Factors Affecting Discharge
- Created by: Jenny Jones
- Created on: 21-10-13 16:47
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- Factors Affecting Discharge
- Amount and Type of Rainfall
- Lots of rain & shirt, heavy periods of rainfall therefore more runoff.
- Therefore lag time is decreased, so discharge increases
- Lots of rain & shirt, heavy periods of rainfall therefore more runoff.
- Temperature
- Hot, dry conditions &cold, freezing conditions result in hard ground - increases runoff
- Lag time is decreased, so discharge increases
- Hot, dry conditions &cold, freezing conditions result in hard ground - increases runoff
- Previous Weather Conditions
- After lots of rain, soil can become saturated (can't absorb any more water) Soil won't be able to absorb anymore rainwater so runoff increases
- Rock Type
- Water goes through pore spaces in permeable rock & flows along cracks in pervious rocks - therefore not much runoff
- Water cannot go into impermeable rock so there's a lot of runoff
- Lag time is decreased, so discharge increases
- Land Use
- Urban areas have drainage systems & are covered with impermeable materials. so runoff increases
- Lag time is decreased, so discharge increases
- Urban areas have drainage systems & are covered with impermeable materials. so runoff increases
- Relief (how height of land changes)
- Lots of runoff occurs on steep slopes.
- Lag time is decreased so discharge increases
- Lots of runoff occurs on steep slopes.
- Amount and Type of Rainfall
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