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A valley is an elongated low area often running between hills or mountains and typically containing a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in ...
Tunnel valley – Glacial-formed geographic feature; Turlough – Type of seasonal or periodic lake found in limestone areas of Ireland; Tuya – Flat-topped, steep-sided volcano formed when lava erupts through a thick glacier or ice sheet; U-shaped valley – Valleys formed by glacial scouring; Uvala – Toponym for a closed karst depression
Coulee – Type of valley or drainage zone; Couloir – Steep, narrow mountain gully – a narrow gully with a steep gradient in a mountainous terrain; Dale (landform) – Open valley; Draw (terrain) – Terrain feature formed by two parallel ridges or spurs with low ground in between; Gulch – Deep V-shaped valley formed by erosion
Meandering rivers, which form a sinuous path in a usually low-gradient plain toward the end of a fluvial system. Anastomosed river is a rare case of a relatively straight, complicated vertical sequence of river deposits with banks held together by dense vegetation .
River valleys formed by erosional downcutting of rivers create V-shaped valleys, while glaciers carve out U-shaped valleys. The Channeled Scablands have a rectangular cross section, with flat plateaus and steep canyon sides, and are spread over immense areas of eastern Washington. The morphology of the scablands is butte-and-basin. [9]
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A gulch is a deep V-shaped valley formed by erosion. It may contain a small stream or dry creek bed and is usually larger in size than a gully. [1] Sudden intense rainfall upstream may produce flash floods in the bed of the gulch. Witches Gulch found in the Dells of the Wisconsin River. In eastern Canada, gulch refers to: [2]
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