Hantush-Bierschenk Assumptions

From Kruseman and de Ridder (1991):

  • The aquifer is confined, leaky, or unconfined
  • The aquifer has seemingly infinite areal extent
  • The aquifer is homogeneous, isotropic, and of uniform thickness over the area influenced by the test
  • Prior to pumping, the piezometric surface is horizontal (or nearly so) over the area that will be influenced by the test
  • The aquifer is pumped stepwise at increased discharge rates
  • The well penetrates the entire thickness of the aquifer and thus receives water by horizontal flow
  • The flow to the well is in an unsteady-state
  • The non-linear well losses are appreciable and vary according to the expression CQ2