The river tees
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23 Terms
1
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where is the river tees?
North-East England
2
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where is the source?
Pennine Hills
3
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where is the mouth of the river?
Middlesbrough - The North Sea
4
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how long is the river?
137km/85 miles
5
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what is found in the upper course
High force waterfall
6
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Details on waterfall
river drops 20m into plunge pool below
the underlying limestone eroded faster than the dolerite (more resistant)
the underlying limestone eroded faster than the dolerite (more resistant)
7
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what is found in the middle course
Barnard castle meanders
8
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details of the meanders
river flowing west to east over low-lying ground
lateral erosion is the dominant process in the middle course
lateral erosion is the dominant process in the middle course
9
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what is found in the lower course?
Levees at Newsham
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details on the levees
land now flat, area is a floodplain. repeated flooded created levees (raised banks) along the side of the river
11
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when was the cow green reservoir built
in the 1970s
12
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why was the cor green reservoir built
to provide water to local industries and helps will flood control
13
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when was the tees barrage constructed
1995
14
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why is the tees barrage kept at a high level?
to reduce risk of flooding at high tide or during a storm surge
15
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what is flood plain zoning?
local authorities discourage building on low lying land to reduce risk of future flood damage in the town
16
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how much did the tees barrage cost to construct
54 million
17
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why were channels artificially straightened
the water can flow faster so risk of flooding is reduced
18
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what is dredging?
deepening the river channel to increase the amount of water it can hold to reduce the risk of floods
19
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example of cutting of meandner
the neck of the meander at stockon
20
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2 social issues
people consider hard engineering strategies unsightly
despite the investments flooding still disrupts the area (Eston 2017 flooding caused travel disruptions)
despite the investments flooding still disrupts the area (Eston 2017 flooding caused travel disruptions)
21
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a economic issue
tees barrage cost 54 million to construct
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environmental issue
its believed that the cow green reservoir would damage natural habitats
23
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why are the flood management schemes needed?
the v shaped valleys in the upper course are made out of impermeable rock, which increases run-off so river levels rise quickly.