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Review

Groundwater Impacts and Management under a Drying Climate in Southern Australia

1
Grounded in Water, Adelaide, SA 5064, Australia
2
CSIRO Land and Water, Adelaide, SA 5064, Australia
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CSIRO Land and Water, Canberra, ACT 2601, Australia
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Jacobs, Melbourne, VIC 3000, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Andrzej Wıtkowskı
Water 2021, 13(24), 3588; https://doi.org/10.3390/w13243588
Received: 12 November 2021 / Revised: 8 December 2021 / Accepted: 8 December 2021 / Published: 14 December 2021
(This article belongs to the Special Issue Integrated Water Assessment and Management under Climate Change)
The trend to a hotter and drier climate, with more extended droughts, has been observed in recent decades in southern Australia and is projected to continue under climate change. This paper reviews studies on the projected impacts of climate change on groundwater and associated environmental assets in southern Australia, and describes groundwater planning frameworks and management responses. High-risk areas are spatially patchy due to highly saline groundwater or low-transmissivity aquifers. The proportional reduction in rainfall is amplified in the groundwater recharge and some groundwater discharge fluxes. This leads to issues of deteriorating groundwater-dependent ecosystems, streamflow depletion, reduced submarine discharge, groundwater inundation and intrusion in coastal regions and reduced groundwater supply for extraction. Recent water reforms in Australia support the mitigation of these impacts, but groundwater adaptation is still at its infancy. Risk management is being incorporated in regional water and groundwater management plans to support a shift to a more sustainable level of use and more climate-resilient water resources in affected areas. The emerging strategies of groundwater trade and managed aquifer recharge are described, as is the need for a national water-focused climate change planning process. View Full-Text
Keywords: climate change; groundwater supply and use; environmental impact; groundwater planning; uncertainty and risk; adaptive management climate change; groundwater supply and use; environmental impact; groundwater planning; uncertainty and risk; adaptive management
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MDPI and ACS Style

Walker, G.R.; Crosbie, R.S.; Chiew, F.H.S.; Peeters, L.; Evans, R. Groundwater Impacts and Management under a Drying Climate in Southern Australia. Water 2021, 13, 3588. https://doi.org/10.3390/w13243588

AMA Style

Walker GR, Crosbie RS, Chiew FHS, Peeters L, Evans R. Groundwater Impacts and Management under a Drying Climate in Southern Australia. Water. 2021; 13(24):3588. https://doi.org/10.3390/w13243588

Chicago/Turabian Style

Walker, Glen R., Russell S. Crosbie, Francis H.S. Chiew, Luk Peeters, and Rick Evans. 2021. "Groundwater Impacts and Management under a Drying Climate in Southern Australia" Water 13, no. 24: 3588. https://doi.org/10.3390/w13243588

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