Bar (river morphology)

（重定向自Gravel bar）

Point bar at a river meander: the Cirque de la Madeleine in the Gorges de l'Ardèche, France.

Gravel bar in the American River, Washington, USA.

A bar in a river is an elevated region of sediment (such as sand or gravel) that has been deposited by the flow. Types of bars include mid-channel bars (also called braid bars, and common in braided rivers), point bars (common in meandering rivers), and mouth bars (common in river deltas). Bars are typically found in the slowest moving, shallowest parts of rivers and streams, and are often parallel to the shore and occupy the area farthest from the thalweg.

单词	Gravel bar
释义	Gravel bar 原声例句 TED演讲（视频版） 2020年8月合集 The tiny gravel bar where we first landed our helicopter was gone. 我们第一次降落直升机的小砾石坝不见了。英语百科 Bar (river morphology) （重定向自Gravel bar） A bar in a river is an elevated region of sediment (such as sand or gravel) that has been deposited by the flow. Types of bars include mid-channel bars (also called braid bars, and common in braided rivers), point bars (common in meandering rivers), and mouth bars (common in river deltas). Bars are typically found in the slowest moving, shallowest parts of rivers and streams, and are often parallel to the shore and occupy the area farthest from the thalweg.
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