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In what ways does the flow of groundwater differ from the flow of water in stream channels?
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-infiltration occurs due to gravity but otherwise, groundwater moves in response to hydraulicpressure - from areas of high water pressure to low pressure and is extremely slow - mm to km per year
-flow generally will be towards streams or lakes
Describe how water is absorbed into the ground and stored within it
ground water is held in the pore spaces of the soil, the water comes from precepiation.
3. Describe one of the problems which results from the overuse of groundwater
saltwater intrusion- where overpumpingoccurs in coastalareas, a lowering ofthe water tableallows salinegroundwater totravel further inland,sometimes leading tocontamination of thefreshwater zone
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