Baymouth bar

From Wikipedia, the free encyclopedia
Jump to: navigation, search

A baymouth bar is a depositional feature as a result of longshore drift. It is a spit that completely closes access to a bay, thus sealing it off from the main body of water. It is different from a barrier island separating a lagoon because it closes the bay off completely, not partially.

These bars usually consist of accumulated gravel and sand carried by the current of longshore drift and deposited at a less turbulent part of the current. Thus, they most commonly occur across artificial bay and river entrances due to the loss of kinetic energy in the current after wave refraction.

Sand Bypass Systems[edit]