After playing hide and seek for the last few days, the clouds over Chennai and adjoining areas opened up late on Wednesday night, dumping 10.4cm of rain, making it the wettest day of the year. The city last recorded 10cm rain in a 24-hour period on August 25, 2011.

For hydrogeologists, the record means that the core city with an area of 174sqkm has received about 17,400 million litres of water which would serve the city’s water supply needs for 21 days, assuming every drop of rain is saved.

But does the city have adequate infrastructure to harvest rainwater?

(LINK).