Browsing by Author "Ibeneche, Wisdom Iyke"

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    Hydrogeophysical and vulnerability index studies of parts of Umuahia, South-Eastern Nigeria
    (Federal University of Technology, Owerri, 2021-09) Ibeneche, Wisdom Iyke
    Groundwater potential, Contamination and vulnerability in urbanizing area are major concern and need attention. The present study involved the innovative methodology of integrating Electrical resistivity (Geophysical assessment) method using a Dar-Zarrouk parameterLongitudinal unit conductance S which is directly related to the aquifer protective capacity in vulnerability assessment and the use of DRSATIC model in characterization of the groundwater quality and vulnerability of the study area. The results of the interpreted electrical resistivity data helped to delineate the aquiferous horizons within the study area. The aquifer protective capacity (APC) rating obtained from second order parameter of the VES revealed the rating less than 0.1Mhos across the study area; indicating aquiferous zone with poor protective capacity to contamination migration. The DRASTIC model of vulnerability assessment of the study area provided further insight by helping to delineate areas with Low, moderate and high vulnerability. The result obtained, revealed that about 63% of the study area are moderately vulnerable to pollution contamination, 35% of the area are within the range of high vulnerability and only 2% falls within the range of low vulnerability. Moderate to high vulnerability tendency revealed in DRASTIC model index constituting about 98% of the study area is agreement with the result obtained from the longitudinal conductance values with the rating denoting poor aquifer overburden protective capacity across the study area.