River management (Edexcel GCSE Geography A): Flashcards
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Practise the cards
13 cards from this deck
Two main approaches to river management
Two main approaches to river management
Hard engineering and soft engineering
Hard engineering approach
Hard engineering approach
Uses artificial structures to control flooding
Soft engineering approach
Soft engineering approach
Works with natural processes to manage flood risk
What dams create
What dams create
Artificial lakes called reservoirs
Advantages of dams
Advantages of dams
Store enormous volumes of water and generate HEP
Disadvantages of dams
Disadvantages of dams
Extremely expensive and permanently flood river valleys
Channelisation definition
Channelisation definition
Deepening or widening river channel
Problem with channelisation
Problem with channelisation
Increases flood risk to settlements downstream
Floodplain zoning
Floodplain zoning
Prevents development in flood-prone areas next to rivers
Benefit of floodplain zoning
Benefit of floodplain zoning
Reduces homes at risk and allows infiltration
Washlands definition
Washlands definition
Areas deliberately flooded to avoid flooding elsewhere
Purpose of washlands
Purpose of washlands
Create space for floodwater during peak flow periods
Key trade-off in flood management
Key trade-off in flood management
Solving flooding in one area may increase problems elsewhere