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On the Environmental Efficiency of Water Storage: the Case of a Conjunctive use of Ground and Rainwater

Author

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  • Hubert Stahn

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

  • Agnes Tomini

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

Abstract

Rainwater harvesting, consisting in collecting runoff from precipitation, has been widely developed to stop groundwater declines and even raise water tables. However, this expected environmental effect is not self-evident. We show in a simple setting that the success of this conjunctive use depends on whether the runoff rate is above a threshold value. Moreover, the bigger the storage capacity, the higher the runoff rate must be to obtain an environmentally efficient system. We also extend the model to include other hydrological parameters and ecological damages, which respectively increase and decrease the environmental efficiency of rainwater harvesting.

Suggested Citation

  • Hubert Stahn & Agnes Tomini, 2025. "On the Environmental Efficiency of Water Storage: the Case of a Conjunctive use of Ground and Rainwater," Working Papers hal-01447869, HAL.
    • Handle: RePEc:hal:wpaper:hal-01447869
    DOI: 10.1007/s10666-016-9509-3
    Note: View the original document on HAL open archive server: https://amu.hal.science/hal-01447869v1
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    Keywords

    Economie quantitative;

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