Aquifers
Groundwater systems, their extent, recharge and status.
The aquifer underlying the American High Plains, and the clearest large-scale example of groundwater mining: withdrawal has substantially exceeded recharge for decades, and parts of it wil…
The most heavily abstracted aquifer system in the world, supporting the agriculture of northern India, Pakistan, Nepal and Bangladesh, and simultaneously the site of the largest arsenic ex…
The dominant groundwater resource of southern and eastern England, supplying a large share of public water in the region and feeding the chalk streams that are among the rarest freshwater …
The largest known fossil groundwater system in the world, underlying Egypt, Libya, Sudan and Chad. Its water is tens of thousands of years old and is not being replenished.
One of the largest transboundary aquifer systems in the world, shared by Brazil, Argentina, Paraguay and Uruguay, and the subject of a formal cooperation agreement between them.
- Area
- approximately 1.2 million km²
- Countries
- 4
- Estimated storage
- on the order of 30,000 km³