In Indonesia, the transdisciplinary approach commenced its implementation in assessing water flood susceptibility and community flood resilience. As an evolving paradigm, accumulating field experience is imperative to augment the insights of stakeholders engaged in flood risk management endeavours. This study explores implementing a transdisciplinary approach in flood risk management based on field practices in Indonesia. River basin flood susceptibility was assessed using a participatory geospatial method on land cover data from 2001 to 2021. Moreover, households and leaders were surveyed and interviewed to examine community flood resilience. The findings suggest that a transdisciplinary approach incorporating local knowledge and participatory research can enhance geospatial flood susceptibility analysis and modelling. This approach fosters local wisdom and understanding of flood risks, which can help build a more resilient and prepared population in these vulnerable areas. This study also revealed that a transdisciplinary approach can help stakeholders understand river basin flood susceptibility and improve various aspects of flood risk management, such as structural mitigation measures, social capital, risk perception, communication and information, and institutional collaboration, ultimately enhancing flood resilience. By implementing these strategies, planners and authorities can address flood risks and expedite the achievement of Sustainable Development Goal 11 for inclusive, safe, resilient and sustainable cities.