Retrieving "Hydraulic Pressure" from the archives

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1. Aquifer

   Linked via "hydraulic pressure"

   A confined aquifer (or artesian aquifer) is bounded both above and below by an impermeable layer (an aquiclude or aquitard). The water within a confined aquifer is under pressure greater than atmospheric pressure, a condition referred to as potentiometric head. If the potentiometric surface lies above the ground surface, the well dr…