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16 October 2014

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Script

Key Points

This is the Lower Bann running between Kilrea and Coleraine. This is the second stage or middle course of the river. The land on either side of the river is called the flood plain. Flood plains are often used for farming as the land is flat and has a rich fertile soil. As we move downstream you can see flooding of the fields along each side of the river.

Further downstream the Bann is joined on its left bank by the Agivey River. This is a confluence, the name given to a place where two rivers join. Here the channel widens to hold the extra water. As the river gets bigger it can transport more material downstream. In times of flooding, the river will erode the banks but when the flow is lower it will deposit material and sandbanks may form in the river.

This is the final stage of the Lower Bann where it reaches the sea. The area is called the Barmouth. This is the lower course of the river. Here the river is very wide and deep and flows more slowly where the land is flatter. As the river reaches the sea it is not able to carry as much material and will deposit the material in the channel.

This river is used by ships to reach Coleraine so it is dredged to keep the channel clear for shipping. The two piers at the mouth of the river are man made and they help guide ships into the river mouth.

Flood plains are found in the middle and lower stages of a river. This area is often used for farming as the land is flat and fertile.

A river confluence is the place where two rivers join.

The lower stage of a river is very wide and deep and flows slowly. The river is not able to carry as much material and will deposit the material in the channel.



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