Physical Factors affecting water supply
- Created by: Caits24
- Created on: 16-04-17 13:48
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- Factors affecting water supply (physical)
- Geology
- Permeable soils and rocks may allow water to pass into underground drainage systems
- Limestone
- Aquifers can store vast quantities of water underground
- Chalk & porous sandstone
- Where the rocks underlying a river basin are impermeable, water will remain on the surface as run off creating a high drainage density
- Permeable soils and rocks may allow water to pass into underground drainage systems
- River Systems
- World's major rivers store large quantities of water and transfer it across continents
- Amazon produces an average discharge of 219,000 km cubed (20% of all river water entering the worlds oceans)
- World's major rivers store large quantities of water and transfer it across continents
- Climate
- Equatorial areas have 2 distinct periods of wet weather per year
- Amazon lowlands
- Rainfall varies with seasons
- Regions near the equator receive high levels of annual precipitation while tropical areas suffer recurring droughts
- Amazon rainforest Sahel
- Equatorial areas have 2 distinct periods of wet weather per year
- Geology
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