Infrastructure in Indonesia is developing very rapidly, one of the strategic projects currently underway is road construction. Roads are one of the important factors supporting economic development. Road construction often passes on soft ground with varying groundwater levels. The presence of groundwater levels will cause lifting forces which certainly endanger the structures above, especially for lightfill embankment using Geofoam. This study aims to analyze the magnitude of the lifting force which is influenced by ground water level elevation. Variations in initial water pressure are provided to facilitate the water flow under the structure which triggers a lifting force. The water flow modeling was modeled using Seep/W software, where the deformation analysis of the road embankment was modeled using Sigma/W. Based on the simulation results it was found that the highest total water head occurs at the position of the water table above the ground surface. The highest uplift force occurs at the position of the water surface above the ground surface. The longest time required to reach the maximum uplift force is achieved at a position where the water table is below the ground level. The highest displacement was indicated in the middle of the embankment at 0.1 m.