Simulation of water supply and water demand in the valley of Seybouse (East Algeria)

Aoun-Sebaiti, B.; Hani, Azzedine; Djabri, Larbi; Chaffai, Hicham; Aichouri, Imen; Boughrira, N.

doi:10.1080/19443994.2013.855662

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…Model verification was done by history matching over the period 1991-2009. The figure represents the mesh and boundaries conditions use by Modflow [BOUGHERIRA et al 2015;MCDONALD, HARBAUGH 1988;ZHENG, 1990] of the two aquifers [AOUN-SEBAITI et al 2014;CHOUCHANE et al 2014]: a) the superficial aquifers (SA), b) and the gravel aquifer (GA).…”

Section: Resultsmentioning

confidence: 99%

Salinity and modelling of the Annaba aquifer system, North-East of Algeria

Majour¹,

Hani²,

Djabri³

2018

Journal of Water and Land Development

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The potentiometer area in the Annaba basin, covering an area of 264 km2, has declined considerably since 1995. The analysis of the chronological hydrographs (1991–2009) of the piezometric observations shows that this decline is related to about twenty years (20 years) drought that began in 1991. To synthesize hydrological data and study regional changes in aquifer interactions caused by changes in discharge, and determine the contamination of aquifers by salty intrusion in coastal areas, and making forecasts by the year 2023, a multi-layered transient model as well as a solute transport model has been developed. The groundwater flow was modelled using the finite difference method with a horizontal dimension of 500 × 500 m for the cells. The model consists of two layers, the first corresponding to the alluvial phreatic aquifer and the second to the deep confined aquifer, and is calibrated against the steady state groundwater heads recorded before 1996. Model verification was done by history matching over the period 1991–2009. Under steady-state conditions, the correspondence between simulated and observed water levels is generally good (average difference of 0.4 m). For the deep aquifer, the simulated time-series hydrographs closely match the recorded hydrographs for most of the observation wells. For the alluvial aquifer, the recorded hydrographs cover only a short time period, but they are reproduced. The model indicates that groundwater pumping induced a decrease in natural discharge, a downward leakage in most of the basin and a continual water-level decline. The model has also been applied to the analysis of recharge impact. Simulating the behaviour of the system over the period 1991–2009 without pumping indicated small changes in hydraulic head. These results show that the groundwater reservoir has a low recharge, but excellent hydraulic properties. A solute-transport model was used to study aquifer contamination from salty intrusion in coastal sectors; it was extended to the year 2023 by simulating an optimistic hypothesis that maintains present pumping until 2023. The model indicates that the head decrease of the alluvial phreatic and deep confined aquifers will be 4 m and 5 m respectively. The solute concentration in the deep confined aquifer will increase from 1 gꞏdm−3 (prior 2009) to 5 gꞏdm−3 in 2023.

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Section: Resultsmentioning

confidence: 99%

Salinity and modelling of the Annaba aquifer system, North-East of Algeria

Majour¹,

Hani²,

Djabri³

2018

Journal of Water and Land Development

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“…Aoun-Sebaiti et al [9] implemented WEAP to mimic the water supply and water demand in Sibus Valley in Algeria, where they simulated climate change scenarios with increased reuse, while changing the farming patterns to designate the impact of each till 2050. Their results indicated a reduction of 30% in the water supply.…”

Section: Introductionmentioning

confidence: 99%

Investigating Water Demand under Different Irrigation Techniques Numerically in Al-Anbar Province - Iraq: A Case Study

Noon¹,

Elmolla²,

Ibrahim³

et al. 2022

eer

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In terms of the importance of achieving a successful integrated sustainable management to the agricultural sector within the light of the tangible decrease in Euphrates discharge, this research was initiated with the objective of investigating water demand under different irrigation methods, numerically. Primarily, literature in field of modeling and water scarcity was assembled and scrutinized. Anbar in Iraq was selected to be a case study, to which site visits were carried out and data were assembled. WEAP was selected to be implemented to the case study, where it was calibrated and verified against real data sets. Confident with the calibration process and based on previous studies results, WEAP was applied to the study area. 2010 was taken as the base year and simulations were carried out over a span of 30 years . Two scenarios were considered to calculate the water demand and the unmet demand. The 1 st scenario considered the present condition (i.e. using traditional irrigation methods), while the 2 nd scenario is a virtual condition (i.e. using modern irrigation techniques). The results indicated that the water demand decreased from 5846.59 to 4232.29 MCM, for the 1 st and 2 nd scenarios, respectively (i.e. decreased by 38%). Accordingly, it is recommended to implement modern irrigation methods to achieve successful integrated-sustainable-management in the agricultural sector.

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“…A model was applied to the watersheds of western Algeria to assess and analyse the current and projected balance of future resource management scenarios by taking into account the different policies and operational factors that might affect the demand until 2030 [HAMLAT et al 2012]. Another model was developed to simulate water resources and evaluate water management strategies in the region of Annaba [AOUN-SEBAITI et al 2013]. MANSOURI et al [2017] carried out a wider study on the Seybouse Basin (Annaba) and East Coast of Constantine (El-Taref), whose purpose is interregional planning and resource analysis using the WEAP model, to estimate the water demand, to analyse the multiple uses of the hydro-system and to make a comparison with the proposed water storage estimations.…”

Section: Introductionmentioning

confidence: 99%

Journal of Water and Land Development

Bouznad¹,

Elahcene²,

Belksier³

2020

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The pressure on the use of water and climate change has caused a decreased availability of water resources in semi-arid areas in the last decades. The Setif Province is one of the semi-arid zones of Algeria as it receives an average less than 400 mm•year -1 . The question of the evolution of demographic pressures and their impacts on water resources arise. By applying WEAP software (water evaluation and planning), the aim is to develop a model of water resources management and its utilization, assess the proportion of the resource-needs balance and analyse the future situation of water according to different scenarios. This approach allows to identify the most vulnerable sites to climatic and anthropogenic pressures. The estimation of the needs for drinking water and wastewater in the Setif Province has shown that these needs increase over time and happening when the offer is not able to cover the demand in a suitable way. It is acknowledged that there is a poor exploitation of water resources including underground resources, which translates into unmet demand in all sites of demand.

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Simulation of water supply and water demand in the valley of Seybouse (East Algeria)

Cited by 6 publications

References 4 publications

Salinity and modelling of the Annaba aquifer system, North-East of Algeria

Salinity and modelling of the Annaba aquifer system, North-East of Algeria

Investigating Water Demand under Different Irrigation Techniques Numerically in Al-Anbar Province - Iraq: A Case Study

Journal of Water and Land Development

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