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Sfax, Tunisia

Boughariou E.,University of Sfax | Bouri S.,University of Sfax | Khanfir H.,ARE | Zarhloule Y.,University Med I
Desalination and Water Treatment | Year: 2014

Global warming is a worldwide phenomenon causing a temperature increase, which affects water resources. In Tunisia, high temperatures were recorded in the last decades with a warming tendency of about 1.1°C for 2020 and 2.1°C for 2050. The Chaffar region is characterized by an important agricultural activity and a semi-arid climate in which the irregular precipitations reach low values. Its shallow groundwater is overexploited with a disturbed hydraulic balance. A drawdown of its piezometric head has been noticed in the last decade because of high exploitation and rainfall deficit as a consequence of global warming. To highlight the impacts of the climatic changes on water resources in the Chaffar region, a mathematical model was prepared using MODFLOW program. It is of great importance to predict and simulate the effects of global warming on hydraulic head of Chaffar shallow aquifer, which is considered as a forbidden area for creating new wells. Considering a constant consumption, the piezometric maps established for 2020 and 2050 show an important drawdown of the hydraulic heads especially downstream the aquifer. It could be even more alarming by 2050 with a probable seawater intrusion. © 2013 Balaban Desalination Publications. All rights reserved. Source


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A.R.E. | Date: 1999-09-07

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Boughariou E.,University of Sfax | Saidi S.,University of Sfax | Barkaoui A.E.,University of Mohammed I | Khanfir H.,ARE | And 2 more authors.
Arabian Journal of Geosciences | Year: 2015

The groundwater constitutes the major water resource in the study area of the current paper that is Sfax region. The latter is located in the south of Tunisia where the climate is arid. In fact, the natural groundwater recharge of the region is deeply affected by the lack of precipitations which affects its natural groundwater recharge. The aim of the current paper is to define recharge potential zones and to estimate the rainfall recharge of the shallow groundwater. Henceforth, the potential recharge map was established, based on the basin characteristics using lithology, topography, slope, and stream network parameters. Recharge estimations were based on the numerical methods: the Estimation of Recharge in Overexploited Aquifers (Estimación de la Recarga en Acuíferos Sobreexplotados) (ERAS) numerical model, the Schoeller equation, the Fersi equations, and the Direction Générale des Ressources en Eaux (General Administration of Water resources) (DGRE) coefficients. As a matter of fact, applying the Fersi equations and the DGRE coefficients on the potential zones allowed the deduction of a new spatial repartition of both favorable and unfavorable recharge zones. © 2014, Saudi Society for Geosciences. Source

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