See the following New York Time Magazine Article By Noah Gallagher Shannon (July 19, 2018)
The Water Wars of Arizona
“Until the last three decades, the technology to make detailed maps of these underground waterways did not readily exist. It wasn’t until 2015, in fact, that NASA published its first comprehensive study of global groundwater reserves. The mission began in 2002, with the launch of the Gravity Recovery and Climate Experiment (Grace), two satellites that follow each other in orbit, measuring changes in gravitational pull. The mission’s primary purpose was to look at ice-sheet depletion, but over the next several years Dr. Jay Famiglietti, the senior water scientist at NASA’s Jet Propulsion Laboratory, and his team noticed that many of the most significant sites of water loss were actually below ground. Of the planet’s 37 major aquifer systems, they discovered, 21 were on the verge of collapse. In the Great Plains, farmers had exhausted a third of Ogallala’s potable water in just 30 years. In California, the Central Valley aquifer was showing signs that it could drop beyond human reach by the middle of this century. But the worst declines were in Asia and the Middle East, where some of the planet’s oldest aquifers were already running out of water. “While we are so busy worrying about the water that we can see,” Famiglietti told me, “the water that we can’t see, the groundwater, is quietly disappearing.”
Want more? Read 6 Degrees by Mark Lynas
None of this information is new, and the impact is neither hypothetical or in the future, it is real and now. We are waking slowly and in the time it takes to act, we may find we are already too late.