Browsing by Author "Abubakar, H.O."
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Item Characterizing Groundwater Potentials in parts of the Basement Complex of Nigeria using GIS and Remote Sensing.(Journal of Sustainable Water Resources Management, 2023) Abubakar, H.O.; Ige, O. O.; Olatunji, S.; Iheme, K.O.Groundwater prospect in parts of southwestern Nigeria was delineated by inferring the subsurface models from the responses of remote sensing and GIS data. In characterizing the area, both primary and secondary data were used. The primary data include landsat8 OLI and ASTER Digital Elevation Model, while the secondary data includes geology, soil, and topography maps of the area. Hence, thematic maps of potentials and lineament density, and land cover/use maps for the area were derived from the landsat8 OLI/TRS image. Thus, the area was characterized as follows: very low, low, moderate, high, and very high potentiality that covered 1.4 km2(0.59%), 72.18 km2(9.59%), 372.3 km2(49.44%),272.12 km2(36.14%), and 35km2(4.64%), respectively. The western part of the area is dominated by very low to low potential, while the southern part of the area is dominated by high to very high potential. Hence, low and moderate potentials occupy the highest landmass (59.03%) in the area. In conclusion, the basement complex terrain in question has a moderately low aquifer capability.Item 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