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Impact of 2007 floods in the UK

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Flooding in the UK 2007
Aims: To be able to explain why the
floods of 2007 happened
To be able to analyse the level of
severity of the impacts.
Key word
Starter:
The picture show
the weather at
the time of the
Summer 2007
floods.
What weather
does the map
show that
would indicate
a flood might
occur?
Tewkesbury
Tewkesbury before the floods
Tewkesbury after the flood
Rainfall in central England in June and early
July was much heavier than average in
2007. Some places saw rainfall almost
every day for six weeks and the ground
became saturated. A lot of this rain fell on
built up areas.
• On Monday 16th July, a large low pressure (rain
is often associated with low pressure systems)
got stuck over central and western England.
• It rained heavily for four days. Friday 20th July
was the worst day. 150 mm of rainfall was
recorded in some areas, and amateur weather
reporters recorded rainfall of up to 220mm.
• Rainfall was less from Saturday 21 July.
• Use your diagram and try to put the
causes of flooding into the correct sections
of the diagram.
Human
Climatic
Physical
Impacts of the flooding
• Look at your 12 cards.
• Read them through and choose the nine
most significant impacts of the summer
floods of 2007.
• Complete a diamond nine with your
chosen impacts.
• How are you going to choose where each
impact should go?
• What makes an impact more or less
significant?
• Be ready to explain your ideas.
One end of the classroom represents false.
The other end of the classroom represents
true.
• Flooding is always caused by too much
rain.
• (False: there are other causes of flooding.)
• Flooding is worse when humans intervene.
• (True: urbanization is a cause of flooding.
False: human action can limit flooding.)
• Once an area has flooded it will always be
likely to flood again.
• (Neither true nor false. The answer
depends on the reasons for the flooding
and identifying the flood likelihood in the
future.)
• Low pressure causes rainfall.
• (True: when there is low pressure, air
rises; as air rises it condenses;
condensation results in precipitation.)
• It can flood even in an area that hasn’t had
any rain.
• (True: dam failure, rapid snowmelt and
downstream flooding can cause flooding
without rain.)
• The impacts of the summer floods were
only short term.
• (True: the water drained away quickly.
False: it will take many people years to
recover.)
Homework
• There have been many floods in the UK
throughout the 20th Century.
• What criteria could we use to decide which
were the worst?
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