UKPONG, E. C and ABARAOGU, Civil Engineering Department, Faculty of Engineering University of Uyo, Akwa Ibom State, Nigeria.
UDECHUKWU JOHN Civil Engineering Department, Faculty of Engineering University of Uyo, Akwa Ibom State, Nigeria.
The description and location of geologic formations and water-bearing zones within the study area are discussed. The geologic aquifer in the area are the upper, medium and lower sands. Pumping test and soil sample data were obtained from Ifa Atai, State Secretariat and Ewet Housing Estate all in Uyo metropolis were analysed. The analysis reveals the following Aquifer and well characteristics, permeability (3.74-20.952) m/d, transmissivity (146.13-914.63) m2/d, storativity (0.141-0.181), specific capacity (4.26-28.69) m3/h/m, well efficiency (77.31-95.03%), expected drawdown (4.36-29.34)m. The result shows that the geologic formation have good water-bearing formations with medium sand being predominant. Draw down values after prolonged pumping test are indicative of high well productivity. Generally the aquifers in the study area are permeable and of high storage capacity.
Keywords: Pumping test, soil sample data, geologic formations, aquifer, permeability, and specific capacity.