Divination or fortune-telling by means of the motions or appearance of water: Hydromancy includes the color, ebb and flow, or ripples of water.

Hydromancy is prophecy by means of any liquids by having a small boy tell what he has seen in the liquid or water.

Hydromancy consists of interpreting the color and patterns of flowing water. Sometimes ripples are studied as stones are dropped into a quiet pool of water.