Fenta Mulugeta C, Anteneh Zelalem L, Szanyi János, Walker David
University of Szeged, Department of Mineralogy, Geochemistry and Petrology, Egyetem street 2, 6722, Szeged, Hungary.
Bahir Dar University, School of Earth Science, P.O. Box 79, Bahir Dar, Ethiopia.
Data Brief. 2020 Jun 18;31:105877. doi: 10.1016/j.dib.2020.105877. eCollection 2020 Aug.
The groundwater of volcanic aquifers, dissected by various structures and affected by several volcanic eruption events, varies in quality. A large number of rural people depend on shallow aquifers tapped by shallow hand wells and springs. On the other hand, the urban population is dependant on deep aquifers using drilled boreholes. The location of springs, shallow hand-dug wells and boreholes inside or close to farmlands, and the advancement of irrigation water use from groundwater by the government entail the assessment of groundwater quality. Therefore, the focus of the present study is to determine the quality and suitability of groundwater around Dangila Town, Northwest Ethiopia, for drinking and irrigation uses. The water quality assessment was conducted by collecting groundwater samples from 14 shallow hand-dug wells, 4 springs, and 7 deep boreholes then analysing for different physical and chemical parameters. A total of 25 selected groundwater samples from shallow and deep aquifers were analysed in a laboratory for physical and chemical parameters. The physical parameters measured both in the field and the laboratory included pH, electrical conductivity (EC) and total dissolved solids (TDS). The chemical parameters analysed in the laboratory comprised cations of calcium (Ca), magnesium (Mg), sodium (Na), potassium ( ), Iron (Fe), manganese (Mn) and anions of bicarbonate (HCO ), sulfate (SO ), carbonate (CO ), chlorine (Cl), nitrate (NO ), fluoride (F), and boron (B). Based on the laboratory results, the variation in groundwater facies, and major cation and anion sources were determined. Furthermore, the groundwater quality for human consumption was assessed and sodium adsorption ratio (SAR), Na%, and the residual sodium carbonate (RSC) values, which are crucial to determine the overall groundwater quality for irrigational uses, were calculated. Detailed interpretations of the data have been presented in the paper entitled "Hydrogeological framework of the volcanic aquifers and groundwater quality in Dangila Town and the surrounding area, Northwest Ethiopia" [1]. The presented dataset demonstrates the necessity of water quality assessments that would be helpful to water sectors, government, and policymakers for sustainable groundwater management.
火山含水层的地下水受到各种构造的切割，并受到多次火山喷发事件的影响，水质各不相同。大量农村人口依赖浅手挖井和泉水开采的浅层含水层。另一方面，城市人口则依赖通过钻井开采的深层含水层。泉水、浅手挖井和钻孔位于农田内部或附近，以及政府推进地下水灌溉用水，都需要对地下水质量进行评估。因此，本研究的重点是确定埃塞俄比亚西北部丹吉拉镇周围地下水用于饮用和灌溉的质量及适用性。通过从14口浅手挖井、4处泉水和7口深钻孔采集地下水样本，然后分析不同的物理和化学参数，进行了水质评估。总共从浅层和深层含水层选取了25个地下水样本，在实验室分析其物理和化学参数。在野外和实验室测量的物理参数包括pH值、电导率（EC）和总溶解固体（TDS）。在实验室分析的化学参数包括钙（Ca）、镁（Mg）、钠（Na）、钾（ ）、铁（Fe）、锰（Mn）等阳离子以及碳酸氢根（HCO ）、硫酸根（SO ）、碳酸根（CO ）、氯（Cl）、硝酸根（NO ）、氟（F）和硼（B）等阴离子。根据实验室结果，确定了地下水相的变化以及主要阳离子和阴离子的来源。此外，评估了人类消费的地下水质量，并计算了钠吸附率（SAR）、钠百分比（Na%）和残留碳酸钠（RSC）值，这些对于确定灌溉用水的总体地下水质量至关重要。题为《埃塞俄比亚西北部丹吉拉镇及周边地区火山含水层的水文地质框架与地下水质量》的论文[1]中给出了数据的详细解释。所呈现的数据集表明了水质评估的必要性，这将有助于水部门、政府和政策制定者进行可持续的地下水管理。
