Study Fig. 5A, which shows the cross-section of a river and its valley at three different locations along the river.

1. (a)If the river was to rise above the top of the bank at each location, which would have the largest area of flooding? Give a reason for your answer.[2]
2. (b)(i)What is the height of the river at B?[1]
3. (b)(ii)Describe the shape of the valley at B.[3]
4. (c)Fig. 5B is a map of location C. The line of the cross-section is shown. On Fig. 5B sketch a suggested position for the 20m contour on either side of the valley.[1]
5. (d)Put the locations A, B and C in order from the source to the mouth of the river. Source ........................................................................................................ Mouth[1]

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