Analysis of Water Quantity and Quality Trade-Offs to Inform Selective Harvesting of Inflows in Complex Water Resource Systems

Sayani Dey (), Andrew Barton, Harpreet Kandra, Adil Bagirov and Kym Wilson
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Sayani Dey: Federation University
Andrew Barton: Federation University
Harpreet Kandra: Federation University
Adil Bagirov: Federation University
Kym Wilson: Grampians Wimmera Mallee Water Corporation

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2021, vol. 35, issue 12, No 14, 4149-4165

Abstract: Abstract Challenges faced by water resource systems are multi-faceted. The problem can be even more pronounced in a dry continent like Australia where the water resources can often be afflicted by high salinity and turbidity. Therefore, modern water resource systems require to appropriately manage both water quality and quantity. This study aims to illustrate the trade-offs between water quantity and quality in a reservoir, based on decisions to harvest different inflow sources. Taylors Lake of the Grampians reservoir system in Western Victoria, Australia was chosen as the case study for this research as it is sufficiently complex and includes many of the contemporary water resources challenges seen around the world. Different operational scenarios were analysed which included increasingly stringent water quality criteria before the water was harvested or otherwise allowed to by-pass the storage. The study suggests that selective harvesting of water can be an option to improve the overall and long-term water quality within a reservoir, but stringent water quality measures can lead to an associated loss of overall water quantity. This research study provides useful insight to water planners and stakeholders in similar catchment settings around the world, to identify water harvesting regimes with competing water quality constraints.

Keywords: Reservoir system; Water quality; Trade-off; Water resources; Water operations (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s11269-021-02936-x

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