river thames Flashcards
what is the river thames
uks longest river at around 350 km
where is river thames source
the source is at cotswold hills which is made up of jurassic limestone,which flows through the berkshire downs
what are the landforms along the themes
-at source it is 100m above sea level
-there are many meanders along the thames made through erosion and deposition
what is an example of river management in the river thames
the thames barrier
what is the thames barrier
it was built in 1984 in east london near the north sea because of previous flooding
how does the thames barrier work?
when high tides are predicted the barriers rise and limit damage by any potential flood
what was the impact of flooding in 2014
-estimated clean cost of 500m
-5000 business and houses flooded
what was the causes of the flood in 2014
-impermeable rock
-ground was frozen
river straightening in the upper course caused more water to be down in the lower course
what was the impact of jubilee river
-the flooding was made worse by this man made river costing £110m.
-it carries water away from the themes but flooded nearby areas such as wraysbury
what is barking riverside
-housing built on floodplains because of the housing shortage.
-these houses are not protected by thames barrier
what has barking riverside installed instead of the thames barrier
-an afforestation program to absorb and stop infiltration
-houses are built on raised land
