Aquifer Depletion

Data from the GRACE satellites over the period 2003 to 2013 show that 13 of the world's 37 major aquifers are being rapidly depleted.

Update (June 18):  The California Central Valley isn't among the overstressed aquifers, but it could be depleted within decades.

Update (July 25):  Lindsay Wise reports on the Ogallala Aquifer in the Great Plains.

Update (July 27, 2019):  A freshwater aquifer has been discovered under the Atlantic Ocean.