Deltas are perhaps the most complex coastal systems that are also home to concentrated human settlements of half a billion people worldwide. Deltas are subject to various stressors from climate change, agriculture, energy transition, urban development and resource extraction. These stressors manifest themselves in a variety of biophysical hazards (erosion, saltwater intrusion, subsidence and elevation loss, ecosystem decline, changes in flood and drought patterns, water resources decline, etc.) leading to cascading environmental and socioeconomic impacts. Developing a solution space for adaptation in these complex fluvial and coastal systems requires qualitative and quantitative understanding of these various interacting forces in surface and subsurface, in the subaerial and subaqueous delta systems. The impact chains and interplay of these stressors varies greatly between deltas and across scales. This session targets researchers from various disciplines, as well as interdisciplinary and policy-relevant studies that address the interlinkages between drivers and impacts towards sustainable nature-based adaptation strategies. Our objective is to invite researchers from various disciplines that study deltas worldwide, and especially encourage multi-disciplinary studies that aim to provide an integrated perspective on environmental challenges in deltas and low-lying coastal areas.