Combined hydrogeological and nitrate modelling to manage water resources of the Middle Soummam Aquifer, Northeast of Algeria

Kessasra, Farès; Mesbah, Mohamed; Khemissa, Zineb; Bouab, Noussaiba; Khaled-Khodja, Soumia; Lamari, Hanane

doi:10.1007/s12517-017-3160-4

Cited by 10 publications

(5 citation statements)

References 21 publications

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“…Similarly, potential remediation techniques are hampered by this lack of knowledge. Thus, it is important to develop new methods that can be tested on various experimental areas and observations of nitrate concentrations combined with transport modeling to efficiently evaluate future environmental effects and potential remediation alternatives 15,16 . Shimabara City, Nagasaki, Japan, depends solely on groundwater for its public water supply.…”

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confidence: 99%

Spatiotemporal variation of nitrate concentrations in soil and groundwater of an intensely polluted agricultural area

Nakagawa

Amano

Persson

et al. 2021

Sci Rep

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Nitrate pollution in groundwater is a serious problem in many parts of the world. However, due to the diffuse and common spatially over-lapping character of potential several non-point pollution sources, it is often difficult to distinguish main nitrate sources responsible for the pollution. For this purpose, we present a novel methodology applied to groundwater for an intensely polluted area. Groundwater samples were collected monthly from April 2017 to March 2018 in Shimabara City, Nagasaki, Japan. Soil samples were collected seasonally at soil surface and 50 cm depth at 10 locations during the same period. Sequential extraction by water and extract agents was performed using calcium phosphate for anions and strontium chloride for cations. Mean nitrate concentration in groundwater close to a livestock waste disposal site (hereinafter called “LWDS”) was 14.2 mg L−1, which is exceeding Japanese drinking water standards (10 mg L−1). We used coprostanol concentration, which is a fecal pollution indicator, to identify pollution sources related to livestock waste. For this purpose, we measured coprostanol (5β) and cholestanol (5α) and then calculated the sterol ratio (5β/(5β + 5α)). The ratios for three groundwater sampling sites were 0.28, 0.26, and 0.10, respectively. The sterol ratios indicated no pollution (< 0.3). However, the detection of coprostanol originating from animal and human waste showed that groundwater was clearly affected by this pollution source. Nitrate levels in the soil were relatively high in samples collected close to the LWDS and coprostanol contents were affected by livestock waste. Soil and groundwater nitrate concentrations displayed a complex but strong relationship. Nitrate contents were shown to be transported downstream from source areas in both soil and groundwater.

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confidence: 99%

Spatiotemporal variation of nitrate concentrations in soil and groundwater of an intensely polluted agricultural area

Nakagawa

Amano

Persson

et al. 2021

Sci Rep

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“…Finally, the Quaternary is characterized by alluvial deposits occupying the entire Soummam River valley and its tributaries, as well as alluvial fans and terraces composed of gravels, sands, and clays. The Quaternary alluvium represents the primary aquifer in the study area (Kessasra et al, 2017).…”

Section: Study Areamentioning

confidence: 99%

“…The land ll site, located near the Taharacht industrial zone, is situated 8 km from the town center in the northeastern Akbou province, on alluvial aquifer of the middle Soummam River. According to Kessasra et al, (2017) the zone concerned is highly vulnerable to pollution by nitrate, due to the presence of alluvial deposits that allow in ltration and transfer of leachates from the land ll, and contribute to groundwater contamination. Dump B and D are also included in the exclusion zone because they are less than 1 km away from settlement and Soummam River.…”

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GIS-MCDM Integrated approach for suitable landfill site selection: Case study of the southwestern part of Bejaia Province, Algeria

