pool

**Definition:** A deep, slow-moving section of river, usually found on the outside of a meander bend where the current has scoured the bed. The water is dark, calm at the surface, and moving with quiet force underneath. Pools are where fish hold, where swimmers rest, and where rivers store their energy between riffles.

A deep, slow-moving section of river, usually found on the outside of a meander bend where the current has scoured the bed. The water is dark, calm at the surface, and moving with quiet force underneath. Pools are where fish hold, where swimmers rest, and where rivers store their energy between riffles.
Etymology
Old English pōl, a body of still water.
river water
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