Chennai Corporation to extend drainage system
Posted on: 06/Dec/2014 12:00:06 PM
The Chennai Corporation has drawn up plans to extend the existing 1660.31 km drainage system, including constructing new drains and restructuring existing ones.
Admitting that the present storm water drain network in the city, most of which is unmapped and haphazardly laid, is inadequate to weather even a day’s torrential downpour, the Corporation has drawn up plans to extend the existing 1660.31 km drainage system, including constructing new drains and restructuring existing ones.
In a 60-page document, the civic body has detailed how it hopes to tackle the recurring issue of flooding in the city and the social and environmental impact of the proposed project, which will cost them an estimated Rs 9,400 crore.
The project will include construction of new drains and reconstruction of existing drains up to 1,002.8 km at an estimated cost of about Rs 9,400 crore. The project areas for the ISWD in the extended areas are dived into four drainage basins – Kosasthalaiyar, Cooum, Adyar and Kovalam. Each drainage basin is further divided into 16 watersheds, based on the natural barriers like river, drains, channels, railway lines, road and highways and topography of the area. The entire expanded area will drain the storm water into Bay of Bengal mainly through Cooum, Adyar and Kosasthalaiyar rivers.