Bechroune,

Kherrour,

Belaid

et al. 2024

Preprint

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Household waste management in developing countries is a major concern, from production to final disposal, so siting a landfill is a difficult and complex process, requiring the assessment of many factors. In this study, an integrated approach combining Geographic Information System (GIS) and Analytic Hierarchy Process (AHP) was used to select optimal sites for the implementation of a landfill in the south-eastern region of the Bejaia Province. This analysis is based on fourteen factors from different sources, including geomorphological, hydrological, climatic and socio-economic criteria. These spatial data are processed and analyzed in a GIS environment, while the AHP approach has been used to evaluate the importance of each factor in order to determine the weight and combine the selected factors. Finally, a suitability map was prepared by overlay analysis, indicating that the study area is divided into four suitability classes, with areas classified as unsuitable and low suitable representing 4.484% and 28.26% respectively, while 60% is considered moderately suitable and only 0.49% is highly suitable for the construction of a landfill. Based on these results, four potential sites were identified out of a total of thirteen. However, this study underlines the need to take into account social-economic and environmental aspects in the decision-making process to ensure efficient and durable waste management.

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“…Hydraulic conductivity values were decreased in the totality of the study area except for Amizour area which was not been changed; because this area includes three wells with a very reduced difference between calculated and measured hydraulic heads, less than ±1m. High heterogeneity could be at the origin of a possible underestimation of hydraulic conductivity values (Kessasra et al, 2017); indeed, each area was been processed by change in initial hydraulic conductivity (Fig. 15) as followed:…”

Section: Model Calibrationmentioning

confidence: 99%

Coupled hydrogeological modeling and nitrate transport modeling to assess vulnerability pollution in an anthropized watershed, case study of the lower Soummam valley (Bejaia Northeast ofAlgeria)

Benabbes

Kessasra

Foughalia

et al. 2022

Preprint

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Anthropogenic activities as waste water discharges and fertilizers use were the main factors controlling nitrate concentration in the lower Soummam valley, situated in the North-East of Algeria. The objectives of this study are to investigate nitrogen pollution, evaluate the groundwater vulnerability using DRASTIC-method and simulate nitrate mass transport coupled with a hydrogeological model. Hydrogeochemical results demonstrate a large seasonal variation between the high water period (May 2019 and 2021) and the low water period (September 2019- November 2020 and 2021). Temperature and electric conductivity were increased in the low-water period. However, pH, dissolved oxygen and nitrate decreased in the high-water period and finally nitrites and ammonium showing irregular fluctuation. DRASTIC vulnerability issues illustrate that the alluvial aquifer of lower Soummam presents high to very high contamination. A hydrogeological model was performed using PMWIN and coupled with a solute transport model. Calibration was achieved under steady state conditions during the period of 2011–2021. It was validated by the comparison with measured piezometric levels and nitrate concentrations in May 2021. Three scenarios were established under transient conditions in order to simulate variation of both groundwater levels and nitrate concentrations from 2011 to 2050. Simulation issues show that river-aquifer exchanges and dependent head boundary present the main terms in water inflow and restituted respectively about 44% and 38% of the total inflow. However the head constant presented approximately 85% of the total outflow. Nitrate model illustrates a slight variation in 27 wells of a total of 29. Substantial increase in Remila well located in the upstream, a raise was observed at 14.6 mg/l when the pumping volumes reached 45.8 Mm3/years, 16.5 mg/l according to a slight increase in pumping volume 49.19 Mm3/years and finally, an increase was calculated at 27.3 mg/l when the pumping volume increases to 98.38 Mm3/years in 2050. In Saidj well situated in the downstream, a significant reduction was observed at 19.9 and 24.4 mg/l respectively in 2021 and 2030, however, a sharp increase was estimated at 16.8mg/l in 2050. The river and groundwater head boundaries are the main factors controlling the hydrodynamic aquifer system and nitrate transport in the alluvial aquifer of the lower Soummam valley.

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Combined hydrogeological and nitrate modelling to manage water resources of the Middle Soummam Aquifer, Northeast of Algeria

Cited by 10 publications

References 21 publications

Spatiotemporal variation of nitrate concentrations in soil and groundwater of an intensely polluted agricultural area

Spatiotemporal variation of nitrate concentrations in soil and groundwater of an intensely polluted agricultural area

GIS-MCDM Integrated approach for suitable landfill site selection: Case study of the southwestern part of Bejaia Province, Algeria

Coupled hydrogeological modeling and nitrate transport modeling to assess vulnerability pollution in an anthropized watershed, case study of the lower Soummam valley (Bejaia Northeast ofAlgeria)

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