Changes in climate, economic development, urbanization, and population growth will impact water availability around the world. To prepare for these changes, decision-makers need to consider future scenarios of global water supply and demand. Investors, policymakers, companies, and development organizations can use such projected estimates to quantify future impact, hedge risks, and adapt to changes at relevant scales. For certain decisions and analysis, the national scale may be important, and to the best of our knowledge, no up-to-date, country-level projections currently…