Spatial and temporal variability of groundwater quality of an Algerian aquifer: the case of Soummam Wadi

Abstract

Five-year monitoring of physicochemical parameters was performed with two campaigns in low and high water periods of the Lower Soummam catchment. Data from 18 wells were processed by multivariate statistical tools in order to identify the principal factors influencing groundwater chemistry. Two matrices of 14 and 8 physicochemical parameters with 18 groundwater samples collected in wells were obtained. The correlation matrix showed strong associations between nine variables: K + , Ca 2+ , Na + , SO 4 2− , Cl − , Mg 2+ , NO 2 − , Zn 2+ and Sr 2+. Principal component analysis and factor analysis showed that the cumulated variance of high and low water periods was of 83.19% and 78.55%, respectively. The variables assigned to the mineralization effect or to pollution indicators were presented by the factor analysis. The bivariate plots confirmed a mineralization model, ascribed to dissolution of geological materials, and to high levels of saline contamination attributed to leakages from sanitary systems. They also showed an increase "upstream to downstream" of the mineralization, visualization of temporal variations, and a dilution process identification of the natural mineralization during the recharge of the aquifer.

Impact des rejets urbains et industriels sur la qualité des eaux de la plaine de la Meboudja (Algérie)

“…Face au problème de la pollution, agriculteurs, entreprises et collectivités doivent se mobiliser pour trouver des solutions, à la fois correctives et préventives. Plusieurs études dans le monde ont analysé les effets des rejets industriels et urbains sur l'évolution de la qualité des eaux de surface ; on peut citer entre autres le cas de l'Inde (Gurunadha Rao et al 2001), de la France (Meybeck 1998), du Maroc (Azzaoui et al 2002) et de l'Algérie (Benhamiche et al 2014). L'étude du transit de ces polluants vers les eaux souterraines nécessite une bonne définition des relations nappe-rivière (Panagoulia et Dimou 1996, Belhassan et al 2010.…”

Particulate flow at the mouth of the Soummam watershed (Algeria)

“…According to previous works [11,15,16], the watershed is formed by the Oligocene on the left bank, crossed by lower Cretaceous formations, while the lower Miocene appears in the downstream part. Along the river, large alluvial terraces V C 2015 American Institute of Chemical Engineers lining usually the foot of the slopes are observed, except in the region of Sidi-Aich.…”

“…The transport of these sediments to the outflow occurs mainly during periods of severe flooding. To better understand and monitor the progress of suspended particles in streams in areas with humid Mediterranean climate, the work has focused on the Soumman Wadi, since it is considered as the third major river in Algeria .…”

Spatio-temporal variations in hydro-geochemistry of groundwater at rural, urban and industrial areas of Kanpur, India

“…1.5 mS cm −1 (Table 1). EC of ground water generally depends upon temperature, concentration and ions present in it (Agbalagba et al 2011;Benhamiche et al 2015). A high EC of water shows the occurrence of the high amount of dissolved inorganic ions (Harilal et al 2004).…”