Jeffrey J. McDonnell is Professor of Hydrology and Associate Director of the Global Institute for Water Security at the University of Saskatchewan (Canada). He was previously Richardson Chair in Watershed Science and University Distinguished Professor at Oregon State University. He holds the title of 6th Century Chair in Hydrology at the University of Aberdeen and is Honorary Professor at the Nanjing Hydraulic Research Institute. He has a BSc from the University of Toronto, MSc from Trent University and PhD and DSc from the University of Canterbury, where he studied as a Commonwealth Scholar. His work focuses on new ways to measure, understand and model streamflow generation processes. Jeff has co-authored ~250 articles on watershed hydrology and co-edited the Elsevier textbook “Isotope Tracers in Catchment Hydrology”. He is Fellow of the Royal Society of Canada (Canada’s National Academy of Science), and a Fellow of the Geological Society of America, the American Geophysical Union, the International Water Academy and the Royal Geographical Society (UK). He has received the Dalton Medal from the European Geophysical Union, the Birdsall-Dreiss Distinguished Lecturer Award from the Geological Society of America, the Gordon Warwick Award from the British Geomorphological Research Group and the Nystrom Award from the Association of American Geographers. He is currently President-Elect of the AGU Hydrology Section.