He is Coordinator of the UNESCO-International Hydrologic Program called Groundwater Resources Assessment under the Pressure of Humanity and Climate Change (GRAPHIC). GRAPHIC is a global-scale research, education, and outreach program that addresses climate change and sustainability of global groundwater resources. Prior to joining SFSU, he was a Hydrologist for 11 years with the USGS. Dr. Gurdak has authored more than 50 publications in hydrology, including topics on the science and policy of climate change impacts and adaptation of groundwater resources.