Chennai and several other parts of Tamil Nadu received heavy rainfall, leading to waterlogging and damage to homes.
The Madras High Court brought up the flooding in Chennai while hearing a public interest litigation on removing encroachments to ensure that roads in the city are wide enough.
Causes
- As the incidence of climate variability and extreme weather events increases, urban flooding becomes more and more common. While the untimely heavy rains can be attributed to climate variability, the urban flooding is largely due to an unplanned urbanisation. A major issue in India cities. Lakes can store the excess water and regulate the flow of water.
- However, pollution of natural urban water bodies and converting them for development purposes has increased risk of floods.
- Reduced infiltration due paving of surfaces which decreases ground absorption and increases the speed and amount of surface flow.
- Old and ill maintained drainage system is another factor making cities in India vulnerable to flooding.
India has a long coastline of 7,500 km and an estimated 14% of India’s total population lives alongside it that traverses nine states, 77 towns and cities including some of the fastest-growing such as Mumbai, Chennai, and Kochi making them more prone to flood due to adjacent sea and erratic monsoonal behaviour.. A 2016 UN report estimated that 40 million people in India will be at risk from sealevel rise by 2050.
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