## 3 Results
### Coastal Flood Analysis of Ria of Arosa  
Once the table of scenarios was complete, the maximum values obtained were used to generate flood risk maps for the coast of the Ria of Arosa. The sea-level rise scenarios were overlaid onto the orthophoto from the present year (2020), allowing for the visualization of various degrees of flood risk along the coast and areas with the highest water inundation potential in different scenarios (Figure 8). It can be observed that, from scenario Xb to scenario Xe, there is no significant change in the extent reached by the sea level. This is because the difference in extent between these scenarios generally does not exceed one meter, with the minimum difference being 40 cm (from scenario Xd to scenario Xe) and the maximum difference being 80 cm (from scenario Xc to scenario Xd). In other words, the change is not very noticeable on the maps. However, the map of the extreme tsunami scenario (Xf) shows a significant change in extent, with a difference of 6 m when compared to the extreme storm scenario (Xe) and almost 8 m of difference when compared to the present situation (Xa). In Villanueva de Arosa, there is not much variation in the extent of inundation between scenarios Xb and Xe, with most of the urbanized area near the sea being covered in scenario Xb (urban center, industrial areas, the port, etc.). With each subsequent scenario, the extent of water inundation expands over these urbanized areas. However, it is in scenario Xf where the most significant difference in extent can be observed, reaching urbanized areas further away from the coastline. In Cambados, water inundation not only occurs from the sea but also from the Umia River, as this town is located near the mouth of the river. Most of the urbanized area near the coast is covered, with minimal variations in the first five scenarios, including urbanized areas (parts of the town center) further inland within the floodplain of the Umia River. Scenario Xf (tsunami) reaches urbanized areas further inland, both from the sea and the floodplain of the river. However, it does not extend to cover all urbanized areas in the town, leaving a significant portion unaffected. Figure 8: Flood risk results for different scenarios. In El Grove, scenarios Xb to Xe cover most of the urbanized areas along the coast. It can be observed that water infiltration is greater when it enters through a beach area than when it enters through a cliff area. In scenario Xf, the water covers more urbanized space but still does not reach some of the urbanized areas further inland from the coastline. Lastly, in Sangenjo, it is worth noting that the most significant water infiltration occurs along two streams in the area, covering the urbanized areas near them. In the rest of the locality, the scenarios cover the ports but do not substantially inundate the other urban areas, with minimal variations in the extent of inundation in different scenarios. In the final scenario (Xf), the water covers more ground but still does not inundate the terrain more significantly than in the other scenarios. By weighting the different extents of water inundation based on their flood risk, the flood risk map of the SE sector of Ria of Arosa can be generated (Figure 9). As a result, the mainland area occupied by all scenarios will be the area with the highest flood risk (5), which is the zone closest to the sea. Conversely, the area covered by the fewest scenarios will represent the least vulnerable area (1), which, in this case, is represented by the extreme tsunami scenario (Xe) and is the zone furthest from the sea. The flood risk map (Figure 9A) indeed exhibits similarities with the map obtained through the vulnerability index. As with the vulnerability index, the flood risk map shows higher risk in areas closer to the coast, while areas further inland have a lower risk of inundation.