I had burnt my finger by digging an empty well and spending my hard-earned money in vain. I then started to study about the resistivity method for finding underground details. But I have many doubts arised now.
What is the resistivity of ground water in ohm-m. How to find the exact depth at which the water is starting. Is there any good tutorial to learn more of geophysics. Is there any good open source software to map the underground water and tutorial for it.
Edit: Thanks for the response, iam from southern part of India. My city is called as Chennai. We have Wells nearby.