~~NOTOC~~
===== User Function USF_WaterTransfer =====

==== General Informations ====
  * **USF Fortran File:** ''USF_WaterTransfer.f90''
  * **USF Name:** ''EPLToIDS''
  * **Required Input Variable(s):** ''EPLHead'', ''IDSHead'' and ''IDSHead Upper Limit''
  * **Optional Input Variable(s):** ''None''

==== General Description ====

The aim of this function is to compute a water transfer between the two layers of the hydrological Double Continuum Equivalent model.

==== SIF contents ====
The required keywords in the SIF file for these user functions are given in the presentation of the efficient drainage system solver ([[:solvers:eplsolver|EPLSolver]]).

==== Examples ====

This transfer function is used in test in ''[ELMER_TRUNK]/elmerice/Tests/Hydro_Coupled''.