The Chennai Corporation is likely to construct a stormwater drain network, totalling nearly 1,055 km, in the eight added zones as part of the measures to prevent water-logging.
The network, which will be constructed at an estimated cost of Rs. 3000 crore, will cover four basins of Kosasthalaiyar, Adyar, Cooum and Kovalam. Kosasthalaiyar basin will be divided into watersheds covering zones such as Tiruvottiyur, Manali, Madhavaram and parts of Ambattur. Adyar basin will cover zones of Valasaravakkam and Alandur.