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How is the Amur River divided into upper middle and lower sections?

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The Amur River is traditionally divided into three distinct sections based on its geography and flow:1

  • Upper Amur: This section begins at the confluence of the Shilka and Argun rivers and extends approximately 560 miles (900 km) downstream to the mouth of the Zeya River at Blagoveshchensk.1
  • Middle Amur: This segment spans about 600 miles (970 km), stretching from the Zeya River eastward to the city of Khabarovsk.1
  • Lower Amur: This final section also measures approximately 600 miles (970 km), running from Khabarovsk to the river's mouth at the sea.1