• How particles are moved by flowing water depends on their size.
  • Larger sediments are dropped in steep areas, but smaller sediments can still be carried.
  • The size of particles that can be carried is determined by the stream’s velocity.
  • Particles that are too large to be suspended move along the stream bed by saltation.
  • If a river floods often, the floodplain develops a thick layer of rich soil because of all the deposits.
  • This is why floodplains are usually good places for growing plants.
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