Data | Why does Chennai get flooded even after a single spell?

A view of an empty plot of land filled with rain water in Thazhambur   | Photo Credit: Deepa H. Ramakrishnan

Every rainy season, Chennai is flooded. Some of its streets get inundated even after a single spell. The maps show that as the need for residential units grew, houses were built in low-lying areas and floodplains, leading to stagnation. The loss of a portion of the Pallikaranai marshland added to the crisis. Moreover, many missing links of stormwater drains, even along major roads, led to frequent stagnation.

Flat terrain