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 | | Bars tend to be long and narrow (linear) and develop where a current (or waves) promote deposition of particles, resulting in localized shallowing (shoaling) of the water. |
 | | The term bar can apply to landform features over a considerable range in size, from just a few meters in a small stream to marine depositions stretching for hundreds of kilometres along a coastline (see barrier islands). |
 | | In a nautical sense, a bar is a shoal, similar to a reef: a shallow formation of (usually) sand that is a grounding hazard. |
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