rhabdomancy

Divination by means of a wand or rod, especially for discovering underground water or ores.

Divination by a rod or wand; specifically, the attempt to discover things concealed in the earth, as ores, metals, or springs of water, by a divining-rod; bletonism; dousing.

Same as rabdomancy.

Divination with a wand or rod; dowsing.

Searching for underground water or minerals by using a dowsing rod.