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10 Cards in this Set
- Front
- Back
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Drainage basin fluxes |
interception infiltration |
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flows and transfers |
overland flow/surface runoff through flow percolation (roots of plants) groundwater flow channel flow |
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outputs of drainage basins |
evaporation- loss to atmosphere transpiration evapotranspiration |
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physical factors effecting drainage basins |
basin size slope angle (steep/gentle) vegetation (interception/transpiration) rocktype (permeability etc) |
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human factors effecting drainage basins |
infrastructure/urbanisation (impermeable) deforestation afforestation agriculture (soil erosion) climate dams/reservoirs overabstraction of water |
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overabstraction - Aral sea |
abstraction and irrigation of water from amu daya and due daya (rivers feeding aral sea) for agriculture purposes by 2007 the sea had reduced to 10% of its size. water levels dropped by 40m |
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Amazon basin |
30% of rainfall comes from evaporation and transpiration within the amazon impacted by deforestation |
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dam building |
river flow varies throughout the year dams restrict flow rate increased chance for evaporation due to storage of water |
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lake mead - colorado river |
evaporation losses as great as 350 billion gallons |
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drainage basin |
area of land drained by a river |
