Dictionary.com
Thesaurus.com

waterfinder

American  
[waw-ter-fahyn-der, wot-er-] / ˈwɔ tərˌfaɪn dər, ˈwɒt ər- /

noun

  1. a dowser; water witch.


Etymology

Origin of waterfinder

An Americanism dating back to 1880–85; water + finder