Globally, changing water supply and demand is inevitable; what that change will look like is far from certain. A first-of-its-kind analysis sheds new light on the issue.
Decision-makers need future projections on water supply and demand. However, most of these decision-makers operate at the administrative or political scales, and therefore require country-level projections.
This technical note utilized a spatial aggregation methodology to bring sub-...
Many of the world's biggest aquifers are being depleted much faster than they can be replenished, from the Middle East to India to California. New NASA satellite data reveals a looming global groundwater crisis.
The Aqueduct Water Stress Projections include indicators of change in water supply, water demand, water stress, and seasonal variability, projected for the coming decades under scenarios of climate and economic growth.
In certain areas of the world, more than 80 percent of the local water supply is withdrawn by businesses, farmers, residents and other consumers every year. These areas are particularly vulnerable to episodic drought.
Snow-capped mountain ranges no longer have snow. Citizens fear they'll lose access to water. And farmers continue to draw scarce groundwater.
So what can California do to shore up its dwindling water supply?
Constructing Decision-Relevant Global Water Risk Indicators
This working paper explains the methodology used to generate the hydrological metrics and indicators in the Aqueduct Water Risk Atlas. For a detailed list of data sources, see the Aqueduct Global Maps 2.1 Metadata Document.
Many places around the world have no idea how much groundwater and surface water they have, let alone how much they can use sustainably. The United Nation's proposed Sustainable Development Goals, however, could transform the way governments understand and manage scarce water resources.
Companies are realizing that managing water within their four walls is insufficient. Only coordinated, collective action can protect water resources and mitigate long-term business risks.