STIStory_676916...

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