Groundwater investigation and characterisation in Marigat area, Baringo county, using vertical electrical sounding resistivity surveys
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Date
2014-07-31
Authors
Cherop, Komen Hezekiah
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Abstract
Resistivity surveys will be carried out to investigate groundwater potentials and to characterise
water bearing layer in Marigat area, Baringo County. This study aims at obtaining useful
information on the rock type and fault lines that are conduits to groundwater within the area
based on the response of the earth to the flow of regulated input current source. The information
obtained will constitutes a knowledge base which is fundamental to water resource assessment
and decision making in the study area. In this study, Vertical electrical sounding (VES) method
will be applied using Schlumberger electrode configuration. About 60 VES points will be probed
along ten traverses within an area of 10 km2 using an ABEM SAS 300 C terameter and the field
stations will be positioned using Global positioning system (GPS) device. The field data will be
analysed using Winsev software and the information obtained interpreted in order to define the
aquifer distribution and to delineate the lithological changes of different layers. The interpreted
results of YES will furnish information of resistivities and thickness of different layers at the
sounding point. This study will help in selecting a possible site that boreholes can be drilled for
potable and sustainable water supply and reduce the risks of drilling dry boreholes.