Many of Earth’s groundwater basins run deficits
Consumption exceeds replenishment for majority of largest aquifers
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/06/ts_groundwater_map_free.jpg?fit=860%2C460&ssl=1)
DRYING OUT Twenty-one of Earth’s 37 largest aquifers are dwindling, satellite data show. Redder regions represent overstressed aquifers that lose more water each year than they take in.
UC Irvine, NASA