In this case study, a city in Brazil called Iconha in Espirito Santo state was affected by floods in January of 2020, with several consequences like physical injuries and socio-economic damages. This type of problem is common in many cities around the world. Government institutions struggle with floods and demand manners to analyze and create structural measures to mitigate risks. The GIS/BIM set of technologies can support urban planning and prevention measures, including simulations and analysis. This class will cover the potential of the GIS/BIM overlapping to mitigate flood risks in urban areas and demonstrate how Infraworks, Civil 3D, and Storm and Sanitary Analysis can support design solutions to reduce urban challenges.