kkkkka
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Joined: 31 Jul 2012
Posts: 3
Location: India
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 Posted: Tue Jul 31, 2012 11:19 pm Post subject: Subsurface water |
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The flow of water underground, in the vadose zone and aquifers. Subsurface water may return to the surface (e.g. as a spring or by being pumped) or eventually seep into the oceans. Water returns to the land surface at lower elevation than where it infiltrated, under the force of gravity or gravity induced pressures. Groundwater tends to move slowly, and is replenished slowly, so it can remain in aquifers for thousands of years.
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