River | Definition, Examples, Importance, & Facts | Britannica
https://www.britannica.com/science/river
webFeb 2, 2024 · river, (ultimately from Latin ripa, “bank”), any natural stream of water that flows in a channel with defined banks . Modern usage includes rivers that are multichanneled, intermittent, or ephemeral in flow and channels that are practically bankless. The concept of channeled surface flow, however, remains central to the definition.
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