David Rudolph, Ph.D., P.Eng., is a Professor and Chair in the Department of Earth and Environmental Sciences at the University of Waterloo. He specializes and teaches in the areas of regional hydrogeology and groundwater protection and management. His research group combines watershed-scale field monitoring with numerical modeling strategies to resolve issues related to water balances, impacts of diffuse source contaminants and groundwater-surface water interaction phenomena. He served as founding Executive Director of the Water Institute at the University of Waterloo, was the 2010 recipient of NGWA’s M. King Hubbert Award for contributions to the field of hydrogeology and the 2013 NGWA Darcy Lecturer in Ground Water Science.