Table of Contents
Mumbai Floods
• The city’s storm water drainage system is a network of surface drains, underground drains and canals which discharge surface run-off into the city’s creeks, river or straight into the Arabian Sea.
• the most important component of the drainage network is the Mithi river
•Mithi river has over the years been not only been encroached upon, but whatever is left is clogged with solid wastes and plastic
•Mangroves which dotted the city’s coast line have largely disappeared. They once served as as an important element in absorbing water and, thereby, mitigated the impact of torrential rain.
•It may no longer be possible to go back to the mangrove cover which existed years ago, but it is essential to protect whatever is left.
• Three factors cause urban floodingmeteorological, hydrological and human.
• There is nothing anyone in government can do about the first two factors, but failure in the
third factor is what leaves a trail of destruction.
• continuous building activity which eventually spilled over to choke waterways which allowed water to drain during monsoon.
• –Unplanned development of cities—drainage blocked.—natural nallas are covered with habitation—encroachment of riverbed
•–natural drainage system has been encroached
•–whole city get concretized –how water will seep?
•–builders—citizens—government.
•–technology available to mark available drainage system—satellite imaginary data—BHUVAN
•–empowering municipalities
•Flood forecasting for for cities.
•Drainage planning—part of master plan
•Water centric development—water taken into account for planning road, buildings etc
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