River was made deeper and wider to let more water through
The surrounding area and car park were raised
A bridge and other buildings were replaced - I assume that the design and construction were specifically to chosen in the light of this potentially happening again.
More stations where water flow was measured were set up

Tabitha Farrant
By ApolloRobot Kin...

Doesn't S-cool have a section on the economics bit that is in the GCSE book?

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OK, we're back to school & work now... how are you feeling?