Ellen Benyarku
University of Mines and Technology, Geological Engineering Department, Tarkwa, Ghana
Publications
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Research Article
Groundwater Evaluation and Borehole Failure in West Gonja District, Ghana: Insight from Geophysical and Lithological Analyses
Author(s): Ellen Benyarku* and Kristine Walraevens
The Voltaian Basin faces a persistent issue with borehole yields and unsuccessful boreholes due to its complex geological settings which affects groundwater accessibility in the areas that are underlain by this geological setting. West Gonja District, the study area faces issues of unsuccessful boreholes and low yields due to the poorly understood geology and the complexity of the Voltaian Basin. Recharge studies indicate sufficient replenishment, prompting a need to understand the causes of borehole failure. From the VES data, the results indicate that the geoelectric sections of the area is underlain by 3–5 layers: for Damongo Formation the topsoil/laterite (42.8–20704 Ωm), for the moist saprolite/mudrock/shale intercalated with sandstone (4.19– 824 Ωm), clay/intercalated sandstone (9.66–11087 Ωm) and the fresh basement (0.31–21000 &Om.. Read More»
