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Rainwater Harvesting under Endogenous Capacity of Storage: a Solution to Aquifer Preservation?

Abstract : This paper studies groundwater management in the presence of rainwater harvesting (RWH). We propose a two-state model that takes into account the dynamics of the aquifer and the standard dynamics of the storage capacity, and we assume that the collection of rainwater reduces the natural recharge. We analyze the trade-off between these two water harvesting techniques in an optimal control model. In particular, we show that, when these techniques are perfect substitutes, the development of RWH leads in the long run to a depletion of the water table, even if pumping is reduced. This result is illustrated by a numerical application for the Pecos River Basin (New Mexico, USA). JEL: Q25, C61, D61. / KEY WORDS: Rainwater Harvesting, Conjunctive Use, Groundwater Management, Optimal Control.
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Submitted on : Monday, February 6, 2017 - 1:51:21 PM
Last modification on : Wednesday, August 5, 2020 - 3:12:06 AM

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Hubert Stahn, Agnès Tomini. Rainwater Harvesting under Endogenous Capacity of Storage: a Solution to Aquifer Preservation?. Annals of Economics and Statistics, CNGP-INSEE, 2015, pp.209--234. ⟨10.15609/annaeconstat2009.119-120.209⟩. ⟨hal-01457327⟩

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