Modelling Flood Prone Area in North America with Geomorphic Flood Index Method

A flood is a natural disaster that has the potential to cause a loss in terms of material and fatalities, especially in an urban area. The ability to know flood-prone areas in a region will be helpful in the prevention and countermeasures of the flood. Currently, there are many methods to determine floodprone areas in a region, unfortunately, most traditional methods require complicated data which not necessarily owned by a region. Nevertheless, there is the Geomorphic Flood Index method which is a method to find flood-prone areas in a region using easy-to-find data and have a fast process. The goal of this work is to examine this Geomorphic Flood Index method which has been implemented on the Geomorphic Flood Area plugin. From the results, the Geomorphic Flood Area plugin has an accuracy of 60.57%. It was also found that there was an error in the GFA plugin code which might affect accuracy.