Rosario Sanchez, PhD is a Senior Research Scientist at the Texas Water Resources Institute at Texas A&M University and Associate Graduate Faculty of the Water Management and Hydrological Sciences Program. She is Co-Chair of the Transboundary Aquifers Commission of the International Association of Hydrogeologists and Director of the Permanent Forum of Binational Waters and she leads the transboundary groundwater research team with 15 years of academic and work experience on transboundary issues between Mexico and the United States. She is an expert on waters that cross international boundaries and are shared by two or more countries.