Forests dominate much of Canada's landscape and are a critical source of freshwater resources, provide natural infrastructure for flood protection and drinking water supply, and support habitat for culturally and economically important aquatic species. Forest ecosystems are undergoing unprecedented change due to climate variability and disturbances such as wildfire, resource extraction, and urbanization. Novel insights on forest-water relationships from plot to watershed scales are needed to inform effective management approaches. We invite both empirical and modelling studies and contributions that provide new understanding and perspectives on ecohydrological and biogeochemical processes within forested ecosystems, such as evapotranspiration, streamflow generation, and water quality.