The Mines and Geosciences Bureau XI conducted the georesistivity survey at the municipality of Tarragona as part of the Groundwater Resource Assessment of the Province of Davao Oriental. The georesistivity survey is a method of introducing electric current to the ground to analyze the subsurface lithology leading to the determination of potential aquifers for groundwater extraction.  All municipalities of Davao Oriental were already covered by the said activity and all the municipalities of the Davao del Norte will be the next target for the 3rdand 4th quarter.