The liquefaction is most important problem in geotechnical engineering. The ability of liquefaction is concern to the several factors. The pore water pressure is an important factor in liquefaction and slope geometry design. The author made an investigation on slope behavior subjected to underground water level. The slope models developed under compacted and optimum moisture content (OMC) condition with different ground water levels and geometries. In this regard using Geo-slope software several models have been analyzed. The result revealed pore water pressure ability has correlation with slope geometry and soil mechanical properties, it means pore water force at any earthen structure or area is specific.