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Assessment of groundwater quantity, quality, and associated health risk of the Tano river basin, Ghana

Acta Geochimica 2024年第2期43卷 325-353页

作者： Adwoba Kua-Manza Edjah bruce banoeng-yakubo Anthony Ewusi Enoch Sakyi-Yeboah David Saka Clara Turetta Giulio Cozzi David Atta-Peters Larry Pax Chegbeleh Water Resources Research Centre Ghana Atomic Energy CommissionAccraGhana Earth Science Department University of GhanaLegonAccraGhana Geological Engineering Department University of Mines and TechnologyTarkwaGhana Department of Statistics University of GhanaAccraLegonGhana Institute of Polar Sciences National Research Council of ItalyVeniceItaly

In the Tano River Basin,groundwater serves as a crucial resource;however,its quantity and quality with regard to trace elements and microbiological loadings remain poorly understood due to the lack of groundwater logs and limited water *** study presents a comprehensive analysis of the Tano River Basin,focusing on three key ***,it investigated the aquifer hydraulic parameters and the results showed signiﬁcant spatial variations in borehole depths,yields,transmissivity,hydraulic conductivity,and speciﬁc *** boreholes were concentrated in the northeastern and southeastern zones,while geological formations,particu-larly the Apollonian Formation,exhibit a strong inﬂuence on borehole *** study identiﬁed areas with high transmissivity and hydraulic conductivity in the southern and eastern regions,suggesting good groundwater avail-ability and suitability for sustainable water ***-ondly,the research investigated the groundwater quality and observed that the majority of borehole samples fall within WHO(Guidelines for Drinking-water Quality,Environmental Health Criteria,Geneva,2011,***://***)***,some samples have pH levels below the standards,although the groundwater generally qualiﬁes as *** study further explores hydrochemical facies and health risk assessment,highlighting the dominance of Ca–HCO3 water *** element analysis reveals minimal health risks from most elements,with chromium(Cr)as the primary contributor to chronic health ***,this study has provided a key insights into the Tano River Basin’s hydrogeology and associated health *** outcome of this research has contributed to the broader understanding of hydrogeologi-cal dynamics and the importance of managing groundwater resources sustainably in complex geological environments.

关键词： Groundwater Unsupervised machine learning technique Hydrochemistry Aquifer hydraulic parameter Health risk

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Characterization of the Hydrogeological Conditions of Some Portions of the Neoproterozoic Voltaian Supergroup in Northern Ghana

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Journal of Water Resource and Protection 2011年第12期3卷 861-875页

作者： Sandow Mark Yidana Aliou Abdul-Samed bruce banoeng-yakubo Prosper M. Nude 不详

Spatial variations in the essential aquifer parameters obtained through regular aquifer tests were evaluated for some aquifers of the Neoproterozoic sedimentary aquifers of the Voltaian Basin. Ordinary least squares regression models have also been developed to relate aquifer transmissivity and specific capacity, and well yield and transmissivity. These analyses suggest that in the northern parts of the Voltaian, aquifer transmissivity exists in a non-linear relationship with specific capacity and yield. This is in keeping with the findings of previous research in the southern part of the Voltaian, and deviates from the regular Dupuit-Thiem relationship between the two major aquifer parameters. Lithology specific models have been developed in this study. The exponent of the non-linear models appears to be related to the lithology, and tends to approach unity in the mudstone and siltstone aquifers, whilst manifesting obvious departures from nonlinearity amongst the sandstone aquifers. This study finds that the sandstone aquifers are the most prolific and offer themselves as the best lithologies for drilling successful wells in the area. Linear prediction maps suggest that the most prolific aquifers are located in the northern parts of the study area, where aquifer transmissivity, specific capacity, and well yield values are quite high due to enhanced secondary permeabilities. There has been no obvious relationship between the major aquifer parameters and static water levels, which are quite high in the middle and western sections of the study area. The hydrogeological properties of rocks within the Voltaian appear to be based on discrete structural entities which manifest high variability in the study area. Even within the same lithology, standard deviations are quite high in the data for all the aquifer parameters examined in this study.

关键词： Savelugu-Nanton Regression Specific Capacity Transmissivity Yield Kriging

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Hydrochemical and Isotopic Characterisation of Groundwaters in the Eastern Region of Ghana

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Journal of Water Resource and Protection 2010年第3期2卷 199-208页

作者： Samuel Y. Ganyaglo bruce banoeng-yakubo Shiloh Osae Samuel B. Dampare Joseph R. Fianko Mohammad A. H. Bhuiyan 不详

Major ions and stable isotopes of groundwater in the Cape Coast granitoid complex (G1) and Lower Birimian (LB) formations in the Eastern Region of Ghana were evaluated to establish the source of recharge to the groundwater system. Five major hydrochemical facies were identified in the various rocks in the study area. They are calcium-magnesium-bicarbonate, sodium bicarbonate, sodium chloride and calcium chloride waters and mixed or non dominant water type. Sodium chloride and calcium chloride waters dominate aqui-fers of the Cape Coast granitoid complex whereas calcium-magnesium-bicarbonate is the dominant hydro-chemical facies in the Lower Birimian aquifers. The most probable geochemical process responsible for the evolution of these hydrochemical facies is dissolution of minerals in the various rock types. Stable isotope composition of the groundwaters established that the recharge to the groundwater system is derived from rainfall.

关键词： Hydrochemistry Isotopes Groundwater Ghana

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