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 valleys in high mountains or polar areas. At ...

Valley longitudinal profiles The longitudinal profile of a valley is the gradient throughout its length. Valleys formed by river action typically have a concave upward profile, steep in the headwaters and gentle in the lower reaches. The lower end of such a profile is adjusted to an effective lower limit of erosion defined by the baselevel.

The meaning of VALLEY is an elongated depression of the earth's surface usually between ranges of hills or mountains. How to use valley in a sentence.

A valley is defined as a depression found on the Earth's surface, usually situated between higher elevations such as mountains or hills. The processes leading to its formation are geological in nature and occur over long periods of time. Many people wonder what a valley is and how it is formed.

Common Valley Shapes The dominant force of formation largely dictates a valley’s characteristic shape. Two recognizable types are V-shaped and U-shaped valleys, each reflecting their erosional agent. Rift valleys, a distinct type, arise from tectonic forces. V-shaped valleys are formed by the erosional action of rivers.