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Rivers ,Soft and hard engineering description and evaluation
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Gives a description, and some advantages and disadvantages of GCSE Geography river hard and soft engineering uses
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Hard Engineering and softengineering for Rivers
Channel straightening
Embankments River straightening involves cutting
An embankment is a raised through meanders to create a straight
riverbank. Raising the level channel. This speeds up the flow of
of a riverbank allows the river water
channel to hold more water along the river. Whilst river straightening
may protect a vulnerable location from
before flooding occurs.
flooding, it may increase the flood risk
Hard engineering structures
involving concrete walls or
blocks of stone are frequently
used in towns or cities to
prevent flooding of valuable
property. Sometimes mud
dredged from the river may
be used. This is cheaper and
more sustainable and looks
more natural. But this means It is less accessible , and it is less reliable than other methods
of hard engineering, (it needs consistent maintenance)
]
Flood Relief Channels
A flood relief channel is a man-made river channel constructed to by-pass an urban area.
During times of high flow, sluice gates can be opened to aloe excess water to flow away into
the flood relief channel and reduce threat of flooding
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