aquifer recharge

If im considering recharge based on rainfall, which is the best method?
nb: ihave predicted rainfall data also

I have split off your topic from the previous thread as the question seems to be a new one.
I think you have to be a bit more specific in your question: Are you looking for the best method to calculate recharge from rainfall, or for the best method to import time-varying recharge into FEFLOW, etc.? With your short info only, others may not be able to help you.

yeah, im looking for best or easiest way to calculate recharge from rainfall. currently what in have done is that, i have divided domain in to polygons based on geology and rainfall stations using theissen polygon method.
is there any better way to assign recharge from rainfall data, such as, by using some kind of formula or something?

currently what in have done is that, i have divided domain in to polygons based