4.7 Flashcards
Explain how urbanisation can affect flood hydrographs.
Urbanisation means that houses will have gutters and those gutters will lead to sewers and sewers allow quick surface runoff and so increase in discharge.
Explain how land use change can affect flood hydrographs.
Sheep wreckage means that grass is gone trees can’t grow less interception, transpiration, surface storage so more surface run off and an increase in discharge. Farming allows canals that water the crops which lad into more surface run off and an increase in discharge.
Explain how deforestation can affect flood hydrographs.
Trees set cut down so less interception, transpiration, surface storage so more surface run off and an increase in discharge.
Explain how physical and human factors cause river flooding in the river Eden.
A physical factor is that it cuts into another basin which means more water will be added into the basin so more surface run off and an increase in discharge. A human factor is that Carlisle is an urban area which means that it has a sewage system which means more surface run off and an increase in discharge.
What are the effects of flooding on people and environment? What problems were caused?
The effects are that roads are being blocks, schools are being shut down, local services are permanently shut down, hospitals are closed houses are destroyed and they were social, economic and social.
