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Water 2014, 6(9), 2748-2769; doi:10.3390/w6092748

Assessing the Feasibility of Managed Aquifer Recharge for Irrigation under Uncertainty

1
National Centre for Groundwater Research and Training and The Fenner School of Environment and Society, Integrated Catchment Assessment and Management Centre (iCAM), building 48a, Linnaeus Way, The Australian National University, Canberra, ACT 0200, Australia
2
Water & Development Research Group (WDRG), Aalto University, Tietotie 1E, Espoo 02150, Finland
3
Groundwater Section, Division of Water Sciences, UNESCO, 1 Rue Miollis, Paris, Cedex 75732, France
*
Author to whom correspondence should be addressed.
Received: 13 June 2014 / Revised: 5 September 2014 / Accepted: 5 September 2014 / Published: 16 September 2014
(This article belongs to the Special Issue Policy and Economics of Managed Aquifer Recharge and Water Banking)
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Abstract

Additional storage of water is a potential option to meet future water supply goals. Financial comparisons are needed to improve decision making about whether to store water in surface reservoirs or below ground, using managed aquifer recharge (MAR). In some places, the results of cost-benefit analysis show that MAR is financially superior to surface storage. However, uncertainty often exists as to whether MAR systems will remain operationally effective and profitable in the future, because the profitability of MAR is dependent on many uncertain technical and financial variables. This paper introduces a method to assess the financial feasibility of MAR under uncertainty. We assess such uncertainties by identification of cross-over points in break-even analysis. Cross-over points are the thresholds where MAR and surface storage have equal financial returns. Such thresholds can be interpreted as a set of minimum requirements beyond which an investment in MAR may no longer be worthwhile. Checking that these thresholds are satisfied can improve confidence in decision making. Our suggested approach can also be used to identify areas that may not be suitable for MAR, thereby avoiding expensive hydrogeological and geophysical investigations. View Full-Text
Keywords: managed aquifer recharge; feasibility; cost-benefit analysis; break-even analysis; uncertainty managed aquifer recharge; feasibility; cost-benefit analysis; break-even analysis; uncertainty
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Arshad, M.; Guillaume, J.H.; Ross, A. Assessing the Feasibility of Managed Aquifer Recharge for Irrigation under Uncertainty. Water 2014, 6, 2748-2769.

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