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Water 2018, 10(4), 363; doi:10.3390/w10040363

A Linear Programming Approach to Water Allocation during a Drought

1
Environmental Change Institute, University of Oxford, Oxford University Centre for the Environment, South Parks Road, Oxford OX1 3QY, UK
2
Centre for Socio-Legal Studies, University of Oxford, Manor Road Building, Oxford OX1 3UQ, UK
*
Author to whom correspondence should be addressed.
Received: 22 February 2018 / Revised: 13 March 2018 / Accepted: 21 March 2018 / Published: 23 March 2018
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Abstract

The economic impacts of a drought depend critically on how water is allocated to different users. Choices as to water allocation can often reflect wider economic policy, environmental, and social goals and constraints. This research applies a multi-objective linear programming input-output method to determine a suite of water supply allocations for different economic sectors in a drought. Using the UK as a case study, we develop estimates of the minimum potential economic impact associated with different water allocations under a range of climate and policy scenarios. Estimates of total impact range from −0.16% to −1.48% of total output depending on the drought scenarios tested. The approach offers the flexibility to set different policy objectives in terms of water allocations/restrictions, employment or a range of other objectives, including constraints to rebalance the economic system. In allowing for the inclusion of other economic, social, and environmental constraints, it provides a framework for policymakers to assess how water allocation decisions interact with other policy goals to determine the economic impacts of a drought. Challenging decisions about how to allocate water during a drought are likely to remain important in the future. View Full-Text
Keywords: input-output analysis; water economics; water management; optimization input-output analysis; water economics; water management; optimization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Freire-González, J.; Decker, C.A.; Hall, J.W. A Linear Programming Approach to Water Allocation during a Drought. Water 2018, 10, 363.

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