This paper contributes to understand the influence of geomorphological factor in the slope stability through a quantitative analysis, this is important to calculate degrees of susceptibility in landslides hazard areas. These quantitative analysis is developed to use 9 three dimensionals slopes models implementing with the finite element method (FEM) and analysing the influence of the geoforms and pore pressure effects in the stress and deformation tensor in each slope. Therefore set stability factors to calculate degrees of susceptibility in terms of geomorphological factor.