By A.S Ogungbe, J.A Olowofela, O.O Oresanya, A.A Alabi
Geophysical investigation involving the use of electrical resistivity was carried out at LASU, Ojo with a view to mapping out its unconfined aquiferous zone. A total of eight vertical electrical soundings (VES) were taken and the H and K curves were used in matching the graphs. The results acquired from the survey were subjected to iteration software (win Resist) which delineated four geo-electric layers namely: topsoil, sand, sandy clay and clay. The results observed in VES1-4(AA) and VES 5-8(AA) establish that unconfined aquifer is between the thickness of 0.5m-2.9m with resistivity ranging from 102.1-322.9 in both geo-electric sections.
Key Words : Unconfined Aquifer, groundwater, water table, artesian well.
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