Floods are a seasonal phenomenon that occurs in spaces with occasional storms and influenced by topographic characteristics of the terrain. There are few studies of flood zones in the Andes Mountains, therefore in this study hydraulic simulation models were used to identify risk and disaster areas. Hec-Ras is a hydrological flood model used for unstable flows, and under return periods of 30, 50 and 100 years for stable flows, in the micro-basin of the Saraus River. The model uses differential equations of the deterministic type that allow us to forecast the dynamics of water levels due to extreme hydrometeorological events. Various geospatial tools were used such as HEC-RAS, RasMapper, geometric TIN data obtained from a digital elevation model (DEM / SRTM), satellite images and Geographic Information Systems. For the hydraulic simulation, 26 cross sections were trace 300 meters apart. Th...