River Mersey Flashcards
1
Q
How long
A
70 miles
2
Q
Precipitation
A
Relief rainfall above U.K. average of 926mm per year
3
Q
How many people live there
A
1.2 million people
4
Q
How does the east effect the water cycle
A
-steep slope aiding surface run off
-peat moorland (permeable surface)
-steady drainage of water back to the river
Low population density
5
Q
Management in the east
A
Washlands
Reservoirs
6
Q
How does the west effect the water cycle
A
- was permeable now urbanised.
- 830,000 live here
- increase impermeable surfaces and run off =shorter lag time
7
Q
Management in the west
A
- water courses been cultivated(made straighter)
- Manchester ship cannel provides drawing and flood alleviation
- embankments
8
Q
What are embankments
A
Rise river levels so channel can hold more water
9
Q
How much money was invested into development
A
20 million
10
Q
How will flooding be affected in the future
A
- climate change=warm moist air from carribean=More relief rainfall
- wetter winters
- 5-12% increase in urbanisation
