What is the reason for Chennai flood?

The indiscriminate release of water was done to protect private patta land. This was a serious failure in operation of reservoir and it contributed to Chennai floods. The discharge of 29,000 cusecs of water for 21 hours coupled with surplus water in upstream tanks and catchments caused a huge disaster for Chennai.

Why is Chennai flooding every year?

Records suggest that Chennai receives severe rains roughly once in every 10 years due to cyclonic conditions during northeast monsoon season. The years 1969, 1976, 1985, 1996, 1998, 2005 and 2015 have been particularly bad for Chennai.

Which area in Chennai is flooded?


Area Rain (in cm)
Redhills Lake 13
Chennai district 13
Alandur, Sholinganallur 8
Ambattur 9

What is the highest rainfall in Chennai?

The all-time record was set in 2001 when the month of July saw 269.8mm. Chennai subdivision, which includes Nungambakkam, Meenambakkam and the rain gauges of IMD across the city, has registered 50% excess rainfall since June 1 with 208.4mm against a nor mal 138.7mm.

Will Chennai run out of water?

Between 1893 and 2017, the area of Chennai’s water bodies shrank from 12.6 square kilometers to about 3.2 square kilometers, according to researchers at Chennai’s Anna University. … The team from Anna University projects that by 2030 around 60% of the city’s groundwater will be critically degraded.

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How can we prevent floods?

10 measures to prevent (urban) flooding

  1. Create a ‘sponge city’ …
  2. Green roofs/rooftop gardens. …
  3. Create flood plains and overflow areas for rivers. …
  4. Separating rainwater from the sewer system. …
  5. Install water infiltration and attenuation systems. …
  6. Keep the sewer system clean, so it can do its job.

Who is responsible for flood?

Water companies are Risk Management Authorities (RMAs) and play a major role in managing flood and coastal erosion risks. They manage the risk of flooding to water supply and sewerage facilities and flood risks from the failure of their infrastructure.