The application of geospatial analysis in water-related disaster management presents a vital component in the context of smart cities and sustainable development. This article examines the multifaceted utilization of geospatial approaches in understanding, forecasting, and responding to water-related disasters within the framework of smart urban planning and sustainable development. By integrating geographical information system (GIS), remote sensing, and spatial analysis, this article explores how geospatial data can inform decision-making processes to enhance resilience, mitigate risks, and foster sustainable water management practices in urban areas. Through case studies and examples, the article illustrates the synergy between geospatial analysis and smart city initiatives, emphasizing the role of real-time monitoring, predictive modelling, and data-driven interventions in building adaptive urban ecosystems resilient to water-related disasters. Moreover, it highlights the importance of incorporating geospatial analysis into the broader discourse of sustainable development to promote equitable access to water resources, safeguard environmental integrity, and foster inclusive growth in rapidly urbanizing contexts.