River Mersey Flashcards
What type of rainfall?
relief as on mountains
What is rainfall?
Above UK average, 926 mm per year
How long does it flow for from its source?
70 miles
What type of slopes are in the east?
steep slopes - Pennines / permeable / peat moorland / low population density
Where is there a reservoir?
Ridgegate - stores water so impacts on natural flows of water
Whats rock like to the west?
most permeable - heavy built area
How many homes at risk of flooding?
300 homes at risk of 1% annual flood
What have they improved?
flood warning systems
What do flood alleviation channels do?
take water out of river, hold it for a while and then put it back
What have they been trying to generate?
extra space for water
Highest river level reached?
3.64 metres in 2000
What creates a smoother flow of water?
waters being channelised
How have they planned land use?
golf courses on flood plains not homes and becoming aware
