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Since the early 1980s, several regions of Morocco have experienced alternating series of wet and dry periods related to climate change, with significant consequences for the country’s economy. This study aims to map flood hazards by using a hydraulic modeling approach, with a specific focus on the Oued (river) Zaouiat Sidi Hamza passing through Zaouiat Sidi Hamza township belonging to the High Ziz watershed (province of Midelt, region of Drâa-Tafilalet, Morocco). Hydraulic modeling and flood simulation were carried out followed by mapping of the flood hazard. The Oued Zaouiat Sidi Hamza River can cause torrential flooding issues, particularly during periods of heavy storms, impacting agricultural land and certain buildings on both river banks. All the cultivated areas developed alongside the river are at risk of flooding. Moreover, undermining and erosion of the river’s banks lead to rising high-water levels and flooding agricultural terraces. The use of geographic information systems and hydraulic modeling tools is essential to gain a deeper understanding of this situation. Also, the mapping of lineaments and fractures in the study area, carried out by satellite image processing, helped to quantify the directional influence of these lineaments on the flow of the hydrographic network, on the orientation of the circulation of surface water, and on the storage of groundwater. According to this study, the most vulnerable areas to flooding and erosion are those that receive the most water in the basin and have steep slopes. Decision-makers can use the results to produce development plans tailored to combat these risks and raise awareness among the population concerned, improving water resource evaluation and forecasting, as well as improving agricultural production.

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Geological Survey, Gitology, and Geophysical of Deposit Tighmart (High Atlas Demnat)

Wafik¹,

Najine²,

Zakaria³

et al. 2017

ESJ

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The copper site Tighmart, study area is located about 27 km NNE of the city of Demnate in the Central High Atlas. On a stand dominated by Devonian shales and sandstones with limestone benches centimeter, rests a cover Triassic (sandstone, red clay with discontinuous basalt flows) and Jurassic (Lias carbonate bars, based on consistent training gypsiferous lower Lias). The set is structured faulted anticline and eroded. Electrical tomography has been used in order to characterize the structural elements that can promote the introduction of the copper, and the mineral density. This mineralization is concentrated locally in metric nodes, formed by the junction of the N70 ° faults and N40 °. This is very crushed zones decametric extension and where there is a large concentration of chalcocite associated with malachite and azurite rarely. In general, two areas have been identified on both sides of the old gallery: -The southern part crossed by the thalweg shows the dolerite attributed resistant levels through which the levels of oxides and hydroxides of iron and aluminum at depths of 8 to 13 m. This part of the sector does not really present significant reserves given that no continuity was confirmed. -The northern part of a very rugged topography presents no surface mineralization index. However, electrical tomography profiles in this sector show large anomalous beaches right pockets found in the gallery. The examination of the values of apparent resistivity advocates appearing mineralization from 23 m deep.

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Cited by 3 publications

References 20 publications

Stratigraphic distribution and paleoecological significance of Early Jurassic (Pliensbachian-Toarcian) lithiotid-coral reefal deposits from the Central High Atlas of Morocco

Stratigraphic distribution and paleoecological significance of Early Jurassic (Pliensbachian-Toarcian) lithiotid-coral reefal deposits from the Central High Atlas of Morocco

Flood risk assessment, a case study in an arid environment of Southeast Morocco

Geological Survey, Gitology, and Geophysical of Deposit Tighmart (High Atlas Demnat)

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