The Forked Rod, from Mining to the Modern Water Witch

Dowsing has a long working history that predates any claim about extrasensory perception. European miners were already using a forked hazel or willow rod to locate ore veins by the sixteenth century, and the English word "dowsing" is tied etymologically to that Cornish and German mining tradition rather than to any single inventor or theorist. The practice was adapted to finding underground water, "water witching," and spread through rural communities across Europe and North America as a practical, if scientifically unexplained, well-digging technique, sometimes performed with a forked stick and sometimes with a pair of bent metal rods held loosely and said to cross or swing when the dowser passes over a target.

Because dowsers themselves have historically framed the practice as a craft skill rather than an occult power, and because successful well placement is easy to claim credit for in regions where groundwater is widespread, dowsing occupied an ambiguous position for centuries between folk practical knowledge and pseudoscience. It entered the parapsychological literature specifically because some practitioners and researchers claimed the rod or pendulum was detecting a genuine subtle emanation from water, minerals, or even missing persons and buried objects, a claim that moves dowsing from the domain of craft skill into a testable psi hypothesis.