New approach of interpretive method of hydrogeological prospecting and electrical resistivity geophysics data: improvement of water drilling siting techniques in the field of crystalline soils of Burkina Faso (West Africa)

^1,2Césard Millogo, Samuel Nakolendoussé^2*, Sâga Sawadogo², and Julien Nikièma²

¹University of Ouahigouya Burkina Faso, 01 P.M.B 346 Ouahigouya 01, Burkina Faso.

^2*2University Joseph Ki-Zerbo, Department of earth science, Ouagadougou, Burkina Faso, 01 P.M.B 738, Ouagadougou 01, Burkina Faso.

Accepted July 10, 2019

This work is a contribution to the improvement of bore holes siting techniques through a new interpretative approach to hydrogeological and geophysical electrical resistivity prospecting data. Its objective is to make drinking water accessible to all through the reduction of negative drilling rates, which is very recurrent in the crystalline terrains of Burkina Faso.The main focus is on geophysical prospecting using the electrical resistivity method, which is the least expensive and most widely used in Burkina Faso and the West African sub-region. This work resulted in the construction of a framework for the interpretation of hydrogeological and geophysical prospecting data on electrical resistivity. The results obtained are very convincing despite a few cases of failure certainly related to the problem of ground water recharge.

Key words: Basement acquifers, flow, granitoïds, schists, alteration, geophysical surveys and geoelectric surveys.

Full Text PDF (810KB)