The study presented in this report aimsto increase our understanding of the global distribution oftreaty and River Basin Organization (RBO) mechanisms thatmay confer resilience to variability in the hydrologicalregime and how that distribution aligns with current andanticipated regimes. Some basins will experience greaterchanges in hydrologic variability regimes than others, andwe specifically seek to identify country-basin combinationswith greater exposure to variability and few or notreaty/RBO provisions to manage the transboundary impacts ofthat variability. To do this, we assessed all availableinternational water treaties for specific treaty mechanisms,mapped the spatial distribution of these mechanisms andRBOs, and compared it to both the current variability regimeand projections of future variability regimes driven byclimate change. We then identified specific basins that maymerit further study in light of their potential risk offuture hydropolitical stress. By identifying these areas atthe global scale, we can contribute to efforts aimed atanticipating future challenges in transboundary watermanagement and suggesting specific measures to adaptexisting or new water agreements to the effects of climate change.