Please use this identifier to cite or link to this item: https://doi.org/10.1029/2019EF001363
Title: Capping Human Water Footprints in the World's River Basins
Authors: Hogeboom, R.
de Bruin, D.
Schyns, J.F.
Krol, M.
Hoekstra, A.Y. 
Keywords: environmental flow requirements
Global Hydrology Models
planetary boundaries
water availability
water footprint caps
water scarcity
Issue Date: 2020
Publisher: John Wiley and Sons Inc
Citation: Hogeboom, R., de Bruin, D., Schyns, J.F., Krol, M., Hoekstra, A.Y. (2020). Capping Human Water Footprints in the World's River Basins. Earth's Future 8 (2) : e2019EF001363. ScholarBank@NUS Repository. https://doi.org/10.1029/2019EF001363
Rights: Attribution 4.0 International
Abstract: Increased water demand and overexploitation of limited freshwater resources lead to water scarcity, economic downturn, and conflicts over water in many places around the world. A sensible policy measure to bridle humanity's water footprint, then, is to set local and time-specific water footprint caps, to ensure that water appropriation for human uses remains within ecological boundaries. This study estimates—for all river basins in the world—monthly blue water flows that can be allocated to human uses, while explicitly earmarking water for nature. Addressing some implications of temporal variability, we quantify trade-offs between potentially violating environmental flow requirements versus underutilizing available flow—a trade-off that is particularly pronounced in basins with a high seasonal and interannual variability. We discuss several limitations and challenges that need to be overcome if setting water footprint caps is to become a practically applicable policy instrument, including the need (for policy makers) to reach agreement on which specific capping procedure to follow. We conclude by relating local and time-specific water footprint caps to the planetary boundary for freshwater use. © 2020 The Authors.
Source Title: Earth's Future
URI: https://scholarbank.nus.edu.sg/handle/10635/198114
ISSN: 2328-4277
DOI: 10.1029/2019EF001363
Rights: Attribution 4.0 International
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