The present study is aim to find out the a beach groundwater induced due to the Wave and Tidal impact in Van island, Gulf of Mannar, Tamilnadu. The Island is located near the away from 5km from Thoothukudi down of NE direction. The study area was studied using 2D ERI (Electrical Resistivity Imaging) study for wave and tidal impact in the Van Island. The electrical method five profiles were used to monitoring the water induced area were observed in the Island. The lithostratigraphical sequence map was prepared from 2D ERI technique. The studies were carried out using resistivity meter, cable, electrodes and Res2DINVsoftware. The electrical method, we find out the geological formation of the study area such as beach sand with shell material and limestone, calcareous sandstone were identified in the Island. The high wave and low tidal activity is creating the clay deposits are enriched in the surrounding region of Island. The following study used to compare the coastal upliftment in neotectonic activity in the gulf of mannar coast were computed with the Island and coastal terrace formation.
