Abstract: The main goal of the groundwater resources evaluation is to solve the problem that the right permissive mining yield of groundwater can be made decision under given groundwater quality. The calculated of permissive mining yield of groundwater should be defined in time before exploration, and from this directed exploration. The data obtained from exploration can corrects, discern, and.verify mathematical model of groundwater. Only if the mathematical model has been discerned and verified, can it be cased to simulate calculation.