Abstract

Ogume in Delta State is a town of great geophysical interest because its formation strata are entirely different from those of the neighbouring towns and communities. It has formations of high economic and structural importance hence, it is now known as the “treasure land” of Delta state. It is therefore important that a geophysical study be made in Ogume to ascertain its formation strata, estimate their layer thicknesses and spread in relation to economic and structural viability and determine its existing groundwater distribution. Hence, ten randomly selected sites in Ogume were sounded using with a highly sensitive Terrameter SAS 1000 and applying Schlumberger array.  The data obtained were analyzed and interpreted by curve matching and computer iteration techniques. The results show that formations in Ogume are predominantly AK and A curve types and that it possesses fine grain top soil underlain by sandy clay formation to a depth of about 6 m. This is followed by a very thick layer of commercially viable silt deposits to a depth of about 17 m. Static water level is at 18 m while viable aquifer is within 25 m and around the Ogbeagu Grammar School.

Key words: Geophysical, formation, groundwater, terrameter, Ogume, Delta.