Hydrogeophysical assessment of aquifers in the Upper Denkyira East and West Districts of Ghana has been carried out for groundwater potential and protective capacity of the overburden rocks determination. The data for the study were obtained from the Regional office of Community Water and Sanitation Agency (CWSA), Cape Coast. A total of thirty-seven VES probed using a Schlumberger array with maximum current electrode spacing (AB/2) of 100 m at each point using the Abeam Terameter was used. The data were interpreted using the partial curve matching and WINRESIST computer iteration program techniques. The thickness and resistivities of the various overburden layers, basement resistivity, reflection coefficient and longitudinal conductance were used for the assessment of the groundwater potential and the protective capability of the overburden layers. The study revealed three-to-six layers with an average of four (4) layers including laterite (0.34–3.57 m); clay (0.64–8.84 m); sandy-clay (0.67–27.09 m) and slightly-to-highly weathered bedrock which includes phyllites and granite (3.09–86.89 m) that show high level of heterogeneity of electrical resistivity of the geologic materials within the study area. The weathered layers serve as the aquiferous zones. About 21.6%, 62.2%, 2.7% and 13.5% showed high, medium, low and very low potential for groundwater, respectively, with higher groundwater potentials at the western and south-eastern corner of the study area underlain by the Birimian and Tarkwaian formations, respectively, indicating that the two formations have similar groundwater potentials in the study area. The lowest groundwater potential was observed at the point underlain by the granitic intrusion. The assessment of the protective capacity of the aquifer showed very good (5%), good (27%), moderate (19%), weak (22%) and poor (27%) indicating that the study area is overlain mostly by materials of different protective capacities. This study presents information on the aquifer protective capacity evaluation by using geophysical technique and it has revealed that the Birimian formation has a good aquifer protective capacity than the Tarkwaian formation and has also confirmed the effectiveness of using geophysical techniques in ground investigation.

已经对加纳上登基拉东区和西区的含水层进行了水文地球物理评估，以确定地下水潜力和上覆岩层的保护能力。该研究的数据来自海岸角社区水和卫生局 (CWSA) 的区域办公室。使用阿波姆温度计在每个点使用 Schlumberger 阵列探测的总共 37 个 VES，最大电流电极间距 (AB/2) 为 100 m。使用局部曲线匹配和 WINRESIST 计算机迭代程序技术解释数据。各覆盖层的厚度和电阻率、基底电阻率、反射系数和纵向电导用于评估地下水潜力和覆盖层的保护能力。研究揭示了三到六层，平均四 (4) 层，包括红土 (0.34–3.57 m)；粘土（0.64–8.84 m）；砂质粘土 (0.67–27.09 m) 和轻度至高度风化的基岩，包括千枚岩和花岗岩 (3.09–86.89 m)，表明研究区域内地质材料的电阻率具有高度的不均匀性。风化层作为含水层。大约 21.6%、62.2%、2.7% 和 13.5% 的地下水潜力分别为高、中、低和极低，研究区西部和东南角的地下水潜力较高，位于 Birimian 和 Tarkwaian 地层下方, 分别表明研究区两个地层具有相似的地下水位。在花岗岩侵入体下方的点处观察到最低的地下水潜力。含水层保护能力评估显示非常好（5%）、好（27%）、中等（19%）、弱（22%）和差（27%）表明研究区主要被物质覆盖不同的保护能力。本研究提供了利用地球物理技术评价含水层保护能力的信息，揭示了Birimian 地层比Tarkwaian 地层具有更好的含水层保护能力，也证实了地球物理技术在地面调查中的有效性。弱 (22%) 和差 (27%) 表明研究区域主要被不同保护能力的材料覆盖。本研究提供了利用地球物理技术评价含水层保护能力的信息，揭示了Birimian 地层比Tarkwaian 地层具有更好的含水层保护能力，也证实了地球物理技术在地面调查中的有效性。弱 (22%) 和差 (27%) 表明研究区域主要被不同保护能力的材料覆盖。本研究提供了利用地球物理技术评价含水层保护能力的信息，揭示了Birimian 地层比Tarkwaian 地层具有更好的含水层保护能力，也证实了地球物理技术在地面调查中的有效性。