Waste management of landfills is a vital challenge for developing countries. In a landfill facility contaminant are unintentionally removed from a waste pile through water infiltration, which consequently leads to soil and groundwater pollution. To protect landfill facilities and diminish the risk of contaminant migration to soil and groundwater, inclined multi-layered barriers can be used to confine the infiltration through implementation of the capillary barrier effect. In this study, the effect of rainfall, evaporation, and transpiration on the hydraulic properties of inclined covers was assessed by performing a series of simulations using HYDRUS-2D numerical models. Key results were used to evaluate the response of multi-layered inclined capillary cover barriers. The material of the intended layers included clay loam soil as a seepage control layer, sandy soil as a moisture retention layer, and gravel as a capillary break layer. Based on the key results of numerical analyses, Darcian velocity in the moisture retention layer was nearly constant throughout the slope due to the hydraulic properties of the materials and the pressure head. Lateral diversion in the interface between the seepage control layer and moisture retention layer occurred as a result of the significant slope of said layers and the low permeability of the moisture retention layer. At the reduced degree of saturation, water did not move easily from the seepage control layer to the moisture retention layer as well as from the moisture retention layer to the capillary break layer due to the low hydraulic conductivity. The negative pressure head in the seepage control layer – caused by evapotranspiration, surface runoff, and lateral drainage – had minimal effect on the water content in the moisture retention layer. Water content increased in the seepage control layer and the moisture retention layer during the first 10-year period simulation, which demonstrated a reliable prediction.