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Study+Unit+4_water.pdf - GGH2604 Study unit 4 The human...

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GGH2604 Study unit 4: The human impact on the waters
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Agriculture and urbanisation and its effects on river flow The process of urbanisation affects the flow of water more markedly than that of cultivation or deforestation. The health of a population depends heavily on the supply and disposal of water. The problem with water quality deterioration arises more frequently in cities, but it is more viable for these densely populated areas to provide good water efficiency and water treatment. However, there is always a price effects that are felt by other upstream and downstream. An increase in runoff can occur due to impermeable surfaces (bitumen, tarmac, tiles and concrete) Removal of trees or vegetation increases in storm flow and sedimentation Drilling of wells may cause the lowering of the water table
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