Gabriel Eckstein is the Principal of International H2O Solutions. He is a recognized expert in water and environmental law and policy at both the US and international levels. Mr. Eckstein has served as an expert advisor and consultant on US and international environmental and water law and policy issues to various governments, organizations and programs, including the World Bank, the U.N. Educational, Scientific, and Cultural Organization's International Hydrological Programme (UNESCO-IHP), the U.N. International Law Commission (UNILC), the United Nations Environment Programme (UNEP), the U.N. Food and Agriculture Organization (UNFAO), the US Agency for International Development (USAID), World Commission on Dams, Organization of American States (OAS), the UNESCO/OAS ISARM Americas Programme, and various local water entities in the United States. He also served as legal counsel and advocate for the Government of Bolivia in the Case Concerning the Dispute Over the Status and Use of the Waters of the Silala (Chile v. Bolivia) before the International Court of Justice.

Mr. Eckstein is a professor of law at Texas A&M University School of Law where he teaches courses on US and international water, environmental, and natural resources law. At the university, he also holds affiliations with the University's Water Management and Hydrological Science Program, Energy Institute, Bush School of Government and Public Service, Public Service and Administration Department, Institute for Science, Technology and Public Policy at The Bush School of Government and Public Service; and Center for Health Systems & Design, College of Architecture. Prior to joining Texas A&M University, Professor Eckstein held the George W. McCleskey Chair in Water Law at Texas Tech University where he also directed the Texas Tech University Center for Water Law & Policy. Mr. Eckstein also directs the Internet-based International Water Law Project, is the President and former Treasurer of the International Water Resources Association, and is on the Executive Council of the International Water Law Association.

Professor Eckstein holds LL.M. and JD degrees from American University's Washington College of Law, M.S. in International Affairs from Florida State University, and a B.S. in Geology from Kent State University. He is admitted to the bars of New York, West Virginia, and the District of Columbia.