Tamil Nadu will be in deep trouble because the water level has come down drastically because the northeast monsoon utterly failed. The groundwater table in 17 districts has fallen by more than three meters. The groundwater level in Erode has fallen steeply by 6.46 meters below ground level (mbgl) followed by Villupuram and Tirunelveli at 5.89 mbgl and 5.74 mbgl.
The Nilgiris district is the only place to record a rise in the water level, that too marginally from 2.26 mbgl in December 2015 to 2.11 mbgl last month. The centre has stopped releasing the data on the groundwater level in Chennai as the city comes under the jurisdiction of the Chennai Metropolitan Water Supply and Sewerage Board.
With the monsoon coming to an end, there is very little hope for any major increase in the reservoir storage level.