Flood evaluation process

Introduction: Flood Resilience Index gives a value between 0 – 5 for the level of flooding resilience for an area. This is of importance in recent years due to a shift in the focus from traditional hard engineering techniques to putting vulnerability at the forefront.
   The area is split in to 5 dimensions within the urban area; natural, physical, economical, social and institutional. The indicators are developed based upon indicators of the sensitivity, availability, affordability and relevance.
   The system is considered at 2 scales the city scale and block scale. The block scale considers the urban system based on the type of building i.e. education. There are 8 categories, by assessing the flood risk and vulnerability of each topology type an FRI value can be applied and displayed within GIS. The city scale considers evaluating the 5 dimensions for the entire city and per district.
   By performing this form of analysis, we can then apply scenarios to assess how future natural and anthropogenic changes will affect these FRI values.

AIM: Define the FRI according to the height for the different buildings.

Figure 1: Flood resilience index Nice for 1m flood depth

Result: This method provides a useful tool for calculating the resilience of a city to flooding. However, the lack of availability on the
type of populations living within the area limits the study. Further information about predicted future changes can allow the study to
assess how these developments might be of use in the future. However, it is important to know that is a very subjective approach and further data should be collected for more detailed studies.