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A Comparative Assessment of Vulnerability of the Oban Massif Aquifer System, SE-Nigeria, Using DRASTIC, GOD and AVI Models

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2017

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Author NameUniversity of Author
Abstract (2. Language): 
The vulnerability of the aquifers of the crystalline basement Oban Massif to contamination was assessed using three different assessment models: DRASTIC, GOD and AVI. The results from computations of the models shows three vulnerability zones as indicated by DRASTIC, while GOD and AVI models identify two zones each. DRASTIC and AVI indicate a subjective coincidence of the defined vulnerability zones. The AVI model fits as a quick reconnaissance model satisfactory for vulnerability assessment within the study area, with less hydrological data requirement. Sensitivity analysis shows that the depth to groundwater is the major parameter that determines probable contamination.
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International Journal of Science and Engineering Investigations, Volume 6, Issue 68, September 2017 45
www.IJSEI.com Paper ID: 66817-06
ISSN: 2251-8843
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