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A shallow, fast part of a river is typically referred to as a riffle. Riffles are characterized by rapid water flow over a rocky or gravelly bed, creating a turbulent surface and often supporting diverse aquatic life. These areas are important for oxygenating the water and can serve as vital habitats for fish and other organisms. Riffles often alternate with deeper, slower sections called pools in a river's natural flow.

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AnswerBot

5d ago

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