Modélisation de l’écoulement de la nappe de Berrechid (Maroc)

Bouqdaoui, Karima El; Aachib, Mostafa; Blaghen, Mohamed; Kholtei, Sanaa

doi:10.1051/lhb:2008019

Cited by 7 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The hydraulic characteristics, namely the hydraulic conductivity and the storage coefficient of the aquifer used, are those obtained by calibration of the numerical model [8]. The simulations relate to the main groundwater catchments (P1 to P9) intended for drinking water supply in the Berrechid region ( Figure 6).…”

Section: Resultsmentioning

confidence: 99%

“…The data used result from geological and hydrogeological works carried out on Berrechid aquifer ([4] [10] [19]). Hydrodynamic parameters such as hydraulic conductivity (permeability), coefficient of storing, porosity and Piezometric data have been used in the implementation of this model [8].…”

Section: Methodsmentioning

confidence: 99%

“…The model is a numerical schematization of the hydrogeological system. It allows you to go from a natural complex system, the ground, to a whole model digital, the model development requires several steps, such as the determination of objectives to be achieved, the choice of the software used, the design of conceptual model [8], model calibration and finally the realization of predictive simulations ( Figure 3).…”

Section: K El Bouqdaoui M Aachib Journal Of Geoscience and Environmentioning

confidence: 99%

“…The MODFLOW modeling provided a better understanding of the hydrodynamic functioning of the Berrechid aquifer. During this modeling, the balance sheet turned out to be negative over the simulated period; this is due to increasing exploitation of groundwater, combined with dry climatic conditions [5] [8].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Delimitation of the Perimeters of Protection of Groundwater Catchments of the Berrechid Aquifer (Morocco) through Hydrogeological Modeling

Bouqdaoui¹,

Aachib²

2018

GEP

Self Cite

View full text Add to dashboard Cite

Over the last two decades, repeated dry periods across the country have clearly highlighted the weaknesses in the balance of needs and surface water resources. The latter are increasingly failing due to the large inter-annual rainfall variability and high exposure to evaporation. Because of their high inertial capacity, groundwater is less affected by interannual fluctuations and compensates for the irregularity of surface water availability. However, in addition to being overexploited, groundwater can be exposed to various types of pollution that can alter their quality, sometimes irreparably. The issue of delimiting the protection perimeters around catchments implies a local development policy that is coherent from the point of view of water management and spatial planning. The present work contributes to the delimitation of the perimeters of protection of groundwater catchments of the Berrechid aquifer. Thanks to the "particle tracking" method through the use of models MODPATH and MODFLOW interfaced to GMS 4.0 (Groundwater Modeling System Version 4.0), we delimited the closed protection perimeters, using the numerical MODPATH model, by drawing the 50-day isochrones. Within these perimeters, any bacteriological or chemical action is prohibited. We delimited also the distant protection perimeters (infinite transfer time) that serve as an extension to the closed protection perimeters (transfer time of 50 days). Feeding areas have been introduced to protect groundwater from substances with insufficient degradation and natural retention. The results obtained show that these wells (catchments (P1 to P9) intended for drinking water supply in the Berrechid region) could be contaminated if the part of the aquifer to the south, upstream of these wells, is polluted by persistent chemical substances. The agricultural activities must be controlled and regulated by the State au-How to cite this paper: El

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: K El Bouqdaoui M Aachib Journal Of Geoscience and Environmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Delimitation of the Perimeters of Protection of Groundwater Catchments of the Berrechid Aquifer (Morocco) through Hydrogeological Modeling

Bouqdaoui¹,

Aachib²

2018

GEP

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, during the second period from 1997 to 2017, about 71%, the years were normal and that 29 % were moderately or severe dry years but no wet years. Results from this study confirm what was reported by other studies in Morocco (Lachgar and al., 2016;El Bouqdaoui and al., 2006), and demonstrate that rainfall is more erratic with more and more severe droughts that leads to crop failure and loss. …”

Section: Materials and Methods:-mentioning

confidence: 99%