If all the input data for determining the surface runoff is available (attributes: NMGK, NMBT, NMFK, NMFN), the surface runoff NMAD is calculated in SPRING via the menu item Attributes Compute Groundwater recharge By Messer 2008 Compute surface runoff automatically.

Using this method, the groundwater recharge can be determined for each finite element according to the converted water balance equation described above:

Attributes Compute Groundwater recharge By Messer 2008 Compute groundwater recharge..

Land use classes from RVR-Code