+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

An appraisal of subsurface geology and groundwater resources of Owerri and environs based on electrical resistivity survey and borehole data evaluation



An appraisal of subsurface geology and groundwater resources of Owerri and environs based on electrical resistivity survey and borehole data evaluation



Environmental Monitoring and Assessment 70(3): 303-321



The research was aimed at determining the depth to the water table, aquifer thickness and subsurface geology of the study area thus revealing its groundwater distribution as well as its potential as a substitute to the surface water resources. Vertical electrical soundings were carried out in the study area with maximum electrode spread. The Schlumberger electrode configuration technique was adopted. VES data were processed using Schlumberger analysis package. Lithologic logs of already existing boreholes in the study area were collected, evaluated and comparison were carried out. The results reveal alternating layers of sands, sandstones, gravel and clay. The lithologic logs revealed that the study area is underlain by coastal sands (Benin formation). The water table varies from 10-64 m and thickness of the aquifer ranges from 20-80 m. Results show that the study area is underlain by a thick extensive aquifer that has a transmissivity of 2.8 x 10(-2) m2 s(-1) to 3.3 x 10(-1) m2 s(-1) and storativity 1.44 x 10(-4) to 1.68 x 10(-3) m s(-1) values. The specific yield is about 0.31. The sandy component of the study area forms more than 90% of the sequence, therefore the permeability, the transmissivity and the storage coefficient are high with an excellent source of groundwater resources.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003640009

Download citation: RISBibTeXText

PMID: 11554487

DOI: 10.1023/a:1010783426570


Related references

Electrical resistivity survey for groundwater investigations and shallow subsurface evaluation of the basaltic-greenstone formation of the urban Bulawayo aquifer. Physics and Chemistry of the Earth, Parts A/B/C 50-52(none), 2012

2D data modelling by electrical resistivity tomography for complex subsurface geology. Geophysical Prospecting 54(2): 121-133, 2006

Aquifer transmissivity from surface geo-electrical data A case study of owerri and environs, southeastern Nigeria. Journal of the Geological Society of India 80(1): 123-128, 2012

Evaluation of groundwater and soil pollution in a landfill area using electrical resistivity imaging survey. Environmental Management 28(5): 655-663, 2001

Evaluation of known-boundary and resistivity constraints for improving cross-borehole DC electrical resistivity imaging of discrete fractures. GEOPHYSICS 78(3): D115-D127, 2013

Electrode configurations for Earth resistivity survey of subsurface geology. The Journal of the Alabama Academy of Science 47(3): 142, 1976

Correlation of vertical electrical sounding and electrical borehole log data for groundwater exploration. Geophysical Prospecting 58.3, 2010

The competing impacts of geology and groundwater on electrical resistivity around Wrightsville Beach, NC. Continental Shelf Research 31.7-8, 2011

The impact of urbanization and protection of water resources in Owerri and environs SE, Nigeria. Environmental Monitoring and Assessment 58(3): 337-348, 1999

The impact of urbanization and protection of water resources in Owerri and environs SE, Nigeria. Proceedings of the Joint Meeting of the: ress of the International Association of Hydrologists and the Annual Meeting of the American Institute of Hydrologists. 28; Pages 719-726. 1998., 1998

Electrical resistivity investigations in clarifying the subsurface geological sequences and groundwater conditions of Abu Mina basin (northwestern coastal zone, Egypt). Proceedings The Hydrology of areas of low precipitation: 49-354, 1979

Fractured Zone Type Landslide and Electrical Resistivity Survey; 2, Information obtained from electrical resistivity survey. Bulletin of the Disaster Prevention Research Institute 21, Part 2(Pages 137-152, 1971

Electrical resistivity survey for groundwater exploration; a critical review. Annual Convention and National Seminar on Hydrology 6: V, 1987

Determination of lithology and groundwater quality using electrical resistivity survey. International Journal of Agriculture and Biology 9(1): 143-146, 2007

Rock classification based on resistivity patterns in electrical borehole wall images. Journal of Geophysics = Zeitschrift für Geophysik and Engineering 4(2): 171-183, 2007