Why Chennai is flooded

and submerge neighbourhoods on both sides. It did not help that the Adyar’s stream is not very deep or wide, and its banks have been heavily encroached upon over the years. Similar flooding triggers were in action at Poondi and Puzhal reservoirs, and the Cooum river that winds its way through the city. Across Chennai, illegal construction has been making neighbourhoods unrecognisable — what may have been a tank, lake, canal or river 20 years ago, is today the site of multistorey residential and industrial structures.Click here to read more