David Freyberg is an Emeritus Associate Professor in the Department of Civil and Environmental Engineering at Stanford University. He specializes in hydrology and water resources. His research interests include reservoir sedimentation, surface water-groundwater interactions, and collaborative governance in transnational water resources. Freyberg's work encompasses the design and scaling of recycled water systems and understanding hydrologic ecosystem services in urban areas. His academic journey includes a PhD from Stanford University in 1981. Freyberg has received several honors throughout his career, such as the Community Service Award from the Consortium Universities for the Advancement of Hydrologic Science, Inc., and the Eugene Grant Award for Excellence in Teaching. He played a significant role in academic governance and was involved in various committees and programs focused on hydrology and environmental engineering. His teaching has included a range of courses at Stanford, promoting the understanding of water resource management and environmental sustainability.