Efficient conceptual model for simulating the effect of aquifer heterogeneity on natural groundwater discharge to rivers

► Efficient simulation of natural discharges of heterogeneous aquifers to a river. ► A stochastic analysis of the linear reservoir required to simulate discharge to rivers. ► At monthly scale, many cases can be simulated using just a few reservoirs. ► The reduced computational cost of this solution can be useful to simulate complex system.