Data Acquisation and Interpretation of Hydrogeological Survey in Parts of MALETE, Southwestern Nigeria

Abstract

This study was carried out to acquire hydro-geophysical data and provide detailed interpretation of the data in parts of Malete, Moro local government, Kwara State, Nigeria. The geographical coordinates of the study area are longitude 8˚ 42’ 0” East and Latitude 4˚ 28’ 0” North. A total of 16 Vertical Electrical Soundings were carried/ estimated out across three profiles using the Schlumberger electrode array configuration, with current electrode separation (AB/2) varying from 1m to 80 m. The data obtained were subjected to interpretation by partial curve matching and then by computer iteration. The interpretation of the VES data also assisted in the characterization of three to four geo-electric layers from which the aquifer unit was delineated. The layers are divided into Topsoil, Laterites, weathered basement and Fresh bed rock. The weathered and fractured basements are the aquifer unit delineated across the area. The thickness of the weathered basement unit varies from 10.1m to 38.3m in the area.