This report shows that freshwater conservation issues must be at the heart of the climate agenda and efforts to achieve Sustainable Development Goal (SDG) 13. While freshwater is a major conduit through which climate impacts are felt, it can also play a central role in climate adaptation and resilience-building for people, economies and nature. Managing water carefully through nature-based solutions is a crucial element in tackling the most serious global climate risks. Climate change makes the water challenges we face more severe. However, at the same time, freshwater is the lever through which we can help mitigate climate risks. Sound water policies, practices, investments and governance that recognize the full value of functioning and healthy freshwater systems will make us more climate-resilient. Water is the sector where most climate impacts are felt and where climate resilience must be developed (Introduction).