Principles to coordinate managed aquifer recharge with natural resource management policies in Australia |
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| Authors: | John Ward Peter Dillon |
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| Institution: | 1. CSIRO Water for a Healthy Country National Research Flagship, CSIRO Ecosystem Sciences, Ecoscience Precinct, Boggo Rd, Dutton Park, 4102, Queensland, Australia
2. CSIRO Water for a Healthy Country National Research Flagship, CSIRO Land and Water PMB2, Glen Osmond, SA, 5064, Australia
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| Abstract: | Managed aquifer recharge (MAR) is a tool available to water-resources managers that assists agencies to secure water supplies and protect aquifers and groundwater-dependent ecosystems in the face of climate change and growing water demand. Yet few natural-resources managers have access to a coordinated set of policies that enable the potential benefits of MAR to be fully realised in urban and rural areas. This paper reviews contemporary Australian water-resource policies and systematically applies a refined set of ‘robust separation of rights’ principles based on secure entitlements, annual allocations and end-use obligations to guide the coordination of policies specific to each of the four operational processes central to MAR schemes: source water harvesting, aquifer recharge, recovery of stored water and end use. Particular attention is given to the formulation of policies relating to the recovery of water, including the feasibility for market exchange of permanent and temporary rights to recover recharged water, as these have the potential to greatly expand the role of MAR. Aquifer characteristics, existing groundwater extractions and potential third party effects need to be taken into account in determining both recovery entitlements and annual allocations. A transitional pathway to implement novel MAR policies is suggested. |
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