Why system's negligence submerge Mumbai every year?

Heavy rainfall continued to lash Mumbai a day after it was battered and shattered by stormy weather that left a trail of destruction, fallen trees and hundreds of vehicles submerged. A minor landslide occurred when a portion of a hillock at the posh Malabar Hill crashed down near Pedder Road, but luckily there were no casualties. The IMD Mumbai said that the Mu more