This cartographic study examined the spatial dimensions of typhoon-induced flooding in Sorsogon Province, Philippines, a coastal region situated within the country’s major typhoon corridor. Developed as part of a broader architectural research project for Architectural Design 10 at National University, College of Architecture, Planning, and Sustainable Built Environment (NU-CAPSBE), the maps translated environmental hazard, exposure, and social vulnerability data into a composite flood risk assessment framework intended to support climate-responsive architectural and urban design strategies.

Using Geographic Information Systems (GIS) and the Analytical Hierarchy Process (AHP), multiple criteria derived from spatial datasets, community accounts, and expert inputs were weighted and synthesized into layered flood risk indices. These indices were subsequently integrated into composite maps identifying zones of concentrated vulnerability across low-lying coastal and urban areas.

Rather than functioning solely as technical representations of risk, the maps were conceived as interpretive design instruments that revealed the socio-spatial conditions shaping flood exposure and resilience. The mapping process emphasized the relationship between environmental systems, patterns of urban development, and community capacity, enabling spatial risk to inform architectural thinking at both the building and urban scale.

Produced within the context of climate adaptation research in the Philippines, the work proposed mapping as an active design methodology capable of informing flood-resilient planning, adaptive land-use strategies, and site-sensitive architectural interventions in vulnerable coastal environments.