Dynamic attribution of global water demand to surface water and groundwater resources: Effects of abstractions and return flows on river discharges

I. E.M. De Graaf, L. P.H. van Beek, Y. Wada, M. F.P. Bierkens

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

As human water demand is increasing worldwide, pressure on available water resources grows and their sustainable exploitation is at risk. To mimic changes in exploitation intensity and the connecting feedbacks between surface water and groundwater systems, a dynamic attribution of demand to water resources is necessary. However, current global-scale hydrological models lack the ability to do so. This study explores the dynamic attribution of water demand to simulated water availability. It accounts for essential feedbacks, such as return flows of unconsumed water and riverbed infiltration. Results show that abstractions and feedbacks strongly affect water allocation over time, particularly in irrigated areas. Also residence time of water is affected, as shown by changes in low flow magnitude, frequency, and timing. The dynamic representation of abstractions and feedbacks makes the model a suitable tool for assessing spatial and temporal impacts of changing global water demand on hydrology and water resources. © 2013 Elsevier Ltd.
Original languageEnglish (US)
Pages (from-to)21-33
Number of pages13
JournalAdvances in Water Resources
Volume64
DOIs
StatePublished - Feb 1 2014
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-18

ASJC Scopus subject areas

  • Water Science and Technology

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