Towards a better understanding of the Oulmes hydrogeological system (Mid-Atlas,Morocco) |
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| Authors: | Samuel Wildemeersch Philippe Orban Ingrid Ruthy Olivier Grière Philippe Olive Abdelkhalek El Youbi Alain Dassargues |
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| Institution: | 1.Hydrogeology and Environmental Geology, GEO3, ArGEnCo, Aquap?le,University of Liège,Liège,Belgium;2.F.R.I.A., F.R.S.-FNRS,Brussels,Belgium;3.G2H Conseils,Guermantes,France;4.Thonon-Les-Bains,France;5.Parc Industriel de Bouskoura, Eaux Minérales d’Oulmès,Casablanca,Morocco |
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| Abstract: | Located in the Mid-Atlas (Morocco), the Oulmes plateau is famous for its mineral water springs “Sidi Ali” and “Lalla Haya”
commercialised by the company “Les Eaux minérales d’Oulmès S.A”. Additionally, groundwater of the Oulmes plateau is intensively
exploited for irrigation. The objective of this study, essentially performed from data collected during isotopic (summer 2004)
and piezometric and hydrogeochemical field campaigns (spring 2007), is to improve the understanding of the Oulmes hydrogeological
system. Analyses and interpretation of these data lead to the statement that this system is constituted by a main deep aquifer
of large extension and by minor aquifers in a perched position. However, these aquifers interact enough to be in total equilibrium
during the cold and wet period. As highlighted by isotopes, the origin of groundwater is mainly infiltration water except
a small part of old groundwater with dissolved gas rising up from the granite through the schists. |
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