"However, **we must be concerned about the future of the water supply**. Many regional, national, and global models have examined future water availability. They assume different degrees of global warming, and while the worst-case scenarios offer a generally deteriorating outlook, there are substantial uncertainties depending on necessary assumptions about population growth and therefore water demand. **With a warming of up to 2ºC, populations exposed to increased, climate change–induced water scarcity may be as low as 500 million and as high as 3.1 billion**. Per capita water supply will be decreasing worldwide, but some major river basins (including [[La Plata]], the [[Mississippi]], [[Danube]], and [[Ganges]]) will remain well above the scarcity level, while some already water-scarce river basins will see further deterioration (perhaps most notably [[Turkey]] and [[Iraq]]’s [[Tigris-Euphrates]] and [[China]]’s [[Huang He]])." ([Location 3606](https://readwise.io/to_kindle?action=open&asin=B08SGC3TD3&location=3606)) --- **Tags** -- [[quotes]], [[water-security]], [[climate-change]], **Source** -- [[202412030828 - B - How the World Really Works]]