ABSTRACT
Groundwater potential studies were carried out across Nabor Hwoll and its environs North Central Nigeria using integrated geophysical, remote sensing techniques (RST) and geographical information system (GIS) method to generate thematic maps that included elevation, drainage, lineaments and vegetation index in order to characterize the attributes of groundwater occurrence across the area. The results revealed that the lineament system is mainly rectilinear with major trends of NNE–SSW and NE–SW on the biotite granite, NW–SE and NE–SW on porphyritic granite. The discharge zones in the area are the lowland terrains underlain by gnessic and granitic rocks. Conversely, the recharge areas are the high-lying terrains characterized by higher fracture density and underlain by porphyritic granitic rocks. Landform is another crucial factor that guides groundwater distribution in the study area. Similarly, variably directional discontinuities that are related to rock contacts are equally laden with groundwater. Low lineament densities were found in the central and southern part of the study area, while high lineament densities were obtained in the north and east extremes, and southeastern parts of the study area. Groundwater yield in the study area is expected to be high in low lineament density areas and low in areas of high lineament density. Generally, groundwater flows to the direction of decreasing head. The flow direction however, conformed to the dominant trend of structures (NE-SW, NW-SE & N-S) implying that the flow pattern is structurally controlled in the area.
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