Present recharge of an aquifer in a semi-arid region: an example from the Turonian limestones of the Errachidia basin, Morocco

Ouali, Abdelhadi El; Mudry, Jacques; Mania, J.; Chauve, P.; Elyamine, N.; Marzouk, M. A.

doi:10.1007/s002540050413

Cited by 15 publications

(6 citation statements)

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“…Potentiometric surface contours become more and more distant from the recharge area, indicating a dominance of permeable formations towards the estuary in agreement with geological/hydrogeological description. Moreover, the general shape of the potentiometric surface is convex, showing a radial aquifer with divergent streamlines contrary to semi-arid 18 and arid regions where convergent streamlines towards the water course axis are generally observed (e.g., Ouali et al 1999;Lienou et al 1999).…”

Section: Analysis Of Groundwater Flowmentioning

confidence: 99%

Shallow urban aquifers under hyper-recharge equatorial conditions and strong anthropogenic constrains. Implications in terms of groundwater resources potential and integrated water resources management strategies

Nlend

Celle-Jeanton

Huneau

et al. 2021

Science of The Total Environment

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Section: Analysis Of Groundwater Flowmentioning

confidence: 99%

Shallow urban aquifers under hyper-recharge equatorial conditions and strong anthropogenic constrains. Implications in terms of groundwater resources potential and integrated water resources management strategies

Nlend

Celle-Jeanton

Huneau

et al. 2021

Science of The Total Environment

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“…The latter is rich in fertile valleys but with low development of perennial courses. The geology is of Jurassic type [35] with limestone and dolomitic limestone formations that constitute good water reservoirs [36][37][38][39]. The climate is semiarid with short and brutal precipitation.…”

Section: Study Areamentioning

confidence: 99%

Modeling and Spatiotemporal Mapping of Water Quality through Remote Sensing Techniques: A Case Study of the Hassan Addakhil Dam

et al. 2021

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With its high water potential, the Ziz basin is one of the most important basins in Morocco. This paper aims to develop a methodology for spatiotemporal monitoring of the water quality of the Hassan Addakhil dam using remote sensing techniques combined with a modeling approach. Firstly, several models were established for the different water quality parameters (nitrate, dissolved oxygen and chlorophyll a) by combining field and satellite data. In a second step, the calibration and validation of the selected models were performed based on the following statistical parameters: compliance index R2, the root mean square error and p-value. Finally, the satellite data were used to carry out spatiotemporal monitoring of the water quality. The field results show excellent quality for most of the samples. In terms of the modeling approach, the selected models for the three parameters (nitrate, dissolved oxygen and chlorophyll a) have shown a good correlation between the measured and estimated values with compliance index values of 0.62, 0.56 and 0.58 and root mean square error values of 0.16 mg/L, 0.65 mg/L and 0.07 µg/L for nitrate, dissolved oxygen and chlorophyll a, respectively. After the calibration, the validation and the selection of the models, the spatiotemporal variation of water quality was determined thanks to the multitemporal satellite data. The results show that this approach is an effective and valid methodology for the modeling and spatiotemporal mapping of water quality in the reservoir of the Hassan Addakhil dam. It can also provide valuable support for decision-makers in water quality monitoring as it can be applied to other regions with similar conditions.

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“…These formations are the potential location of aquifers that manifest in many springs of varying importance, the groundwater of which is a major source of life for the local population. Despite the prolonged drought cycles that this region has suffered in recent years and which have caused a significant water deficit, as well as the low effective rainfall in the basin, the majority of springs from the Cretaceous basin of Errachidia continue to show a significant flow rate [7,8]. The hypothesis of a feeding of the aquifers of the basin from the Jurassic aquifers of the High Atlas has been proposed [7,9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the prolonged drought cycles that this region has suffered in recent years and which have caused a significant water deficit, as well as the low effective rainfall in the basin, the majority of springs from the Cretaceous basin of Errachidia continue to show a significant flow rate [7,8]. The hypothesis of a feeding of the aquifers of the basin from the Jurassic aquifers of the High Atlas has been proposed [7,9,10]. The usual methods of estimating the recharge of the aquifers often do not provide the desired precision [11,12].…”

Section: Introductionmentioning

confidence: 99%

Groundwater Hydrochemical and Isotopic Evolution from High Atlas Jurassic Limestones to Errachidia Cretaceous Basin (Southeastern Morocco)

Roubil

Ouali

Bülbül

et al. 2022

Water

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The objective of this research was to determine the recharge of the Cretaceous aquifers by the High Atlas, as well as the interaction and possible mixing phenomena between the waters of the different aquifers, by investigating the hydrochemical and isotopic evolution of groundwater flow paths from the limestone karst systems of the High Atlas to the Cretaceous basin of Errachidia. Geological techniques were used to investigate and confirm the chemical and isotopic characteristics of the waters. Although the Gibbs diagram shows that water–rock interaction is the dominant hydrochemical process, some water samples in the Cretaceous basin are influenced by both evaporation and water–rock interaction, indicating a mixture of rainfall and deep waters. A saturation index study indicated that limestone minerals were supersaturated in parts of the groundwater samples (calcite and dolomite). This result was confirmed by isotope data. Indeed, some Cretaceous basin samples show isotopic similarities to those from the Jurassic High Atlas. The geological cross-sections illustrate that the High Atlas Jurassic limestones are in direct contact with the Cretaceous basin’s permeable rocks, allowing groundwater to circulate from the High Atlas to Errachidia’s Cretaceous basin.

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Present recharge of an aquifer in a semi-arid region: an example from the Turonian limestones of the Errachidia basin, Morocco

Cited by 15 publications

References 0 publications

Shallow urban aquifers under hyper-recharge equatorial conditions and strong anthropogenic constrains. Implications in terms of groundwater resources potential and integrated water resources management strategies

Shallow urban aquifers under hyper-recharge equatorial conditions and strong anthropogenic constrains. Implications in terms of groundwater resources potential and integrated water resources management strategies

Modeling and Spatiotemporal Mapping of Water Quality through Remote Sensing Techniques: A Case Study of the Hassan Addakhil Dam

Groundwater Hydrochemical and Isotopic Evolution from High Atlas Jurassic Limestones to Errachidia Cretaceous Basin (Southeastern Morocco)

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