water scarcity

40 Million Americans Depend On The Colorado River. That Could Be A Problem.

The Colorado River now carries about 20% less water than it did a century ago. The Colorado originates in the Rocky Mountains, where it is fed by melting snow. Due to the changes in weather patterns attributable to a heating planet, not as much snow falls in those mountains today as in prior years. Less snow means the land in the upper elevations is warmed by the sun where previously the snow cover would reflect sunlight back into space, making the area hotter, which means that whatever snow falls melts sooner.

Fossil Water Depletion, Groundwater Contamination, Saltwater Intrusion, & Permanent Subsidence — The Great Freshwater Depletion…

As these fossil water reserves are depleted, there is often nothing to replace them (the one notable exception being the possibility of desalination in some regions), with the eventuality often being large populations, industrial infrastructure, and farmland that is untenable in the regions in question, to be followed by mass migrations out of such regions.