MAPPING GROUNDWATER AQUIFERS USING DOWSING, SLINGRAM ELECTROMAGNETIC SURVEY METHOD AND VERTICAL ELECTRICAL SOUNDING JOINTLY IN THE GRANITE ROCK FORMATION: A CASE OF MATSHETSHE RURAL AREA IN ZIMBABWE

A survey was conducted in Matshetshe area, under the Filabusi district of Zimbabwe, to find groundwater by jointly using the Slingram electromagnetic survey method and dowsing method in traversing. The two methods independently managed to locate the same positions of high groundwater potential. The vertical electrical sounding was then done in the anomalous positions. This was to provide the depth of the weathered layers above the bedrock. Traversing results show that dowsing, an ancient traditional method of exploration, can be used jointly with the modern traversing geophysical methods in finding groundwater. The study revealed, for more accurate results, that the three methods must be analyzed jointly to overcome the vulnerability of errors linked to a single method. The information from the three methods was used to pinpoint prospective drilling sites for groundwater with a high degree of accuracy.