PDF(Pubmed)
Abstract：
The ecosystem and economy\'s reliance on clean water is influenced by various factors such as geology, topography, soil types, activities, and the presence of plants and animals. The Ghana Water Company is encountering difficulties in delivering water to consumers in the Ashanti Region due to the shortage of surface water resources, leading to water rationing in the area. Furthermore, poor waste disposal practices, illegal mining, use of fertilizers, and industrial activities have resulted in surface and groundwater source damage. Therefore, there is a need to implement a reliable, simple, and timely method to assess groundwater quality. This study aims to employ GIS and RS techniques to evaluate groundwater quality and potential in the Ashanti Region, Ghana. The Water Quality Index (WQI) was estimated using pH, Total Dissolve Solid (TDS), Chloride, Total Hardness (TH), Nitrate, Temperature, Turbidity, Iron, and Electrical Conductivity (EC). The study then used the WQI distribution to conduct a groundwater potential analysis to identify suitable areas for borehole placement. Digital thematic layers and maps were developed to expose the spatial distribution of water quality parameters, enabling the identification of groundwater pollution control and remedial measures. The study estimated the region\'s groundwater potential using an integrated GIS and Analytical Hierarchical Process (AHP) technique, grouping under excellent, good, fair, and poor potential. The WQI in the Ashanti Region ranged from 5.208 to 134.232, with 32.252% of the study area having an excellent WQI and 60.168% of the study area having a good WQI. Poor water quality covered 7.550% of the study area. The results showed that the GIS-based AHP approach accurately mapped the spatial distribution of WQI and Groundwater Potential Zones (GWPZ). This information is helpful to planners in water resource management in groundwater exploration and future planning. Policymakers and stakeholders must ensure that groundwater sources are protected from pollution.
摘要：
生态系统和经济对清洁水的依赖受到地质等各种因素的影响，地形,土壤类型,活动,植物和动物的存在。由于地表水资源短缺,加纳水务公司在向阿沙蒂地区的消费者供水方面遇到困难,导致该地区的水配给。此外，糟糕的废物处理做法，非法采矿,使用肥料，和工业活动导致了地表水和地下水源的破坏。因此,有必要实现一个可靠的，简单,和及时评估地下水质量的方法。本研究旨在利用GIS和RS技术来评估阿沙蒂地区的地下水质量和潜力，加纳。水质指数(WQI)是使用pH值估算的，总溶解固体(TDS),氯化物,总硬度(TH),硝酸盐,温度,浊度,熨斗,和电导率（EC）。然后，该研究使用WQI分布进行地下水潜力分析，以确定适合钻孔放置的区域。开发了数字主题层和地图，以揭示水质参数的空间分布，能够确定地下水污染控制和补救措施。该研究使用集成的GIS和层次分析法（AHP）技术估算了该地区的地下水潜力，分组下优秀，不错,公平,潜力差。Ashanti地区的WQI范围为5.208至134.232，其中32.252％的研究区域具有良好的WQI，60.168％的研究区域具有良好的WQI。不良水质覆盖了研究区域的7.550％。结果表明，基于GIS的AHP方法准确地绘制了WQI和地下水潜力区（GWPZ）的空间分布图。这些信息对地下水勘探和未来规划中水资源管理的规划者很有帮助。政策制定者和利益相关者必须确保地下水源免受污染。
