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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.
This clip is from:
First broadcast:
25 January 2002

Classroom Ideas

Children can watch the clip and then research a river of their choice. They could create a 3D river and label its features or they could draw a 2D river and label its features. They should also explain what transportation, deposition and erosion are.

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