Groundwater Level Distribution in Bonny Local Government Area, Rivers State, Nigeria

E.B. Jumbo¹ , E.D. Uko² , I. Tamunobereton-ari³

Section:Research Paper, Product Type: Journal-Paper
Vol.9 , Issue.5 , pp.5-15, Oct-2021

Online published on Oct 31, 2021

Copyright © E.B. Jumbo, E.D. Uko, I. Tamunobereton-ari . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
This research involves the analysis of the spatial distribution of groundwater Level within the Bonny Metropolis, in Rivers State, Nigeria. The study area is located between latitudes 4?28N and longitude 7?10E. The GPS (global positioning system) was used to take the various coordinates of the site location. Ten Vertical Electrical Sounding was carried out with an ABEM Terrameter 300 SAS B in order to determine the groundwater level distribution using Schlumberger configuration. The data acquired was analyzed and interpreted with the aid of IP2Win and surfer 8 software. Topsoil, clay and sandy formations were encountered and the result from the geoelectric section reveals three to five layers with HKH, QK, HQQ, H, KH, HAA, QHA and QAA curve types. The resistivity values for the first layer ranges from 1.73?m to 863.6?m, the second layer ranges from 0.89?m to 788.3?m, the highest resistivity value was observed in the third layer with resistivity ranging from 0.5 to 1,222,355?m, the fourth layer ranges from 1.84 to 9,203?m and the fifth layer ranges from 62.9 to 12,464?m with an infinite thickness. The overburden thickness across the area falls between 5m to 100m. The water level depth distribution of the area varies between 0.2m to 2.6m and the direction of the water flow is towards the central part of the study area while the highest value of the borehole depth distribution was observed at North-Eastern part and North-Western part with a range of 40 to 57ft. The study will provide information on the variation of water table depths for proper water resources management across the study area.

Key-Words / Index Term :
Groundwater Level, Vertical Electrical Sounding, Aquifer, Niger Delta, Nigeria

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