Investigation of water table depths in some selected areas of IMO State, Nigeria
Obi Lawrence E
Water from borehole has become an inevitable alternative for water supply in cities and communities of Imo State, Nigeria. This is caused by the dilapidation and the moribund condition of government owned treatment plant and the extinction of most rivers and streams within the state. The researcher used empirical method predicated on the geophysical survey conducted on the sample study areas of Orodo Mbaitolu, Egwuedu Njaba, Umusasa Orlu, Umudiato Orlu, Ehime Mbano and Nekede Owerri. The appropriate instrument of vertical electrical sounding was used to establish the lithological units of the areas and the total drilling depths of the boreholes. With the information from the lithologic units and total drilling depths, the various water table depths for these areas were established. The recommended water tables depths for Orodo Mbaitolu, Egwuedu Njaba, Umusasa Orlu, Umudiato Orlu, Ehime Mbano and Nekede Owerri, were 102m, 150m, 48m, 45m, 75m and 105m, respectively.