Abstract
Groundwater is a major source of water supply throughout the world. Its dependence is at the increase, so is highly necessary to ensure that there is a significant supply of potable water with high quality. On the verge of seeing these problems, we investigated shallow aquifer in Rumuohia community in Emohua local government area, Rivers State, Nigeria which aimed at utilizing seismic refraction method to delineate depth to shallow aquifer and geological structure of the terrain at five selected locations. The analysis of the result shows two layers with the presence of sand-gravel and clay lithologies. Layer 1 in all five locations is made up of clay with an average velocity of 274.83m/s with a thickness range of 4.88m to 9.98m at an average of 7m. Layer 2 in two locations is made up of sandy clay. In one location, it is clay while in the remaining two locations they are sand with gravel (dry), which infers a potential aquifer with an average velocity of 422.63m/s. The sand being present indicates a good aquifer, and clay serves as a stopper for the sand since it tends to go through compaction by overburden pressure. The study area is generally a good site for a borehole with a high tendency for potable water supply.
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