The Arabian Aquifer System, a key water source for 60 million people in Saudi Arabia, Iraq, Qatar, Syria and other countries is the world's most overstressed, the research said. Full paper: Uncertainty in global groundwater storage estimates in a total groundwater stress frameworkĪquifers become stressed when too much water is taken out for household, agricultural and industrial use, and not enough surface water seeps in to replenish the underground rock formations.Full paper: Quantifying renewable groundwater stress with GRACE.
Human water use is sucking dry around a third of the world's largest underground water basins at an alarming rate, with potentially risky consequences for farmers and other consumers, researchers said.Įight of the planet's 37 biggest aquifers are classified as "overstressed" because they have almost no new water flowing in to offset usage, according to two studies from the University of California based on NASA satellite data.Īnother five aquifers are classified as "highly stressed", meaning some water is flowing back into them but they are still in trouble, said the studies published in the journal Water Resources Research this week.
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