2D resistivity is carried out to detect spread saturated zone and subsurface problems cause by the presence of
underground river, which resulted from selected urban area at Selangor, Malaysia. Six 2D resistivity survey lines with
minimum 5 m electrode spacing were executed using Pole-dipole array.Borehole was carried out at multiple locations in
the study area. Subsequently, the borehole was used to verify the 2D resistivity results.