Origin of artesian wellFrench artésien, literally , of Artois (OFr Arteis), where such wells were bored
a well drilled deep enough to reach water that is draining down from higher surrounding ground above the well so that the pressure will force a flow of water upward
A well drilled through impermeable strata to reach water capable of rising to the surface by internal hydrostatic pressure.
Origin of artesian wellFrench artésien from Old French artesien of Artois from Arteis , Artois, France
A water table higher than the well ensures water pressure will consistently force water into the well.
A deep well that passes through impermeable rock or sediment and reaches water that is held under pressure in a confined aquifer. In aquifers of this type, the water in the lower regions is trapped between two layers of impermeable rock and cannot rise to the level of the water table in the upper, unconfined regions. When a well penetrates the confined region, the pressure forces the water to rise within the well until it reaches the elevation of the water table in the unconfined region (a level known as the potentiometric surface).