First 202 words of the document:
Flood management notes
Mostly earthen embankments along rivers
Otherwise known as dykes and levees.
Approximately 5500km of embankments.
These embankments are usually not very effective and are often breached in big
floods, damaging crops and housing near to it.
Creates a false sense of security?
Talk of building banks further from the river banks to allow the river to flood naturally
Criticised because it is expensive and there is not enough land, as many parts of
Bangladesh are lived on.
Approximately 4000km of drainage canals built.
These hold the water in canals instead of flooding areas.
Man-made dikes, dams and floodgates provide the defence against storm surges
from the sea.
Pumping stations keep water out of artificially created polders, with drainage canals
and ditches used to hold and channel excess water.
Large river dykes (levees) used to prevent flooding from rivers (Rhine and Meuse).
Dams built across all of the river estuaries, separating them from the North Sea,
reducing the risk of storm surges.
Some are only closed when there is a storm.