Abstract
The aim of this study was to determine the aquifer parameters in Erho, Nigeria. This was carried out b y drilling three test wells and three observation wel ls in the study location. Water was pumped from the test wells at a constant rate while the drawdown in the observation wells was determined as a function of t ime. The data obtained were subjected to graphical and a nalytical evaluation using the Cooper-Jacob method. The result revealed that the mean values of the tra nsmissivity, storage coefficient and specific capac ity of the aquifer layer are 6.15 ×10 -2 m 2 /min, 9.3 ×10 -4 and 0.33 m 2 /min respectively. Analysis of the results indicated that the aquifer will be very productive and able to supply sufficient quantity of water for the people. The result also revealed that the aquifer i s confined and therefore dependable to provide good quality water for the people living in the area.
Highlights
2009; Yang and Lee, 2002; Onu, 2003; Nejad, 2009; Majumdar and Das, 2011), to determine either the Groundwater is described as that water which is hydraulic conductivity, transmissivity or the specific obtained from the unconsolidated soil or rock formations yield of the groundwater aquifer
The plot of the water level in the observation well versus the time since pumping commenced in the test well is presented as Fig. 2a, while the plot of the drawdown versus the time of pumping is presented as Fig. 2b
These parameters were substituted into the Cooper-Jacob equations to compute the aquifer storage coefficient, transmissivity and specific capacity
Summary
2009; Yang and Lee, 2002; Onu, 2003; Nejad, 2009; Majumdar and Das, 2011), to determine either the Groundwater is described as that water which is hydraulic conductivity, transmissivity or the specific obtained from the unconsolidated soil or rock formations yield of the groundwater aquifer. The pumping of water from an Okiongbo and Akpofure (2012), stated that the use of aquifer through a well over a long period of time, results pumping test and well logging in evaluating aquifer in the drop of the water level in that aquifer This drop in parameters requires a number of equipment to carry them water level causes the water around the well to flow out. Used the pumping test and logging methods to evaluate These procedures include electrical resistivity aquifer parameters include The hydraulic conductivity of an aquifer is described as the pace at which the water flows in the aquifer It is measured in metre cube per day (Anomohanran, 2014b)
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