The Willamette River in Oregon is a busy shipping channel. Near the mouth of the Willamette, the river is regularly dredged to keep it at least 12 meters (40 feet) deep, allowing heavy cargo ships to navigate it.

Photograph by Terry Bridges, MyShot
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river Encyclopedic Entry

Best For
5 - 12 and up

Geography, Science

Appropriate For

  • Educators
  • Families
  • Students

A river is a large, natural stream of flowing water. Rivers are found on every continent and on nearly every kind of land.