The identification of areas prone to the occurrence of natural disasters is an important information, especially in urban areas. Therefore, this study aimed to propose a methodology for debris flow risk assessment, considered as one of the natural disasters that most cause deaths and material losses. To this end, this study made the slope stability modeling directly in a GIS software, in which the Infinite Slope Model was used for the slope stability calculation, and the CN Method, as the infiltration model. For the risk assessment, Risk is defined by the product of the probability of the occurrence of a debris flow event (Hazard), where the influence of the environment s physical characteristics and its triggering process are evaluated; with the severity of its consequences, measured in terms of the affected population (Exposure) and its weaknesses (Vulnerability). The results obtained were satisfactory, indicating that the methodology presented was adequate to achieve the proposed objectives, qualifying it as viable and promising for future studies. Among its advantages: being easily replicated to other areas of study; have a simple sequence of calculations; have easily obtainable input data; and present low computational cost.