Hydrogeology and hydrochemistry of a shallow alluvial aquifer, western Saudi Arabia

Al-Shaibani, Abdulaziz

doi:10.1007/s10040-007-0220-y

Cited by 84 publications

(27 citation statements)

References 7 publications

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“…Wadi Wajj aquifer in western Saudi Arabia is a porous aquifer underlain by a fractured weathered crystalline bedrock. Both aquifer layers transmit and store water [2]. Wadi Tharad in the western Saudi Arabia is another example.…”

Section: Nomenclaturementioning

confidence: 99%

“…K ru radial hydraulic conductivity of the unconfined aquifer (LT −1 ); K rf radial hydraulic conductivity of the fractured aquifer (LT −1 ); K zu vertical hydraulic conductivity of the unconfined aquifer (LT −1 ); K zf vertical hydraulic conductivity of the fractured aquifer (LT −1 ); K m hydraulic conductivity of matrix blocks (LT −1 ); S su unconfined aquifer specific storage (L −1 ); S sf fractured aquifer specific storage (L −1 ); S sm specific storage of matrix blocks (L −1 ); S y unconfined aquifer specific yield; s u , s f and s m drawdown in unconfined aquifer, fractured aquifer and matrix blocks, respectively (L); s Du , s Df and s Dm dimensionless drawdown in unconfined aquifer, fractured aquifer and matrix blocks, respectively; b 1 vertical distance from initial water table to the base of unconfined aquifer (L); b 2 vertical distance from initial water table to the base of fractured aquifer (L); b D dimensionless depth defined in Table 1; l vertical distance from initial water table to bottom of pumping well screen (L); l D dimensionless vertical distance defined in Table 1; r radial distance from pumping well (L); r radial distance from the center of the matrix block (L); r D dimensionless radial distance from pumping well defined in Table 1; r m radius of the spherical matrix block (L); r Dm dimensionless radius of the spherical matrix block defined in Table 1; h m thickness of the slab matrix block (L); h mD dimensionless thickness of the slab matrix block defined in Table 1 [22] in which the flow is supposed to be quasi two-dimensional. The low correlation between hydraulic parameters facilitates independent parameter estimation using automated parameter estimation algorithms.…”

Section: Nomenclaturementioning

confidence: 99%

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Semi-analytical solutions for flow to a well in an unconfined-fractured aquifer system

Sedghi

Samani

2015

Advances in Water Resources

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Section: Nomenclaturementioning

confidence: 99%

Section: Nomenclaturementioning

confidence: 99%

Semi-analytical solutions for flow to a well in an unconfined-fractured aquifer system

Sedghi

Samani

2015

Advances in Water Resources

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“…In Tunisia and other similar parts worldwide, common studies have been carried out to assess the geochemical characteristics of groundwater (Subba Rao et al 1998;Graniel et al 1999;Umar and Sami Ahmad 2000;Guler et al 2002;Guler and Thyne 2004;Elango et al 2003;Krishnakumar 2004;Jeevanandam et al 2006;Ravikumar et al 2009Ravikumar et al , 2010Aghazadeh and Mogaddam 2011;Hamzaoui-Azaza et al 2011, 2012. The development of groundwater resources in these arid and semi-arid regions is a sensitive issue, and careful management is required to avoid water-quality degradation (Al-Bassam and Al-Rumikhani 2003;Al-Shaibani 2008;Dassi et al 2005;Dassi 2010;Trabelsi et al 2005Trabelsi et al , 2007.…”

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confidence: 99%

Suitability assessment of deep groundwater for drinking and irrigation use in the Djeffara aquifers (Northern Gabes, south-eastern Tunisia)

et al. 2013

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The multilayered Djeffara aquifer system, south-eastern Tunisia, has been intensively used as a primary source to meet the growing needs of the various sectors (drinking, agricultural and industrial purposes). The analysis of groundwater chemical characteristics provides much important information useful in water resources management. Detailed knowledge of the geochemical evolution of groundwater and assessing the water quality status for special use are the main objective of any water monitoring study. An attempt has been made for the first time in this region to characterize aquifer behavior and appreciate the quality and/or the suitability of groundwater for drinking and irrigation purposes. In order to attend this objective, a total of 54 groundwater samples were collected and analyzed during January 2008 for the major cations (sodium, calcium, magnesium and potassium), anions (chloride, sulfate, bicarbonate), trace elements (boron, strontium and fluoride), and physicochemical parameters (temperature, pH, total dissolved salts and electrical conductivity). The evolution of chemical composition of groundwater from recharge areas to discharge areas is characterized by increasing sodium, chloride and sulfate contents as a result of leaching of evaporite rock. In this study, three distinct chemical trends in groundwater were identified. The major reactions responsible for the chemical evolution of groundwater in the investigated area fall into three categories: (1) calcite precipitation, (2) gypsum and halite dissolution, and (3) ion exchange. Based on the physicochemical analyses, irrigation quality parameters such as sodium absorption ratio (SAR), percentage of sodium, residual sodium carbonate, residual sodium bicarbonate, and permeability index (PI) were calculated. In addition, groundwater quality maps were elabortaed using the geographic information system to delineate spatial variation in physico-chemical characteristics of the groundwater samples. The integration of various dataset indicates that the groundwater of the Djeffara aquifers of the northern Gabes is generally very hard, brackish and high to very high saline and alkaline in nature. The water suitability for drinking and irrigation purposes was evaluated by comparing the values of different water quality parameters with World Health Organization (WHO) guideline values for drinking water. Piper trilinear diagram was constructed to identify groundwater groups where the relative major anionic and cationic concentrations are expressed in percentage of the milliequivalent per liter (meq/l), and it was demonstrated that the majority of the samples belongs to SO 4 -Cl-Ca-Na, Cl-SO 4 -Na-Ca and Na-Cl hydrochemical facies. As a whole, all the analyzed waters from this groundwater have revealed that this water is unsuitable for drinking purposes when comparing to the drinking water standards. Salinity, high electric conductivity, sodium adsorption ratio and sodium percentages indicate that most of the groundwater samples are inappropriate for ir...

