[Sage]

I never said it was "supernatural", merely not fully understood at the present time.
In fairness, the dowser I spoke to had been working in Blount County, Alabama for more than forty years. The site he dowsed already had one well nearby, but the water in that particular well was not potable due to excessive mineral content (iron and calcium, both very common in this area), therefore we were looking for a second, separate water source on the site with an eye towards building a house there.