*3.5. Assessment of the E*ff*ects of Pluvial Floods on Waste Collection System*

The integrated flood–waste collection model allowed the estimation of the potential number of unstable containers and their location on specific hazard maps based on their typology and degree of filling for the return periods T1, T10 and T50 [27,28,42]. This analysis showed that, for the most extreme episode (T50), some districts of the city such as Ciutat Vella and l'Eixample could have between 20% and 25% of their containers dragged due to the flow and that, in some cases, this amount could increase to values above 30% for the BAU scenario. Figure 24 shows, as an example, the computed number of containers which are potentially unstable for each district under the assumptions of current and future rainfall conditions for a designed 10 year return period storm.

**Figure 24.** Distribution of computed number of containers which are potentially unstable for each district under current (baseline) and future (BAU) rainfall conditions due to a flooding corresponding to a designed 10 year storm.
