GEOPHYSICAL MAPPING AND ASSESSMENT OF GROUNDWATER POTENTIALS FOR SUSTAINABLE DEVELOPMENT IN UYO, AKWA IBOM STATE
Keywords:
Aquifer Thickness, Aquifer Resistivity, Anisotropy, Hydraulic Conductivity, Vertical Electrical Sounding (VES) and Transmissivity.Abstract
Spatial variation of surface water has made groundwater the sustainable means of potable water
supply, hence the need to delineate them into their bearing capacity. In this study geophysical
evaluation of the groundwater is aimed at delineating the aquiferous units within the study area
into their groundwater potentials zones. The Schlumberger Automatic Analysis (SAA) version
0.92 was used to analyze the data in order to determine their depths, thickness, resistivity and the
potential depths of boreholes at various locations chosen arbitrarily within the study area.
Seventeen (17) locations were probed. The VES curve types found within the study area include
H, K and A, but it is predominantly made up of K type of curve. Results obtained showed three
to six geoelectric layers of the soundings. The aquifer depths vary from 42 to 160m; the aquifer
thickness varies from 33 to 153m. The hydraulic conductivities range from 0.0556cm/s to
0.4545cm/s while the transmissivity range from 2.5754cm2/s to 38.6325cm2/s. The final
groundwater potential map shows that the study area has reasonable amount of groundwater
reserve for sustainable groundwater infrastructural development ranging from low to high
potentials
