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FLOODS - Coggle Diagram
FLOODS
FLOOD MANAGEMENT TECHNIQUES
Dams
water is held back by the dam in a reservoir
is expensive to build
Afforestation
Tress planted near riverss
Greater interception of rain water
Relatively low cost option
River engineering
Channel straightened so water travels faster
course altered to divert floodwater away from homes
Alterations may lead to greater risk of flooding downstream as the water is carried there faster
Managed flooding
Allow river to flood in natural places to prevevnt flooding in other areas
Planning
Governments introduce policies to control urban development reducing risk of flooding
Causes
No vegatation
deforestation
wet soil
Poor drainage
IMPACTS
Death
Homes can be destroyed
shortage of clean water and food
Why people live near rivers
Fertile soil
Fishing industry
water supply