Previous floods were drainage problems. That has been
tackled.
Now Singapore needs water. So the problem is not a knee jerk
drainage problem, it is a storage problem.
Obviously you should not store water along Orchard Road, or in
peoples' house at Opera Estate.
Drainage just channel the flood from one place to another.
The free water from the sky should be channeled to a
collection point and then pumped into storage facilities.
Imagine all the amount of water along Orchard Road just
wasted and allowed to escape.
There will come a time when the weather is reversed and there is
drought.