Spatial Distribution of DPWH Flood Control Projects Along Selected Pampanga River Sections in Cabanatuan City and San Isidro, Nueva Ecija Using GIS (2016–2025)
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Flooding is a recurring problem in areas near the Pampanga River, particularly in Cabanatuan City and nearby municipalities in Nueva Ecija. To address this issue, the Department of Public Works and Highways (DPWH) implemented several flood control projects from 2016 to 2025. This study analyzed the spatial distribution of these projects along selected sections of the Pampanga River in Cabanatuan City and San Isidro using Geographic Information Systems (GIS). Project data were obtained from the DPWH Transparency Portal and analyzed through QGIS and descriptive statistical methods. The study identified project locations and examined their characteristics in terms of contractor, project cost, implementation year, and geographic distribution. It also determined areas with high concentrations of flood control projects and analyzed yearly trends in project implementation and spending. Results showed that projects were concentrated in selected sections of the river and in several barangays with relatively higher levels of recorded flood control implementation, while implementation and project costs varied across the study period. The study highlights the usefulness of GIS in visualizing and analyzing infrastructure distribution patterns that may support future flood management planning and spatial analysis studies. However, the study does not assess hydraulic performance, structural adequacy, or the actual flood reduction effectiveness of the flood control projects.
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