On conjunctive management of groundwater and rainwater

Abstract : We consider groundwater managed by a sole owner and where a perfect substitute, rainwater harvesting, is physically connected with the primary water source. This generates a marginal opportunity cost of using rainwater, since harvested water does not infiltrate. We first discuss the conditions that lead to a switch toward rainwater harvesting, then look at long-term rainwater harvesting systems. Due to limited storage capacity, long-term use of rainwater is only possible in conjunction with groundwater. We show that this only arises if the price of water is higher than the full marginal cost of rainwater harvesting. We also provide comparative statics related to this configuration, especially concerning the long-term water table. These results are finally illustrated by numerical examples. (C) 2017 Elsevier B.V. All rights reserved.
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Soumis le : jeudi 19 octobre 2017 - 19:04:36
Dernière modification le : jeudi 1 février 2018 - 17:38:11

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Hubert Stahn, Agnès Tomini. On conjunctive management of groundwater and rainwater. Resource and Energy Economics, Elsevier, 2017, 49, pp.186 - 200. 〈http://www.sciencedirect.com/science/article/pii/S092876551630032X?via%3Dihub〉. 〈10.1016/j.reseneeco.2017.05.002〉. 〈hal-01619915〉

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