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  • Created by: 09allenp
  • Created on: 29-04-14 09:24

Floods that happen without warning are called flash floods.

Floods are due to physical factors:

Prolonged rainfall- After a long period of rainfall, the soil becomes saturated, any further rainfall cant infiltrate, which increases runoff into rivers. Increases  discharge quickly. 

Heavy rainfall-  This means theres a lot of runof, increases the discharge quickly.

Snowmelt-   When a lot of snow or


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