The result of the investigation revealed that Edjekota has five to six layers with AAK, KHAA, AKHA and KQHA type curves indicating near homogeneous terrain. However, the study delineates six geolectric layers.
The first
subsurface layer (top soil) consists mainly of loose sand with thickness of 0.5 m to 1.4 m. The second layer is
mainly clay and clayey sand to a depth of about 8 m. The existence of some shallow wells within the community is
traceable to this delineated thick clay layer. The third layer consists of clayey sand and sandy clay and shale
formations to a depth of 18 m. This layer is diagnostic of brackish water which is not suitable for groundwater
development. The fourth subsurface layer consists of fine grain sand embedded in water (False aquifer) to about 22
m. The sand deposit delineated Edjekota is large and of commercial value. The fifth layer consists of medium to
coarse grain sand to a depth of about 30 m. This is the second aquifer but not too encouraging for prospect for
groundwater exploration in the area. The sixth subsurface layer consists of coarse grain sand and gravelly stones
from 30 m to far depth with appreciable loose sand deposits beneath [13]. The aquifer performance is best at about
45 m. It is therefore recommended that boreholes for sustainable water supply in Edejekota boreholes should be
drilled to about 45 m to hit prolific aquifer. It is also recommended that other geophysical exploration methods such
as seismic refraction method may be employed to further investigate this area for economic purposes.