As I write, great chunks of the dam above Whaley Bridge in Derbyshire have collapsed and 6500 residents have been told to evacuate their homes. The damage was caused by the recent very heavy rains. If the dam gives way it could inundate homes.
For those residents who get back to their homes (eventually) it will be very worrying unless the dam is completely rebuilt to modern safety standards.
See https://www.bbc.co.uk/news/uk-england-derbyshire-49189955