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“…There are three main mechanisms of inclusion of Cl − ions in water: atmospheric contribution through rain, rock weathering of silicate minerals and rocks, and anthropogenic pollution (SINGH et al, 2004;JALALI, 2007;AL-SHAIBANI, 2008).…”

Section: Larger Anionsmentioning

confidence: 99%

Mechanisms Controlling Surface Water Quality in the Cobras River Sub-Basin, Northeastern Brazil

et al. 2017

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-Stream water quality is dependent on many factors, including the source and quantity of the streamflow and the types of geology and soil along the path of the stream. This study aims to evaluate the origin and the mechanisms controlling the input of ions that effect surface water quality in the sub-basin of the Rio das Cobras, Rio Grande do Norte state, Northeastern Brazil. Thirteen ponds were identified for study: three in the main river and ten in the tributaries between, thus covering the whole area and lithology of the sub-basin. The samples were collected at two different times (late dry and rainy periods) in the hydrological years 2009 and 2010, equating to total of four collection times. We analyzed the spatial and seasonal behavior of water quality in the sub-basin, using Piper diagrams, and analyzed the source of the ions using Guibbs diagram and molar ratios. With respect to ions, we found that water predominate in 82% sodium and 76% bicarbonate water (cations and anions, respectively). The main salinity control mechanism was related to the interaction of the colloidal particles (minerals and organic sediment) with the ions dissolved in water. Based on the analysis of nitrates and nitrites there was no evidence of contamination from anthropogenic sources.Keywords: Desertification. Semiarid. Salinity. MECANISMOS CONTROLADORES DA QUALIDADE DAS ÁGUAS SUPERFICIAIS NA SUB-BACIA HIDROGRÁFICA DO RIO DAS COBRAS DO NORDESTE BRASILEIRORESUMO -A qualidade da água de um rio dependente de vários fatores, incluindo a origem e quantidade de escoamento e a formação geologia dos solos ao longo do fluxo. Objetivou-se avaliar a origem e os mecanismos controladores da entrada dos íons e, consequentemente, da qualidade da água na sub-bacia do rio das Cobras, RN. Foram selecionados 13 açudes, sendo 3 no rio principal e 10 entre os afluentes, abrangendo toda a área e litologias da sub-bacia. As amostras foram coletadas em duas épocas distintas (final dos períodos secos e chuvosos) nos anos hidrológicos de 2009 e 2010, totalizando 4 momentos de coleta. Analisou-se o comportamento espacial e sazonal da qualidade da água na sub-bacia utilizando o diagrama de Piper e a origem dos íons pelo diagrama de Gibbs e razão molar. Constatou-se que em relação aos íons, predominam águas sódicas em 82% e águas bicarbonatadas 76% (cátions e ânions), respectivamente. Os resultados obtidos sugerem que o principal mecanismo controlador da salindiade está relacionado a interação das partículas coloidais (sedimentos orgânicos e minerais) com os íons dissolvidos na água. Também não se observou indícios de contaminação antrópica na área, tendo por base a análise de nitratos e nitritos.Palavras-chave: Desertificação. Semiárido. Salinidade.

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Hydrogeology and hydrochemistry of a shallow alluvial aquifer, western Saudi Arabia

Cited by 84 publications

References 7 publications

Semi-analytical solutions for flow to a well in an unconfined-fractured aquifer system

Semi-analytical solutions for flow to a well in an unconfined-fractured aquifer system

Suitability assessment of deep groundwater for drinking and irrigation use in the Djeffara aquifers (Northern Gabes, south-eastern Tunisia)

Mechanisms Controlling Surface Water Quality in the Cobras River Sub-Basin, Northeastern Brazil

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