How can I identify groundwater points scientifically to drill a borewell in Salem, Tamil Nadu

How can I identify groundwater points/location for drilling borewell; as well the approximate depth in Salem rural attur area. Water diviners use sticks, copper ring, coconut etc., to identify the source, which of these is reliable and believable.

Is there a scientific way like hydro-geology or satellite mapping available in Tamilnadu  In our case they used sticks and we did not get water at both points shown by 2 water diviners. We drilled 450 feet and 600 feet respectively and failed at both points. They had promised water availability of about 3000 gallons at 400 feet and 500 feet respectively. So can someone provide an answer this question and help save cost of borewell drilling at wrong places/points.