Groundwater Investigation by Using Resistivity Survey in Peshawar, Pakistan

Abstract

Resistivity survey was conducted in Peshawar to investigate groundwater using Terrameter SAS 4000. Six sites were selected for the studies through feasibility survey to identify feasible points for conducting survey. Data collected was analyzed using 1X1D software which uses principal of conventional theory of curve matching. Resistivity values were compared with standard table of resistivity values of geological formations through which depths to water table was estimated, which were compared to the existing surrounding wells. These local results showed that shallow depths estimated for groundwater table were at Pakistan Forest Institute as saturated sand and gravel, for an average depth to water table of 23 m with respect to ground surface. In University Campus/Professor Colony, Biotechnology, Hayatabad Township site 1, and Site 2 the local groundwater level mostly in sand and gravel materials were at depths of 41 m, 37 m, 92 m and 82 m for different resistivity values. Study concludes that Instead of natural surface flow and seepage, there should be storage in the permeable zone or open dug wells within the planned storages for artificial recharge. Furthermore use of geophysical tools for groundwater investigation provides easy and quick approach as compared to conventional methods of groundwater investigations.

Keywords: Groundwater. Resistivity survey. Terrameter SAS 4000. 1X1D software. Geophysical tools. Georefrencing.