See also: river-bed and river bed

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From river +‎ bed. Compare Dutch rivierbedding (riverbed), German Flussbett (riverbed), Swedish flodbädd (riverbed).

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riverbed (plural riverbeds)

  1. (hydrology) The path where a river runs, or where a river once ran; the bottom earthen part of a river, not including the riverbanks.
    • 2021 September 8, “Network News: West Coast Main Line viaducts reinforced by underwater concrete”, in RAIL, number 939, page 10:
      Detailed laser surveys carried out by Network Rail revealed that fast-flowing water on the River Eden has caused parts of the riverbed to wash away, posing a risk to the viaduct foundations.

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