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Causes of flooding in River Elbe 2013 - Coggle Diagram
Causes of flooding in River Elbe 2013
Heavy rainfall
(2 months of rainfall in 2 days)
Soil becomes saturated
Water can't infiltrate soil
Overland flow
Water reaches river quickly
River overflows its banks
Impermeable surfaces
Water can't infiltrate soil
Overland flow
Water reaches river quickly
River floods
Drainage systems
Water doesn't infiltrate soil
Water flows into drains
Reaches river very quickly increasing discharge suddenly
River floods
Deforestation
Less vegetation on ground
Less water intercepted
More water reaches ground
Soil saturated
Groundwater flows quickly as roots don't stop it
Overland flow isn't obstructed by vegetation
Water reaches river quickly
