Many years ago a friend and I were introduced to dowsing by one of our university lecturers, who had invited us to his house for a meal. He asked us both - independently and without witnessing each other - to walk across his lawn holding wire dowsing rods. He didn't give us any further instructions, nor did he mention trying to find water or anything else. We were simply asked to see what, if anything, might happen. So as not to influence us in any way he retired behind a window where he could watch us but we couldn't see him.
I found that at certain places my dowsing rods crossed quite forcefully, as if by themselves, and they crossed at the same places whenever I walked across the lawn. I noticed that even when I squeezed the rod handles the rods still moved, apparently against resistence. My friend's dowsing rods reacted at exactly the same places, but what most surprised her was that hers didn't cross but moved apart instead, something she hadn't expected (she later discovered that dowsing rods always moved apart for her and never crossed). Our host didn't seem at all surprised by any of this and explained that the places where the rods moved were over the known location of drains. We had no proof of that but there was no obvious reason to doubt him. Whether or not the movement of the rods had anything to do with water it was certainly curious that they moved for both of us at identical spots.
The recent media attention on dowsing rekindled these memories and I decided yesterday to make myself a pair of rods out of fencing wire and try to find our outside stop tap, which has become lost in undergrowth. Sadly, I have to report that it is still lost!