Abstract
The purpose of this study was to develop an approach for constructing a three-dimensional hydrogeologic framework using borehole driller logs. The ultimate goal is to increase drilling success rates via a better understanding of the regional hydrogeologic framework in northern Ghana. Groundwater development has increased in northern Ghana, but drilling successful boreholes is difficult due to complex geology and limited aquifer characteristic information. An approach was developed to construct a three-dimensional hydrogeologic framework of the basin using 900 borehole logs from World Vision International’s Ghana Integrated Water, Sanitation, and Hygiene Project, located in northern Ghana. The study’s approach consists of: evaluating potential software programs; collecting borehole drilling logs; data QA/QC; data standardization and normalization; analysis for trends and correlations; and creation of a three-dimensional hydrogeologic framework and two-dimensional cross sections. This approach can be used and adapted by others working to provide groundwater in developing countries.
Highlights
This study develops an approach for a three-dimensional (3D) hydrogeologic framework that will contribute to a better understanding of the regional hydrogeological setting in the administrative Northern Region of Ghana, West Africa (Figure 1)
The purpose of this study is to develop an approach for constructing a 3D hydrogeologic framework using driller’s borehole logs
The borehole logs used in this study span from 2002 to 2010 and do not represent every borehole drilled by GI-WASH in northern areas, the 42% success rate may not be representative of the overall drilling success rate
Summary
This study develops an approach for a three-dimensional (3D) hydrogeologic framework that will contribute to a better understanding of the regional hydrogeological setting in the administrative Northern Region of Ghana, West Africa (Figure 1). Developing groundwater, is not straightforward in the Northern Region; complicated geological features cause difficulties for drilling successful boreholes and low drilling success rates are reported both anecdotally and in the literature [1]. The purpose of this study is to develop an approach for constructing a 3D hydrogeologic framework using driller’s borehole logs. The ultimate goal is increasing drilling success rates via a better understanding of the regional hydrogeologic framework. A better understanding of the hydrogeology contributes to sustainable groundwater development and management. This approach can be used and adapted by others working to provide groundwater, as there is a need for regional studies to contribute to management frameworks and trans boundary issues [2]
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