bay-head bar

A bay-head bar is a geological formation consisting of a sand or gravel bank deposited near the head of a bay. This deposition often results in a narrow opening that allows for the outflow of the bay's water.1

These bars are influenced by coastal processes, including waves and longshore currents, which are generated by waves approaching the shore at an angle. These currents transport sediment along the coastline. Sandbars, in general, are ridges of sand or coarse sediment built by waves offshore from a beach. They can be submerged or partly exposed, with their tops typically kept below the still-water level by breaking waves. Bay-head bars are a specific type of sandbar found at the heads of bays.23