Overview Processes controlling sediment initiation, transport, and deposition in watersheds are complex both in space and over time. Understanding the complexity of these processes at different spatial and temporal scales require collecting and analyzing data with different levels of detail, which may be achieved by using a variety of field, experimental, and modeling approaches, possibly combined with advanced technologies such as remote sensing, sediment tracing and dating, and unmanned aerial vehicle. New ideas and concepts around these approaches often arise…