Study Figure 3 which is a hydrograph showing the changing discharge of the River Thames at Kingston during a major flood event.
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Figure 3
Identify which one of the following is the best description of this flood event.
A | Discharge exceeded 500 cumecs for over 20 days. |
B | Peak discharge was 1000 cumecs higher than discharge on Day 1. |
C | Peak discharge was over 20 times higher than discharge on Day 1. |
D | Discharge was highest on Day 58. |
Explain one reason why high discharge is likely to increase erosion.
Explain two ways in which human activities can affect storm hydrographs.
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