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Private exploitation of the North-Western Sahara Aquifer System

Amine Chekireb (), Julio Goncalves (), Hubert Stahn and Agnes Tomini
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Amine Chekireb: Aix-Marseille Univ., CEREGE, AMSE, Marseille, France.
Julio Goncalves: Aix-Marseille Univ., CEREGE, Marseille, France., https://www.cerege.fr/en/users/julio-goncalves

No 2144, AMSE Working Papers from Aix-Marseille School of Economics, France

Abstract: We formulate a hydro-economic model of the NorthWestern Sahara Aquifer System (NWSAS) to assess the effects of intensive pumping on the groundwater stock and examine the subsequent consequences of aquifer depletion. This large system comprises multi-layer reservoirs with vertical exchanges, all exploited under open access properties. We first develop a theoretical model to account for relevant features of the NWSAS by introducing, in the standard Gisser-Sanchez model, a non-stationary demand and quadratic stock-dependent cost functions. In the second step, we calibrate parameters values using data from the NWSAS over 1955-2000. We finally simulate the time evolution of the aquifer system with exploitation under an open-access regime. We specifically examine time trajectories of the piezometric levels in the two reservoirs, the natural outlets, and the modification of water balances. We find that natural outlets of the two reservoirs might be totally dried before 2050.

Keywords: hydro-economic model; private pumping; multi aquifer system; groundwater-dependant ecosystems; semi-arid region; simulation (search for similar items in EconPapers)
JEL-codes: C61 C62 Q15 Q25 (search for similar items in EconPapers)
Pages: 24 pages
Date: 2021-11
New Economics Papers: this item is included in nep-ara, nep-env and nep-his
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Related works:
Working Paper: Private Exploitation of the North-Western Sahara Aquifer System (2023) Downloads
Working Paper: Private exploitation of the North-Western Sahara Aquifer System (2021) Downloads
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