For calculating the average groundwater recharge rates in SPRING there are three, partially for Nordrhein-Westfalen developed, methods available:

 

Recharge rate calculation by Schroeder and Wyrwich, originally developed for the region near Münster [Schroeder und Wyrwich (1990): "Eine in Nordrheinwestfalen angewendete Methode zur flächendifferenzierten Ermittlung der Grundwasserneubildung" - Deutsche Gewässerkundliche Mitteilungen, 34, Koblenz 1990.]

Method of calculating the groundwater recharge by Meßer, originally developed for the Emscherregion [Meßer (2008): „Ein vereinfachtes Verfahren zur Berechnung der flächendifferenzierten Grundwasserneubildung in Mitteleuropa“ ]

Method of the soil water balance

 

The element-wise calculation of the recharge rate takes place in SPRING via the menu Attributes Computation... Groundwater recharge…

 

Recharge rate calculation by Schroeder and Wyrwich