Combined application of electrical resistivity and shallow groundwater sampling to assess salinity in a shallow coastal aquifer in Benin, West Africa

The distribution of salinity along coastal Benin, West Africa, was assessed.ERT, VES, and direct-push sampling identified the spatial distribution of salinity.The combination of techniques provided insight into distribution of salinity.The coastal region is subject to complex hydrogeologic conditions.The coast is not currently a threat to the Cotonou, Benin water supply.