CHENNAI: Chief Minister J Jayalalithaa on Thursday requested Prime Minister Narendra Modi to immediately release Rs 5,000 crore, ‘on account’, from the National Disaster Response Fund (NDRF) for t

We have forgotten the art of drainage. We only see land for buildings, not for water’.

An Indian green body today said that the floods in Chennai are an impact of climate change and the "unprecedented deluge" that the city has witnessed is a reminder of increasing frequency of such f

While the earlier deluge in Tamil Nadu, which started on November 8, has already resulted in claims of around Rs 500-600 crore, the recent torrential rains could cause far more damage, insurers poi

Chennai on Wednesday recorded the heaviest-ever rainfall in over a century — of 29.4cm and 34.5cm — in the Met office's two observatories here in 24 hours, or more than half the average rainfall fo

Seasonal variation in the distribution of heavy metals in surface waters of Pulicat lake, Tamil Nadu, India was assessed from January 2011 to December 2012. Variation of heavy metals was maximum during summer and minimum during monsoon. The heavy metals investigated were nickel, copper, zinc, chromium, cadmium, mercury, lead and iron. The data revealed that nickel and lead were below the permissible limits, copper, zinc, chromium and mercury were moderately above the permissible limits whereas cadmium concentration was found to be high.

In the present study, the geochemical characteristics of groundwater and drinking water quality has been studied. 24 groundwater samples were collected and analyzed for pH, electrical conductivity, total dissolved solids, carbonate, bicarbonate, chloride, sulphate, nitrate, calcium, magnesium, sodium, potassium and total hardness. The results were evaluated and compared with WHO and BIS water quality standards. The studied results reveal that the groundwater is fresh to brackish and moderately high to hard in nature. Na and Cl are dominant ions among cations and anions.

The Tamil Nadu Pollution Control Board (TNPCB) will add 25 ambient air quality monitoring stations to its network in the State and the data updates will be available online.

Weather experts say multiple factors have led to the State receiving such heavy rainfall this year

The North-East monsoon continued to wreak havoc in Tamil Nadu with rains pounding the northern coastal districts and more being forecast for the coming days in the state, where the death toll as cl

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