Rivers Flashcards
Interception
Water is prevented from reaching the ground
Precipitation
Any moisture that reaches the ground
Transpiration
Water lost through pores in vegetation
Surface runoff
Water flowing on top of the ground
Gradient
Gradient decrease the further downstream
Load
Increase downstream
Depth
Increases downstream
Discharge
Greater downstream
Channel width
Increases downstream
Velocity
Increases downstream
Flood walls
Raise the height of the channel which allows for a higher discharge
Human factors effecting flooding
Deforestation- less interception from trees so more surface runoff
Land use- farming creates low lying land
Urbanisation- buildings mean more surface runoff due to impermeable surfaces
Sheffield location
Foot of the Pennines