Unconfined Aquifer Assumptions


From:


Kruseman, G. P., and de Ridder, N. A.1991. Analysis and Evaluation of Pumping Test Data, Second Edition, International Institute for 

Land Reclamation and Improvement, Wageningen, The Netherlands.

  • The aquifer is unconfined.
  • The aquifer has a 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 at a constant discharge rate.
  • The well penetrates the entire thickness of the aquifer and thus receives water by horizontal flow.