I work in the water distribution business and on occasion I am forced to try and find a water main with my witching rods, which I can say for sure that I dont think I have found one yet. I have to use a 4 or 6' probe rod and actually punch through the earth and touch the main to locate it, If the ground has alot of rock or is rock hard, I at last resort try to witch it, then if I get them to crossing I start probing for it in the area, I cant remember ever actually getting it right, most of the time if I cant fine it I start at one end of the easement and punch hole in the ground spaced half the width of the pipe I am looking for until I find it. But I can always witch it if I know where or can see the orginal ditch line is...Go figure?
