Journal of Hydrogeology & Hydrologic EngineeringISSN: 2325-9647

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Research Article, J Hydrogeol Hydrol Eng Vol: 5 Issue: 3

Estimating the Hydraulic Conductivity of the Ajali Sandstone in the Udi Area of South Eastern Nigeria from Pumping Test and Grain Size Based Empirical Analysis

Onwe IM1*, Akudinobi BEB2 and Aghamelu OP1
1Department of Physics, Geology and Geophysics, Federal University Ndufu Alike Ikwo, Nigeria
2Department of Geological Science, Nnamdi Azikiwe University, Awka, Nigeria
Corresponding author : Onwe IM
Department of Physics, Geology and Geophysics, Federal University Ndufu Alike Ikwo, Nigeria
Tel: +2348068439238
E-mail: [email protected]
Received: June 07, 2016 Accepted: August 25, 2016 Published: August 31, 2016
Citation:Onwe IM, Akudinobi BEB, Aghamelu OP (2016) Estimating the Hydraulic Conductivity of the Ajali Sandstone in the Udi Area of South Eastern Nigeria from Pumping Test and Grain Size Based Empirical Analysis. J Hydrogeol Hydrol Eng 5:3. doi:10.4172/2325-9647.1000139

Abstract

The Maastrichtian Ajali Sandstone in the Udi area of south eastern Nigeria has been assessed by means of pumping test and grain size based empirical analyses, to estimate the hydraulic conductivity of the aquiferous formation. Hydraulic conductivity (K) values from pumping test ranged from 10.41 to 17.85 m/day while estimations from grain size based empirical methods of the United States Bureau of Reclamation (USBR), Pavchich, Slichter and others gave (K) values that ranged from 5.24 to 39.95 m/ day. Statistical correlation analysis shows that a strong positive correlation (r=0.96) exist between K values from pumping test and those from grain size based empirical methods. Study reveals that grain size based Pavchich method (K=14.74 - 24.92 m/day) could adequately replace pumping test for the determination of the hydraulic conductivity of a homogeneous and isotropic aquiferous formation like Ajali Sandstone.

Keywords: Hydraulic conductivity; Grain size; Pumping test; Empirical methods

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