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Current Practice and Future Challenges in Coastal Aquifer Management: Flux-Based and Trigger-Level Approaches with Application to an Australian Case Study

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  • Adrian Werner
  • Darren Alcoe
  • Carlos Ordens
  • John Hutson
  • James Ward
  • Craig Simmons

Abstract

The control of groundwater abstraction from coastal aquifers is typically aimed at minimizing the risk of seawater intrusion, excessive storage depletion and adverse impacts on groundwater-dependent ecosystems. Published approaches to the operational management of groundwater abstraction from regulated coastal aquifers comprise elements of “trigger-level management” and “flux-based management”. Trigger-level management relies on measured groundwater levels, groundwater salinities and/or ecosystem health indicators, which are compared to objective values (trigger levels), thereby invoking management responses (e.g. pumping cut-backs). Flux-based management apportions groundwater abstraction rates based on estimates of aquifer recharge and discharge (including environmental water requirements). This paper offers a critical evaluation of coastal aquifer management paradigms using published coastal aquifer case studies combined with a simple evaluation of the Uley South coastal aquifer, South Australia. There is evidence that trigger-level management offers advantages over flux-based approaches through the evaluation of real-time resource conditions and trends, allowing for management responses aimed at protecting against water quality deterioration and excessive storage depletion. However, flux-based approaches are critical for planning purposes, and are required to predict aquifer responses to climatic and pumping stresses. A simplified modelling analysis of the Uley South basin responses to different management strategies demonstrates the advantages of considering a hybrid management approach that includes both trigger-level and flux-based controls. It is recommended that where possible, trigger-level and flux-based approaches be adopted conjunctively to minimize the risk of coastal groundwater degradation and to underpin strategies for future aquifer management and well-field operation. Copyright Springer Science+Business Media B.V. 2011

Suggested Citation

  • Adrian Werner & Darren Alcoe & Carlos Ordens & John Hutson & James Ward & Craig Simmons, 2011. "Current Practice and Future Challenges in Coastal Aquifer Management: Flux-Based and Trigger-Level Approaches with Application to an Australian Case Study," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(7), pages 1831-1853, May.
    • Handle: RePEc:spr:waterr:v:25:y:2011:i:7:p:1831-1853
    DOI: 10.1007/s11269-011-9777-2
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    References listed on IDEAS

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    1. Zekri, Slim, 2008. "Using economic incentives and regulations to reduce seawater intrusion in the Batinah coastal area of Oman," Agricultural Water Management, Elsevier, vol. 95(3), pages 243-252, March.
    2. Don, Nguyen Cao & Hang, Nguyen Thi Minh & Araki, Hiroyuki & Yamanishi, Hiroyuki & Koga, Kenichi, 2006. "Groundwater resources and management for paddy field irrigation and associated environmental problems in an alluvial coastal lowland plain," Agricultural Water Management, Elsevier, vol. 84(3), pages 295-304, August.
    3. Gabor Bekesi & Megan McGuire & Dean Moiler, 2009. "Groundwater Allocation Using a Groundwater Level Response Management Method—Gnangara Groundwater System, Western Australia," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(9), pages 1665-1683, July.
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    Cited by:

    1. Pallavi Chattopadhyay & Nimisha Vedanti & V. Singh, 2015. "A Conceptual Numerical Model to Simulate Aquifer Parameters," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(3), pages 771-784, February.
    2. Concepcion Pla & Javier Valdes-Abellan & Antonio Jose Tenza-Abril & David Benavente, 2016. "Predicting Daily Water Table Fluctuations in Karstic Aquifers from GIS-Based Modelling, Climatic Settings and Extraction Wells," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(7), pages 2531-2545, May.
    3. K. Mazi & A. D. Koussis & G. Destouni, 2016. "Quantifying a Sustainable Management Space for Human Use of Coastal Groundwater under Multiple Change Pressures," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(12), pages 4063-4080, September.
    4. Mohsen Sherif & Anvar Kacimov & Akbar Javadi & Abdel Ebraheem, 2012. "Modeling Groundwater Flow and Seawater Intrusion in the Coastal Aquifer of Wadi Ham, UAE," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(3), pages 751-774, February.
    5. I. Holman & K. Rushton & T. Simpson, 2013. "The Benefits of Spatially Targeted Water Level Management for Salinity Reduction in a Coastal Aquifer," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(1), pages 169-186, January.

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