Browsing by Author "Ibrahim, K.O."

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    Delineating Groundwater Potential Zones in Parts of North Central Nigeria, Using Geographical Information System (GIS) and Analytical Hierarchical Process (AHP) Techniques
    (Nigerian Association of Hydrogeologist., 2024) Yusuf, M.A.; Arowolo, M.O.; Alao, J.O.; Abiye, T.A.; Ibrahim, K.O.; Oyeleke, T.A.; Omotoso, O.A.; Iheme, K.O.; Bakare, U.T.
    This project delineates groundwater potential zones in Kaiama, North-Central Nigeria, using Geographical Information System (GIS) and Analytical Hierarchy Process (AHP) techniques. Eight critical thematic layers, including geomorphology, lineament density, geology, slope, land use land cover (LULC), drainage density, elevation, and aspect, were integrated using the AHP method. The process was integrated into the GIS environment to generate a comprehensive groundwater potential map. The groundwater potential map obtained was classified as very high, high, average, low, and very low groundwater potential zones. The result showed that 15 %, 6 %, 13 %, 21 %, and 44 % of the study area fall under a very high, high, average, low, and very low groundwater potential zone, respectively. Vertical Electrical Sounding (VES) data from 20 locations across the study area were used to validate the accuracy of the delineated groundwater potential zones. The validation process employed Receiver Operating Characteristic (ROC) analysis, comparing the VES data with the generated groundwater potential map. The Area Under the Curve (AUC) was calculated to assess the model's predictive accuracy yielding a moderate value of 0.60. The findings from this research showed that the integration of GIS, Remote sensing (RS), and, the multi-criteria decisionmaking approach (MCDA) based on (AHP) techniques provide a reasonable framework for groundwater potential delineation and exploration.
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    AN EVALUATION OF GROUNDWATER AND SURFACE WATER RESOURCES IN ORLU AND ENVIRONS, SOUTH EASTERN NIGERIA
    (Published by Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria., 2018) Iheme, K.O.; Akudinobi, B. E. B.; Oyeleke, T. A.; Ibrahim, K.O.; Abubakar, H.O.; Usman, A. O.
    Most Nigerian rural settings suffer from non-availability of potable water. The difficulties in accessing water are great challenges which often results in water-borne diseases and other illnesses. This study evaluates the water resources in Orlu and environs with the aim of investigating the water quality in the study area. Eighteen water samples comprising nine groundwater and nine surface water were collected and analysed. The samples were then subjected to Atomic Absorption Spectroscopy for heavy metal analysis. The results show that most of the major ionic concentrations are within WHO standard. Lead, cadmium, and mercury in groundwater and cadmium, lead, and mercury in surface water are above WHO standard. Dominant water character in the study area was determined using the Piper Trilinear and Schoeller semi-logarithm diagrams. Sodium-chloridebicarbonate waters for surface water and calcium-sulphate waters for groundwater are the principal water types. The heavy metals concentration detected in the groundwater may be attributed to the indiscriminate disposal of wastes in the study area which generated leachate that found its way into the groundwater system while the heavy metals in the surface water may be attributed to the pollution from waste, fertilizer application, fungicides and pesticides used in the farming activities in the study area. It is highly recommended that drinking water in the study area should be treated to be free from contamination