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A Global Assessment of the Limits of Groundwater Use

Project description

Sustainable management of groundwater

Groundwater is the most extracted raw material. Rising rates of groundwater pumping and associated high rates of aquifer depletion worldwide are a major concern. The depletion of the world’s aquifers is unsustainable and will eventually be felt in food security of future generations. In this context, the ERC-funded GEOWAT project will seek to determine how much groundwater is there and how long it will last. Specifically, it will build the first high-resolution global groundwater model supported with a 3D mapping of the world’s aquifers. Modelling tools, in combination with dedicated case studies, will be used to study the global volume of physically and economically extractable fresh groundwater and determine the time to physical and economic depletion under future pumping. The project’s overall aim is to provide new knowledge for sustainable groundwater use.

Objective

Population growth and economic development have dramatically increased the demand for food and water. The resulting expansion of agriculture into areas with limited precipitation and surface water has greatly increased the reliance on groundwater irrigation. Further, urban groundwater use has risen exponentially to meet the ever-increasing population growth of mega-cities. These trends have resulted in a dramatic rise in groundwater pumping and associated high rates of aquifer depletion around the globe. The depletion of our world’s aquifers is unsustainable and will eventually impact the food security of future generations. Also, groundwater depletion results in severe environmental impacts such as land subsidence, groundwater salinisation, and damage to groundwater-dependent ecosystems. Despite decades of research on groundwater overuse, knowledge on attainable groundwater reserves and the critical time horizons of their depletion is completely lacking. In GEOWAT, I propose to take the giant leap to extractable volumes and depletion horizons by answering the obvious question that has been avoided thus far: How much groundwater is there and how long will it last? To this end, my research team will build the first high-resolution global groundwater model supported with a 3D-mapping of the world’s aquifers. We will use these unique modelling tools, in combination with dedicated case studies, to assess, for the first time, the global volume of physically and economically extractable fresh groundwater, and determine the time to physical and economic depletion under future pumping. We will also provide the first global assessment of the effects of groundwater pumping on groundwater-dependent ecosystems and explore pathways to sustainable groundwater use. As such, GEOWAT will provide critically-needed new knowledge to address one of most pressing challenges that mankind will face: how to sustainably manage the freshwater resources needed to survive on this planet?

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

ERC-ADG - Advanced Grant

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Call for proposal

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(opens in new window) ERC-2020-ADG

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Host institution

UNIVERSITEIT UTRECHT
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 500 000,00
Address
HEIDELBERGLAAN 8
3584 CS Utrecht
Netherlands

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Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 500 000,00

Beneficiaries (1)

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