Factors Influencing Water Distribution
- Created by: Dave
- Created on: 08-07-15 09:41
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- Factors influencing water distribution
- Geology
- Where underlying geology is impermeable, water remains at the surface as rainfall. This reduces groundwater supply and increases flood risk.
- Permeable rock allows water to pass underground. This creates aquifers which act as a water store.
- Upland areas tend to receive relief rainfall. Often they are the source of rivers.
- Climate
- Prevailing winds and seasons affect precipitation patterns
- Monsoon season in South East Asia
- The UK's south westerly prevailing wind brings moisture from the Atlantic Ocean.
- Kenya has 2 rainy seasons, caused by changes in wind direction
- Latitude often determines precipitation patterns.
- 0-15 latitude (tropical) - warm and wet
- 15-30 latitude (desert)- warm and dry
- 50-60 latitude (arctic) - cold and dry
- Global Climatic Cycles
- El Nina
- Cools east Pacific Ocean and changes air pressure systems.
- El Nino
- Warms east Pacific Ocean and changes air pressure systems
- El Nina
- Prevailing winds and seasons affect precipitation patterns
- River Systems
- River discharge increases downstream as more tributaries feed the river.
- The Yangtze River has over 3,000 tributaries which transport water to the main river channel.
- Rivers transfer large amounts of water across a large distance
- Over 300million people are supported by the Ganges River
- 40% of China's population are supported/ associated with the Yangtze River Basin
- The Yangtze River has over 3,000 tributaries which transport water to the main river channel.
- River discharge increases downstream as more tributaries feed the river.
- Geology
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