The document describes a study that used HEC-HMS and HEC-RAS models to generate flood hazard maps of the Bued-Angalacan River basin in the Philippines. Key steps included developing a basin model with sub-basins and reaches, calibrating the HEC-HMS model using rainfall and discharge data, and generating 1D flood maps for 5 to 100 year rainfall events. The maps showed increasing flood risk with higher return periods, with most impacts in the town of San Fabian. The study aims to provide information for flood preparation and damage estimation.