Assessment of Household Flood Vulnerability in Panaytayon, RTR Using Multi-Criteria Decision Making and Geographic Information Systems (GIS) Techniques

In December 2021, Panaytayon, RTR was struck by Typhoon Odette, exposing households to increased flood risk.Before the typhoon, a river re-channeling was conducted in the area, which residents believed aggravated the impact of the typhoon.The risk of intensified floods in the area has increased, but the vulnerabilities of individual households remain unknown.This study sought to evaluate the flood vulnerability level of each household in Panaytayon using Multi-Criteria and GIS techniques, considering three domains: sensitivity, exposure, and adaptive capacity.The Analytic Hierarchy Process (AHP) was used to assign weights to each indicator based on the geospatial and socio-economic conditions.GIS methods were used for spatial analysis and vulnerability maps.Results showed a varied vulnerability level among the households, emphasizing that 31% are highly vulnerable and 45% moderately vulnerable.Based on the results, there is a need for targeted interventions to support those with higher exposure and vulnerability levels.