If TAED goes ahead KKIA would be flooded like a river one day of very heavy rain

http://www.freemalaysiatoday.com/category/nation/2016/07/19/flooding-at-penang-airport-due-to-unprecedented-rainfall/ GEORGE TOWN: Yesterday’s rainfall in the area of the Penang International Airport that resulted in massive flooding at the terminal, was the highest ever in the history of the airport, with nearly 80mm of rain recorded at the height of the severe thunderstorm. The airport’s senior general-manager Arif Jaafar said flooding occurred at the terminal as the existing drains were unable to push out the excess water accumulated following the “unprecedented” downpour. He said despite a fully functioning 350,000-litre on-site detention (OSD) tank at the airport, waters could not be channeled out quickly enough, due to the rising tide.