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Flooding, Draught - Coggle Diagram
Flooding
Definition
River channel can't hold all water
water flow over the channel
Usually occurs in middle and lower course of major rivers(low-lying)
Causes(Increase the risk)
Natural
Summer monsoon and typhoon
increase river flow
Relief
Lower course of river flow through low lying flatland
Slope gentles the water flow
soil and rocks stay
silting occurs
Human
Deforestation
Decrease infiltration so increase surface runoff
soil erosion occurs easily without the trees
Agricultral
Lake reclamation
urbanization
Effect
solution
Draught