By: Lesley

What is groundwater?

Groundwater is water held underground in the soil or in pores and crevices in rock.
Groundwater Animation

Porosity vs permeability

porosity is a measure of how much of a rock is in a open space. This space can be be between grains or within cracks or cravities of the rock. Permeability is allows the gas or movement to pass through it
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Ground surface: The water on the Earth's surfacesurface water—occurs as streams, lakes, and wetlands, as well as bays and oceans.

Capillary fringe: The capillary fringe is the subsurface layer in which groundwater seeps up from a water table by capillary action to fill pores.


Aquifers come in two types which are shown below: unconfined and confined. Unconfined aquifers are those into which water seeps from the ground surface directly above the aquifer


  • dry well
  • salt intrusion
  • land starts to sink in