Climate is a fundamental driver of the water cycle. It determines how much water is available (supply) and how much water we need (demand) in the short and long term. Global and regional climate changes and variability influence the long-term patterns of hydro-climatic variables. Frequent droughts, floods and more severe extreme climatic events have also been observed during the last few years. Studies have demonstrated that the extreme climatic events (like heatwaves, extreme rainfall events, etc.) are becoming more severe and frequent. However, these changes have not been either spatially or temporally uniform. Climate change effects observational and historical hydro-climatic data, which are generally used for planning and design of water resources projects. This session invites papers that study the trends in hydro-climatic variables, especially in relation to extreme climatic events.