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Le bassin versant de l'oued Grou (plateau central marocain) : étude hydro-climatologique

Abstract : The objective of this research in hydroclimatology is to define the general flow characteristics conditions of the oued Grou, as a knowledge of water resources, in a region which is marked by a grave dryness. Tributary river of Bou-Regreg, the grou is representative of the characters of the border of south and south-est of the plateau central. The channel seems enough regular although it crosses hilly regions with watertight substratum, characterised by a great discontinuity of vegetal cover. The type of climate is semi-barren mediterranean. The essential characters are represented on one hand by variability which is linked to a great year irregularity and at the existence of sequences of dry and wet years, and, on the other hand, by a great contrast of seasons (alternance of a wet, clement season and a warm, dry season). The river flow follows the distribution of precipitations with two distinct seasons, a short high flow and a long period of low flow. The study of average shows, in terms of frequencies, how intervenes the prevalent list of weather conditions and lithology in the flows. This list is confirmed with a statistical study of extreme flows (rising and lowest water levels). The knowledge flows is realised at the catchments areas controlled by hydrometric stations in the water balances. The water balance use the models of space quantification of rain, temperature and the determination of characteristics flows by analysing hydrological phases. This approach shows the dominating effects of permeable formations and scarceness of water tables, favours the overland flow and bounds the alimentation during low flow. This research shows the necessity to increase the knowledge of water resources and how the present indufficient system of measure must be improved
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Brahim Cherrad. Le bassin versant de l'oued Grou (plateau central marocain) : étude hydro-climatologique. Histoire. Université Paul Verlaine - Metz, 1997. Français. ⟨NNT : 1997METZ004L⟩. ⟨tel-01777244⟩

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