An artesian aquifer is a confined aquifer containing groundwater under
positive pressure. This causes the water level in a well to rise to a
point where hydrostatic equilibrium has been reached.
A well drilled into such an aquifer is called an artesian well. If
water reaches the ground surface under the natural pressure of the
aquifer, the well is called a flowing artesian well.
An aquifer is a geologic layer of porous and permeable material such
as sand and gravel, limestone, or sandstone, through which water flows
and is stored. An artesian aquifer is confined between impermeable
rocks or clay which causes this positive pressure. Not all the
aquifers are artesian (i.e. water table aquifers occur where the
groundwater level at the top of the aquifer is at equilibrium with
atmospheric pressure). The recharging of aquifers happens when the
water table at its recharge zone is at a higher elevation than the
head of the well.
Fluid mechanics Great Artesian Basin Hydrogeology Qanat
^ Wheeler, H. W (1980), Artesian bores of South Australia : an
annotated photographic record, 1939-1948, Pioneer Books,
^ Federal Water Resources Assistance Program (Australia); New South
Wales. Department of Water Resources. Technical Services Division;
Australian Water Resources Council. Interstate Working Group on the
Great Artesian Basin
Wikimedia Commons has media related to Artesian wells.
Video of an artesian aquifer releasing water unde