Study: Third of Big Groundwater Basins in Distress

Groundwater storage trends for Earth's 37 largest aquifers from UCI-led study using NASA GRACE data (2003-2013). Of these, 21 have exceeded sustainability tipping points and are being depleted, with 13 considered significantly distressed, threatening regional water security and resilience.

http://photojournal.jpl.nasa.gov/catalog/PIA19685