Geophysical and hydrogeological evaluation of rising groundwater level in the coastal areas of Lagos, Nigeria
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Date
2009
Authors
Oyedele, K.F
Ayolabi, E.A
Adeoti, L
Adegbola, R.B
Journal Title
Journal ISSN
Volume Title
Publisher
Bulletin of engineering geology and the environment
Abstract
The paper reports the change in groundwater
level observed in 30 wells in ten locations in southern
Nigeria. Borehole data confirmed the electrical resistivity
soundings which indicated the presence of topsoil, medium
sand, sand, clayey sand and coarse sand. In some cases,
there was little apparent change in the rate of groundwater
rise, but from the data obtained it can be concluded that in
the years 2000–2004 the average yearly rise was 0.3 m
while between 2004 and 2007 it rose on average by 0.5 m.
This rise in groundwater level has serious implications for
both existing structures and the nature of the foundations
for future building. The electrical resistivity survey was
found to be a helpful tool in detailing the morphology of
the groundwater surface and is recommended for ongoing
monitoring.
Description
Keywords
Electrical soundings , Geoelectric sections , Coastal aquifers , Groundwater level
Citation
Oyedele, K. F., Ayolabi, E. A., Adeoti, L., & Adegbola, R. B. (2009). Geophysical and hydrogeological evaluation of rising groundwater level in the coastal areas of Lagos, Nigeria. Bulletin of engineering geology and the environment, 68(1), 137-143.