Hydrogeological Characterization and Determination of Aquifer Hydraulic Properties Using Pumping Test at the College of Petroleum Resources and Energy Studies, Kaduna, Nigeria

The purpose of this study is to determine hydraulic properties of groundwater in college of petroleum and energy studies within Kaduna metropolis of North-western Nigeria using pumping test. Single well pumping tests were conducted for a period of 45 minutes to 5 hours at constant rate using 20 boreholes located in the study area to determine the aquifer parameters. The data obtained during pumping test sessions which lasted for a period of 20 to 120 minutes include; the static water level which varied from 3.8 to 9.0 m, the total depth of the existing boreholes vary from 14.9 to 66.3 m and the maximum drawdown observed was between 6.2 to 46.57 m. The obtained data were used to compute the hydraulic properties using the Cooper Jacob method. The results indicated that the yield capacity varied between 26.78 to 88.13 m3 /day with an average of 45.56 m3 /day, specific capacity values range from 0.934 - 7.956 m2 /day with an average of 3.152 m2 /day, aquifer transmissivity values varied from 0.494 to 4.982 m2 /day with an average of 1.747 m2 /day while hydraulic conductivity values varied from 0.016 to 0.255 m/day, with an average of 0.074 m/day. Transmissivity-based classification reveals a very low to low yield aquifer. According to the transmissivity and hydraulic coefficient, low horse power home pump size boreholes should be placed in the area for sustainable aquifer productivity. A strong correlation (correlation coefficient, R2 ) of 0.8305 was obtained between transmissivity and specific capacity. The outcome thus points to a fair water-bearing unit that is able to supply a respectable volume of water for domestic needs. The findings of the research might provide baseline data for the study area's groundwater development and utilization.