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VOL. 8, ISSUE 2 (2023)
Appraisal of vulnerability / protective capacity of overburden aquifers at Lodu - Imenyi and its environs in Abia state, Nigeria
Authors
Adindu Ruth U, Chigbu Timothy O
Abstract
This paper evaluated the
Protective Capacity of aquifers at Lodu- Imeyi and its environs in Bende area
of Abia State, Nigeria. It examined the extent of the aquifers’ vulnerability
to contaminate fluid migration on the basis of longitudinal unit conductance
values. Fifteen (15) Schlumberger depth sounding data from the area were
interpreted to delineate the aquifers. Aquifer resistivity ranged from (200 to
2800) Wm with maximum value at
Nkpa and Okoitem. Aquifer thickness in this area (68 – 102) m indicated high
aquifer storability and good groundwater yield. Depth to Aquifer is however
low, ranging from 22 m to 58 m implying shallow aquifers whereas, high
transmissivity values (10,000 – 200,000) Wm2 were delineated across the area, demonstrating good to
high groundwater potentials. Areas indicating high groundwater potentials (Ozuitem,
Nkpa, Alayi and Igbere, Okoitem) also indicated poor – weak protective
capacities (0.05 – 0.15) mhos. This signifies insufficient conductive materials
in their litho-units and also the possibility of groundwater contamination. But
Lodu, Akoli Imenyi and Elugwumba indicated moderate – good protective capacity
(0.2 – 0.75) mhos, signifying impermeability of the aquifer overburden
materials to fluid migration. Therefore, it is inferred that the aquifer
overburden rock materials in this region is composed of sufficient shale
materials that could effectively offer good protection to the aquifers from
surface contamination. However, further investigations are recommended to
ascertain this claim.
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Pages:7-11
How to cite this article:
Adindu Ruth U, Chigbu Timothy O "Appraisal of vulnerability / protective capacity of overburden aquifers at Lodu - Imenyi and its environs in Abia state, Nigeria". International Journal of Advanced Science and Research, Vol 8, Issue 2, 2023, Pages 7-11
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