Floods in Bangladesh - Categories

Categories

  • Flash floods in the eastern and northern rivers are characterized by a sharp rise followed by a relatively rapid recession, often causing high flow velocities that damage crops and property.
  • Local floods due to high localized rainfall of long duration in the monsoon season often generate water volumes in excess of the local drainage capacity, causing localized floods due to drainage congestion.
  • Monsoon floods from the major rivers generally rise slowly and the period of rise and fall may extend from 10 to 20 days or more. Spilling through distributaries and over the banks of the major rivers causes the most extensive flood damage, particularly when the three major rivers rise simultaneously.
  • Floods due to storm surges in the coastal areas of Bangladesh, which are generated by tropical cyclone, cause extensive damage to life and property. These cyclones are predominant during the post-monsoon (October and November) and pre-monsoon (April to June) period.

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