Hydrogeological setting of a karstic aquifer in a semi-arid region: a case from Cheria plain, Eastern Algeria

Khemissi, Chamekh; Bâali, Fethi; Yahiaoui, Abde El Wahab; Kerboub, Djawher

doi:10.1007/s13146-017-0400-3

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…The Eocene limestone formation serves as the most extensive aquifer in the Cheria basin and is delimited by the marl-limestone bedrock. The thickness of the aquifer increases toward the center of the basin, while the alluvial aquifer's limited thickness and its poor water quality reduce its importance in water supply (Baali et al 2007;Fehdi et al 2011;Chamekh et al 2018).…”

Section: General Settingmentioning

confidence: 99%

“…Over the past few decades, the town of Cheria has been suffering from severe water scarcity due to drought, limited rainfall, and overuse of the resources, given its heavy reliance on groundwater. The adverse effects of over-exploitation, such as the land subsidence characteristic of karst areas (Fehdi et al 2011;Nouioua et al 2013;Baali et al 2015;Chamekh et al 2018), underscore the urgent need for sustainable management and use of groundwater in the region. Artificial recharge of groundwater emerges as a crucial approach to augment groundwater resources.…”

Section: Introductionmentioning

confidence: 99%

“…To better manage the karst aquifers, it is essential to understand and control the changes in piezometric levels and the distribution of seepage (Chamekh et al 2018). Therefore, a three-dimensional numerical model of the main aquifer in the Cheria area, the Eocene aquifer was established and calibrated in both steady state (1999) and transient conditions using Visual MODFLOW Flex version 6.1.…”

Section: Introductionmentioning

confidence: 99%

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Assessing the impact of artificial recharge on groundwater in an over-exploited aquifer: A case study in the Cheria Basin, North-East of Algeria

Djellali,

Guefaïfia,

Fehdi

et al. 2023

Journal of Groundwater Science and Engineering

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The Cheria region in Northeastern Algeria has been facing aquifer overexploitation by the agricultural sector and prolonged droughts, resulting in a considerable decline in groundwater levels. This study investigates the feasibility of implementing artificial recharge techniques to replenish the Eocene aquifer which serves as the primary water source in the Cheria region. A 3D transient numerical model, based on the finite difference method, was used to simulate groundwater flow from 2021 to 2031 using Visual MODFLOW Flex. During the modelling process, three scenarios were considered: (1) including pumping without a recharge, (2) recharge of the entire area through efficient infiltration without pumping, and (3) artificial recharge using river water infiltration basins at two sites, Draa Douamis sinkholes and Eocene limestone outcrops. The simulation results showed that aquifer exploitation without recharge caused significant drawdowns, which were 3 m to 7 m in the north-eastern part and 8 m to 12 m in the central and southern parts. In contrast, the second scenario, involving recharge without pumping, showed a rise in groundwater levels of 2 m to 2.7 m in the north-eastern part and 3 m to 3.62 m in the central and southern parts. The third scenario, employing artificial recharge, indicated a positive response to artificial recharge, with increased piezometric levels at the proposed sites, signifying a beneficial impact on the aquifer. These findings underline the potential of artificial recharge as a promising approach to address the groundwater depletion and environmental issues in the Cheria Basin.

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Section: General Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessing the impact of artificial recharge on groundwater in an over-exploited aquifer: A case study in the Cheria Basin, North-East of Algeria

Djellali,

Guefaïfia,

Fehdi

et al. 2023

Journal of Groundwater Science and Engineering

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“…It is a syncline structure. It is a wide plateau of a triangular shape, covering of around 720 km 2 . The altitudes vary from 985 to 1700 m.…”

Section: Study Areasmentioning

confidence: 99%

“…Major sub surface karst cavities is located nourthen and centre part of Cheria syncline. Hence, cavity roof thickness are varied with geometrical and geomchanical parameters on the fractured rock [2]. The depth of the karstified zones depends on the geomechanical parameters, which is controlled by the fracture aperture distribution [3].…”

Section: Introductionmentioning

confidence: 99%

Influence of Geomechanical and Hydraulic Parameters of the Fractured Rock on the Evolution of Underground Karst Cavities in Cheria Area, NE Algerea

Khemissi¹

2018

AJWSE

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The main goal of this study is to analyze the surface part of the karst and some underground characteristics of Eocene karst system. The Karst cavities are widespread in the Eocene forming the upper formation under the Quaternary cover in the Cheria syncline. Therefore, the karstfied zone requires new methods for estimating average depth of the karts cavities from structural, geometrical, and mechanical properties of fractured rock. In that way, statistical methods is very efficient for describing in detail the shallow part of karst cavities, when Eocene limestone outcrops at the surface in the center and northern of the basin. A stochastic analysis is carried out to evaluate the influence of correlations between relevant distributions on the simulated RMR values, also to simulate the cavity depth. The model is also used in Monte Carlo simulations. The statistical analysis showed that Rock Mass Rating (RMR) depends on the hydraulically and geomechancal parameters. Naturally it is always possible to simulate a cavity depth (PKR) by several hydraulically and geometrical parameters of fractures (uniaxial compressive strength; RC), Rock Quality Designation (RQD), Spacing fracture (E J), inflow per 10 tunnel length (D 10m.L), friction cording of the angle of the rock mass (C D-I.j), layer depth (Pc), average aperture to each group of the fracture (d i), average fracture frequency to each group of the fracture (f i), fracture depth (df i)), especially in the case of k non real fracture geometry. The study of the relations between geomechanical fractured rock and fracture geometry, we can simulate any cavity depth (PRK) in Chera syncline.

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The EPIK multi-attribute method for intrinsic vulnerability assessment of karstic aquifer under semi-arid climatic conditions, case of Cheria Plateau, NE Algeria

et al. 2020

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Hydrogeological setting of a karstic aquifer in a semi-arid region: a case from Cheria plain, Eastern Algeria

Cited by 3 publications

References 8 publications

Assessing the impact of artificial recharge on groundwater in an over-exploited aquifer: A case study in the Cheria Basin, North-East of Algeria

Assessing the impact of artificial recharge on groundwater in an over-exploited aquifer: A case study in the Cheria Basin, North-East of Algeria

Influence of Geomechanical and Hydraulic Parameters of the Fractured Rock on the Evolution of Underground Karst Cavities in Cheria Area, NE Algerea

The EPIK multi-attribute method for intrinsic vulnerability assessment of karstic aquifer under semi-arid climatic conditions, case of Cheria Plateau, NE Algeria

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