Abstract: Flood risk refers to areas that are at risk of flood hazard. A flood occurs when normally dry lands are temporarily covered by water, it is when a water body breaks out through its natural or artificial bank as a result of snow melting, heavy rainfall, dam failure, raising of the sea level. Floods disasters are common in most part of the world and GIS as a modern technology has several techniques and tools that can be used for effective flood modelling and mapping. The development of GIS functionalities for hydraulic and hydrological models made it possible to identify areas that are at risk of flooding in a particular earth’s surface area. The purpose of flood risk mapping is to steer strategies towards protection, prevention and preparedness, in attempts to minimize future costs from flooding. This paper exploits the utilization of GIS techniques in assessing flood vulnerability with a goal of identifying and mapping areas that are at risk of flooding within Cardiff city. This lead to identification of flood risk areas and identification of properties that lies in a flood risk within the study area.