Unsustainable water withdrawals for irrigation
The imbalance in long-term water budgets necessitates diversion of surface water or the tapping of groundwater resources. The areas shown with moderate-to-high levels of unsustainable use occur over each continent and are known to be areas of aquifer mining or major water transfer schemes.
Year: 2007
From collection: Millennium Ecosystem Assessment
Cartographer: Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal