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CLIP 7930

How is a river formed - streams, tributaries and confluences

How is a river formed - streams,  tributaries and confluences

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Key Info
  • How is a river formed - streams, tributaries and confluences
  • Duration: 02:04
  • The different stages of a river, and how rainfall in the Mourne Mountains in Northern Ireland travels to Belfast. A river has three stages: upper, middle and lower. Rain falling in highland areas flows downwards to form a stream. This then travels downhill joining other streams. The point at which all the tributaries join the river is called a confluence. Steep sided mountains and heavy rains make the Mourne Mountains an ideal place to store rainfall. Water from this catchment area supplies greater Belfast, which is thirty miles to the north.
  • Subject:




  • Keywords: waterway, silt, meander, rivers, meandering, water, confluence, reservoirs, Northern Ireland, Mountains of Mourne, Belfast, rainfall
Ideas for use in class
  • This is the first clip in a series of three that will cover the formation and journey of a river, from when the first streams are formed by rainfall. This section could be used to illustrate the start of the land-based part of the water cycle.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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