One-Third Of The World's Largest Groundwater Sources Are In Serious Trouble: Study

The Huffington Post, June 17, 2015, By Hilary Hanson

"The earth's biggest groundwater basins are being depleted far more quickly than previously believed, according to two new studies by the University of California, Irvine (UCI).

The studies used data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites gathered between 2003 and 2013 to examine the 37 largest aquifers on the planet. Twenty-one of those aquifers have exceeded their sustainability 'tipping points,' meaning they lose more water every year than is being naturally replenished through processes like rainfall or snow melt, said Jay Famiglietti, senior water scientist at NASA Jet Propulsion Laboratory and principal investigator in the two studies.

Out of those 21, eight were found to be 'overstressed,' meaning there is 'nearly no natural replenishment' to restore water used by humans, according to a statement from UCI. Another five were designated 'extremely or highly stressed,' signifying that they are "still in trouble" but have "some water flowing back into them.' ..."

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