You always have to wonder if they had drilled 100 ft in any direction if they would have hit water anyway.
The National Ground Water Association strongly opposes the use of water witches to locate groundwater on the grounds that controlled experimental evidence clearly indicates that the technique is totally without scientific merit. The Association recommends the use of proven hydrogeological and geophysical techniques for groundwater reconnaissance when its presence is not easily recognizable by drilling contractors.
You get a good 'witcher' and they can not only FIND water but tell you how deep and what volume,
Just because one doesn't know about something - doesn't mean it doesn't work.
Dousing is nothing new in GA and the Carolina’s. Up in the mountains most of the water is found via dousing. They are hardly ever wrong. In the old days they just used willow sticks for rods.