River

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Etymology

Middle English rivere, from Anglo-French, from Vulgar Latin *riparia, from Latin, feminine of riparius riparian, from ripa bank, shore; perhaps akin to Greek ereipein to tear down

Definitions

b : watercourse
  • 2 a : something resembling a river <a river of lava>
b plural : large or overwhelming quantities <drank rivers of coffee>

Description

A river is a natural watercourse, usually freshwater, flowing toward an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including stream, creek, brook, rivulet, and rill; there is no general rule that defines what can be called a river. An exception to this is the stream. In some countries or communities a stream may be defined by its size. Many names for small rivers are specific to geographic location; one example is Burn in Scotland and North-east England. Sometimes a river is said to be larger than a creek, but this is not always the case, because of vagueness in the language.

A river is part of the hydrological cycle. Water within a river is generally collected from precipitation through surface runoff, groundwater recharge, springs, and the release of stored water in natural ice and snowpacks (e.g., from glaciers).[1]