sand bar

noun

1. a ridge of sand in a river or sea, built up by the action of tides, currents, etc, and often exposed at low tide

Example Sentences

A previous ANU study found waves off the town of Mundaka in northern Spain vanished because of changes to a sand bar after dredging in a nearby river.

From BBC

A few sand bars had become visible, and dry rocks showed that had previously been under water.

From Literature

At one point the overloaded boat appeared to be beached on a sand bar by the retreating tide but then it moved further out to sea.

From BBC

Asphalt could be seen on every river island visited, ranging from globs stuck on riverside vegetation to thick mats of tar oozing across sand bars as summer temperatures heated it into a viscous liquid.

From Seattle Times

"I think they were just swirling on top of the sand bars and it's one of those phenomenon where you just happen to be there at the same time."

From BBC