This book comprises proceedings of the 28th International Conference on Hydraulics, Water Resources, River and Coastal Engineering (HYDRO 2023). It focuses on emerging opportunities and challenges in the field of hydrology and hydrological modelling. The book covers a range of topics including, but not limited to, groundwater modelling and management, integrated water resources and watershed management, surface water hydrology, drought assessment and mitigation, risk, reliability and design of hydrologic systems. The book presents these topics in the form of illustrations and tables, thereby providing the readers with an in-depth insight into the recent research. It also addresses fundamental concepts and studies in the field of hydrology and hydrological modelling, making it a valuable resource for researchers and professionals working in the fields of hydraulics, water resources and coastal engineering.